Article
Nanoscience & Nanotechnology
Tao Liu, Haitao Jiang, Hui Sun, Yujie Wang, Qing Dong, Jianrong Zeng, Fenggang Bian, Jiao Zhang, Fei Chen, Baode Sun
Summary: The effects of different hot rolling reductions on the precipitation behavior and mechanical properties of AA7050 alloy were investigated. The results showed that with increasing hot rolling reduction, the recrystallized structure became more refined, and the morphology and volume fraction of nanoprecipitates changed. The alloy with 80% hot rolling reduction exhibited the highest strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Mengchu Yang, Shengdan Liu, Yong Zhang, Jianguo Tang, Mengchao Zhang
Summary: The mechanism of precipitation strengthening in copper-containing aluminum alloys was investigated using various techniques. It was found that the addition of copper increased the strength of the alloys, primarily due to the contribution of clusters in the precipitation strengthening.
MATERIALS & DESIGN
(2023)
Article
Metallurgy & Metallurgical Engineering
Tao Liu, Guang-min Hu, Yu-jie Wang, Jian-rong Zeng, Qing Dong, Feng-gang Bian, Zhao-peng Cao, Nan Meng, Jiao Zhang, Bao-de Sun
Summary: This study investigates the precipitation strengthening behavior and its effect on the mechanical properties of Al-Mg-Si alloy during isothermal aging. The results show that the growth of nanoprecipitates in size and volume fraction is quantitatively related to precipitation strengthening. The use of in-situ synchrotron small angle X-ray scattering (SAXS) technique provides more accurate parameters for predictive models.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Multidisciplinary
Joseph Robson, Peter Jessner, Mark Taylor, Ziyu Ma
Summary: The effect of warm stretching on precipitation in AA7075 alloy was investigated. It was found that deformation can strongly influence the evolution of precipitates, with higher strain resulting in faster growth rate.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Alok Singh, Takanobu Hiroto, Machiko Ode, Hiroyuki Takakura, Karel Tesar, Hidetoshi Somekawa, Toru Hara
Summary: The precipitation of a stable quasicrystalline i-phase has been observed in a Mg-6Zn-3Al magnesium alloy, which may be the first discovery of a stable i-phase in this alloy. The dissolution of i-phase at grain boundaries leads to precipitation in the Mg-matrix during cooling. Nucleation characteristics, phase transformation, and interface morphology were investigated.
Article
Nanoscience & Nanotechnology
Sang-Hwa Lee, Jae-Gil Jung, Sung-Il Baik, David N. Seidman, Min-Seok Kim, Young-Kook Lee, Kwangjun Euh
Summary: The research revealed that the formation and evolution of GPI and GPII zones during natural aging had a significant impact on the mechanical properties of the Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti alloy. The Zn/Mg atomic ratio, mean radius, number density, and volume fraction of the GP zones also played crucial roles in influencing the mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
D. Zhang, H. C. Jiang, Z. J. Cui, D. S. Yan, Y. Y. Song, L. J. Rong
Summary: The precipitation kinetics in an Al-Zn-Mg alloy is significantly altered by applying tensile/compressive external stress during artificial aging, leading to higher number density of precipitates and peak hardness. Tensile stress delays coarsening of precipitates, hence delaying peak aging and over-aging, while compressive stress accelerates atom diffusion but slightly slows down over-aging due to competitive growth among high-density precipitates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Ruixuan Li, Zheng Ren, Yuan Wu, Zhanbing He, Peter K. Liaw, Jingli Ren, Yong Zhang
Summary: Designing a quinary alloy based on the concept of high-entropy alloys enables the achievement of high strength and deformability at high zinc content levels in Al-based alloys. The precipitation transformation plays a key role in contributing to the desired mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Yunhe Zheng, Laure Bourgeois, Jian-Feng Nie
Summary: This study investigated the structure of precipitates in Mg-Zn-Al alloys, revealing new structural features and proposing that the rod-shaped precipitates can be described by tiling of different shapes.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Tsai-Fu Chung, Ching-Wen Yeh, Yow-Shiuan Liaw, Jia-Rui Lin, Ping-Luen Ho, Chien-Nan Hsiao, Cheng-Si Tsao, Che-Min Chou, Yo-Lun Yang, Jer-Ren Yang, Chih-Yuan Chen, Wayne Hong
Summary: A study was conducted on the deformation behavior during upsetting-extrusion process in Al-8.9Zn-2.2Mg-2.1Cu-0.14Zr-0.02Sc alloys at 350 degrees C, under different ageing conditions (as-received, T4, and T6 ageing). The results showed that increasing UE strain enhanced the formation of dynamic recrystallization grains, reduced the size difference between fine and coarse grains, and produced stronger copper/cubic texture. A larger UE strain also resulted in the formation of Y-phase and GP zones. In T4 Large-UE samples, higher size stability of disk-like Y-phase was observed, while in T6 Large-UE samples, the growth of Y-phase was accompanied by intrinsic atomic shift. The collective effects of finer bimodal grain structure, stronger fiber texture, and co-precipitation of Y-phase and eta'/eta precipitates led to higher ultimate tensile strength and superior strain in large-UE strain samples under T6 ageing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Kaiyun Xiang, Lipeng Ding, Zhihong Jia, Xiaofang Yang, Qing Liu, Zhang Hao
Summary: The phase transition of the eta-MgZn2 Laves phase from C14 to C15 structure in peak aged Al-Zn-Mg-Cu alloy was studied using atomic resolution high-angle annular dark-field scanning transmission electron microscopy (HAADFSTEM) and density functional theory (DFT) calculations. The formation of a well-ordered C15 structural MgZn2 as an independent precipitate was observed for the first time in the alloy. The C15 structure was found to be transformed from the C14 structure through synchroshear activation and was associated with the formation of twin-like structures and five-fold symmetry twins.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Katarzyna Stan-Glowinska, Amelia Zieba, Lukasz Rogal
Summary: This study investigates the microstructures and mechanical properties of two conventionally cast Al-Mg-Zn base alloys during aging process. The results show that the Ga-bearing alloy exhibits higher hardness and tensile strength, which can be attributed to its higher precipitate number density. In addition, the structure of formed precipitates differs between the two alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Nagumothu Kishore Babu, Mahesh Kumar Talari, Prakash Srirangam, Abdullah Yahia AlFaify, Ateekh Ur Rehman
Summary: This study investigated the influence of welding speed on the microstructure, hardness, and tensile properties of AZ31 magnesium alloy gas tungsten arc welds. The results showed that increasing welding speed led to a wider equiaxed zone in the center of the fusion zone, and the highest welding speed resulted in the smallest average grain size. Welds prepared with higher welding speed exhibited increased strength, hardness, and ductility, which can be attributed to low heat input.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Yu-Ying He, Gang Fang
Summary: In this study, the dynamic precipitation (DP) of Mg17Al12 phase during the deformation of an Mg-Al-Zn-RE alloy was investigated. The effects of temperature and strain rate on the volume fraction, number density, and average size of Mg17Al12 precipitates were studied. Phenomenological models linking the precipitation parameters with deformation conditions were established and validated. The pinning effect of DP on grain growth and the influence of temperature on DRXed grain size were also discussed. The results provide insights into the understanding of microstructural evolution in the Mg-Al-Zn-RE alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Abhinav Parakh, Andrew C. Lee, Stella Chariton, Melody M. Wang, Mehrdad T. Kiani, Vitali B. Prakapenka, X. Wendy Gu
Summary: Precipitate-matrix interactions govern the mechanical behavior of precipitate strengthened Al-based alloys. We studied the high-pressure behavior of Al7075 alloy separately from the high strain-rate behavior. High pressure can significantly enhance the strength of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Astronomy & Astrophysics
A. Albert, M. Andre, M. Anghinolfi, G. Anton, M. Ardid, J. -J. Aubert, J. Aublin, B. Baret, S. Basa, B. Belhorma, V. Bertin, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M. C. Bouwhuis, H. Branzas, R. Bruijn, J. Brunner, J. Busto, A. Capone, L. Caramete, J. Carr, V. Carretero, S. Celli, M. Chabab, T. N. Chau, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, A. Coleiro, M. Colomer-Molla, R. Coniglione, P. Coyle, A. Creusot, A. F. Diaz, G. de Wasseige, A. Deschamps, C. Distefano, I. Di Palma, A. Domi, C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, N. El Khayati, A. Enzenhofer, P. Fermani, G. Ferrara, F. Filippini, L. Fusco, Y. Gatelet, P. Gay, H. Glotin, R. Gozzini, R. Gracia, K. Graf, C. Guidi, S. Hallmann, H. van Haren, A. J. Heijboer, Y. Hello, J. J. Hernandez-Rey, J. Hossl, J. Hofestadt, F. Huang, G. Illuminati, C. W. James, B. Jisse-Jung, M. de Jong, P. de Jong, M. Jongen, M. Kadler, O. Kalekin, U. Katz, N. R. Khan-Chowdhury, A. Kouchner, I. Kreykenbohm, V. Kulikovskiy, R. Lahmann, R. Le Breton, D. Lefevre, E. Leonora, G. Levi, M. Lincetto, D. Lopez-Coto, S. Loucatos, L. Maderer, J. Manczak, M. Marcelin, A. Margiotta, A. Marinelli, J. A. Martinez-Mora, S. Mazzou, K. Melis, P. Migliozzi, M. Moser, A. Moussa, R. Muller, L. Nauta, S. Navas, E. Nezri, A. Nunez-Castineyra, B. O'Fearraigh, M. Organokov, G. E. Pavalas, C. Pellegrino, M. Perrin-Terrin, P. Piattelli, C. Pieterse, C. Poire, V. Popa, T. Pradier, N. Randazzo, S. Reck, G. Riccobene, F. Salesa Greus, D. F. E. Samtleben, A. Sanchez-Losa, M. Sanguineti, P. Sapienza, J. Schnabel, F. Schussler, M. Spurio, Th. Stolarczyk, M. Taiuti, Y. Tayalati, T. Thakore, S. J. Tingay, B. Vallage, V. Van Elewyck, F. Versari, S. Viola, D. Vivolo, J. Wilms, A. Zegarelli, J. D. Zornoza, J. Zuniga, S. Buson
Summary: A search for astrophysical pointlike neutrino sources using ANTARES detector data revealed no significant associations with the tested objects. A dedicated analysis of the blazar MG3 J225517+2409 showed it to be the most significant source within the Fermi 3LAC sample.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
A. Albert, M. Andre, M. Anghinolfi, G. Anton, M. Ardid, J-J Aubert, J. Aublin, B. Baret, S. Basa, B. Belhorma, V Bertin, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M. C. Bouwhuis, H. Branzas, R. Bruijn, J. Brunner, J. Busto, A. Capone, L. Caramete, J. Carr, V Carretero, S. Celli, M. Chabab, T. N. Chau, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, A. Coleiro, M. Colamer-Molla, R. Coniglione, P. Coyle, A. Creusot, A. F. Diaz, G. de Wasseige, A. Deschamps, C. Distefano, I Di Palma, A. Domi, C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, N. El Khayati, A. Enzenhofer, A. Ettahiri, P. Fermani, G. Ferrara, F. Filippini, L. Fusco, R. Garcia, P. Gay, H. Glotin, R. Gozzini, K. Graf, C. Guidi, S. Hallmann, H. van Haren, A. J. Heijboer, Y. Hello, J. J. Hernandez-Rey, J. Hossi, J. Hofestadt, F. Huang, G. Illuminati, C. W. James, B. Jisse-Jung, M. de Jong, P. de Jong, M. Jongen, M. Kadler, O. Kalekin, U. Katze, N. R. Khan-Chowdhury, A. Kouchner, I Kreykenbohm, V Kulikovskiy, R. Lahmann, R. Le Breton, D. Lefevre, E. Leonora, G. Levi, M. Lincetto, D. Lopez-Coto, S. Loucatos, L. Maderer, J. Manczak, M. Marcelin, A. Margiotta, A. Marinelli, J. A. Martinez-Mora, S. Mazzou, K. Melis, P. Migliozzi, M. Moser, A. Moussa, R. Muller, L. Nauta, S. Navas, E. Nezri, A. Nunez-Castineyra, B. O'Fearraigh, M. Organokov, G. E. Pavalas, C. Pellegrino, M. Perrin-Terrin, P. Piattelli, C. Pieterse, C. Poire, V Popa, T. Pradier, N. Randazzo, S. Reck, G. Riccobene, A. Sanchez-Losa, D. F. E. Samtleben, M. Sanguineti, P. Sapienza, J. Schnabel, F. Schussler, M. Spurio, Th Stolarczyk, M. Taiuti, Y. Tayalati, T. Thakore, S. J. Tingay, B. Vallage, V. Van Elewyck, F. Versari, S. Viola, D. Vivolo, J. Wilms, A. Zegarelli, J. D. Zornoza, J. Zuniga
Summary: The first gamma-ray burst detections by Imaging Atmospheric Cherenkov Telescopes have been recently announced, however, a dedicated search for neutrinos in space and time coincidence with the gamma-ray emission observed by IACTs yielded no results. Upper limits on the energetics of the neutrino emission were inferred, which were several orders of magnitude above the observed gamma-ray emission and did not allow to constrain the available models.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
A. Albert, S. Alves, M. Andre, M. Anghinolfi, G. Anton, M. Ardid, J. -J. Aubert, J. Aublin, B. Baret, S. Basa, B. Belhorma, M. Bendahman, V. Bertin, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M. C. Bouwhuis, H. Branzas, R. Bruijn, J. Brunner, J. Busto, A. Capone, L. Caramete, J. Carr, V. Carretero, S. Celli, M. Chabab, T. N. Chau, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, A. Coleiro, M. Colomer-Molla, R. Coniglione, P. Coyle, A. Creusot, A. F. Diaz, G. de Wasseige, A. Deschamps, C. Distefano, I. Di Palma, A. Domi, C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, N. El Khayati, A. Enzenhofer, P. Fermani, G. Ferrara, F. Filippini, L. Fusco, R. Garcia, Y. Gatelet, P. Gay, H. Glotin, R. Gozzini, K. Graf, C. Guidi, S. Hallmann, H. van Haren, A. J. Heijboer, Y. Hello, J. J. Hernandez-Rey, J. Hossl, J. Hofestadt, F. Huang, G. Illuminati, C. W. James, B. Jisse-Jung, M. de Jong, P. de Jong, M. Jongen, M. Kadler, O. Kalekin, U. Katz, N. R. Khan-Chowdhury, A. Kouchner, I. Kreykenbohm, V. Kulikovskiy, R. Lahmann, R. Le Breton, D. Lefevre, E. Leonora, G. Levi, M. Lincetto, D. Lopez-Coto, S. Loucatos, L. Maderer, J. Manczak, M. Marcelin, A. Margiotta, A. Marinelli, J. A. Martinez-Mora, K. Melis, P. Migliozzi, M. Moser, A. Moussa, R. Muller, L. Nauta, S. Navas, E. Nezri, A. Nunez-Castineyra, B. O'Fearraigh, M. Organokov, G. E. Pavalas, C. Pellegrino, M. Perrin-Terrin, P. Piattelli, C. Pieterse, C. Poire, V. Popa, T. Pradier, N. Randazzo, S. Reck, G. Riccobene, F. Salesa Greus, D. F. E. Samtleben, A. Sanchez-Losa, M. Sanguineti, P. Sapienza, J. Schnabel, J. Schumann, F. Schussler, M. Spurio, Th. Stolarczyk, M. Taiuti, Y. Tayalati, T. Thakore, S. J. Tingay, B. Vallage, V. Van Elewyck, F. Versari, S. Viola, D. Vivolo, J. Wilms, A. Zegarelli, J. D. Zornoza, J. Zuniga
Summary: This study presents a combined measurement of the energy spectra of atmospheric nu(e) and nu(mu) using the ANTARES neutrino telescope in the high energy range. The analysis focuses on interactions of neutrinos within the detector, yielding electron and muon neutrino fluxes. The results are compared with previous measurements, revealing the energy spectra of atmospheric neutrinos.
Article
Materials Science, Multidisciplinary
A. Deschamps, C. R. Hutchinson
Summary: Nanoscale precipitation is a widely used microstructural tool for manipulating the properties of metallic alloys, particularly to increase strength. The process is controlled by an interplay between thermodynamics and kinetics, resulting in nucleation, growth, and coarsening in a variety of precipitation trajectories.
Article
Materials Science, Multidisciplinary
Gabriel Spartacus, Joel Malaplate, Frederic De Geuser, Isabelle Mouton, Denis Sornin, Michel Perez, Raphaelle Guillou, Benoit Arnal, Elodie Rouesne, Alexis Deschamps
Summary: The evolution of nano-oxides in ODS steels plays a crucial role in their strength and stability, including the transformation process between Y2Ti2O7 and Y2TiO5.
Review
Materials Science, Multidisciplinary
Dierk Raabe, Dirk Ponge, Peter J. Uggowitzer, Moritz Roscher, Mario Paolantonio, Chuanlai Liu, Helmut Antrekowitsch, Ernst Kozeschnik, David Seidmann, Baptiste Gault, Frederic De Geuser, Alexis Deschamps, Christopher Hutchinson, Chunhui Liu, Zhiming Li, Philip Prangnell, Joseph Robson, Pratheek Shanthraj, Samad Vakili, Chad Sinclair, Laure Bourgeois, Stefan Pogatscher
Summary: Aluminum has both positive and negative impacts on sustainability. Recycling aluminum can improve sustainability, while extracting it from ores is energy-intensive. The amount of recyclable aluminum is expected to double by 2050, offering an opportunity for a circular economy. However, the presence of elemental contamination in post-consumer scrap poses challenges for alloy design.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
I. -e. Benrabah, H. P. Van Landeghem, F. Bonnet, B. Denand, G. Geandier, A. Deschamps
Summary: The composition dependence of ferrite growth kinetics in Fe-C-X ternary alloyed steels was investigated using a high-throughput approach. Experimental results showed that the classical local equilibrium and para-equilibrium models fail to capture the effect of composition and temperature on the growth kinetics, while a modified version of the three-jump solute drag model considering the interactions between elements at the austenite/ferrite interface can well describe the experimental results.
Article
Chemistry, Physical
Hang Xue, Chong Yang, Frederic De Geuser, Peng Zhang, Jinyu Zhang, Bin Chen, Fuzhu Liu, Yong Peng, Jianjun Bian, Gang Liu, Alexis Deschamps, Jun Sun
Summary: Lightweight design and advanced energy applications require high-strength Al alloys for high-temperature use. However, current commercial high-strength Al alloys are limited to low-temperature applications due to difficulties in achieving both high thermal stability and large volume fraction of coherent nanoprecipitates. In this study, we demonstrate a strategy to stabilize coherent nanoprecipitates in Sc-added Al-Cu-Mg-Ag alloys, resulting in exceptional creep resistance and tensile strength at 400 degrees C. The formation of the stable nanoprecipitates is triggered by ledge-aided in situ phase transformation between slow-diffusing Sc and fast-diffusing Cu atoms. This method shows promise for the development of advanced high-temperature light alloys for large-scale industrial production.
Article
Materials Science, Multidisciplinary
Gabriel Spartacus, Joel Malaplate, Frederic De Geuser, Denis Sornin, Isabelle Mouton, Raphaelle Guillou, Alexis Deschamps
Summary: Oxide Dispersion Strengthened (ODS) steels, processed by powder metallurgy, are studied for their application in nuclear power plants. The temperature increase during outgassing and hot consolidation triggers the formation of nano-oxides. Small Angle X-Ray Scattering (SAXS) and Atom Probe Tomography (APT) were used to assess the size, chemical and structural properties of nano-oxides during a thermal treatment at 700 degrees C. The results show that the size and number density of nano-oxides remain close to those without the 700 degrees C treatment, but their growth rate is higher at 700 degrees C than 1100 degrees C. A small quantity of aluminum remains in the precipitates during this isothermal treatment.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
N. Baghbanaghaie, A. Deschamps, M. Worswick, S. Esmaeili
Summary: A new microstructural evolution formulation is proposed to predict the relationship between the evolution of precipitate size and its relative volume fraction in concurrent precipitate nucleation and growth processes in AA7xxx alloys. By combining this formulation with a previously developed yield strength model, a new formulation is also developed to predict precipitation hardening due to weak shearable precipitates using only one variable. Experimental data from various sources are used to evaluate and validate the new modeling relationships, enabling highly reliable predictions for the microstructure and yield strength evolution during underaging in AA7xxx alloys.
Article
Chemistry, Physical
Amandine Duchaussoy, Xavier Sauvage, Alexis Deschamps, Frederic De Geuser, Gilles Renou, Zenji Horita
Summary: High yield strength can be achieved in 7### aluminum alloys through severe plastic deformation (SPD) using the High Pressure Torsion (HPT) process. However, this technique has limitations in terms of processing large parts and achieving homogeneous plastic strain. A recent development called High Pressure Sliding (HPS) allows for homogeneous deformation of large scale sheets, offering promise for the production of high strength aluminum alloys. Studying the competition between precipitation, grain growth, and recrystallization during heat treatments after SPD provides insight into obtaining high mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
I. -E. Benrabah, H. P. Van Landeghem, F. Bonnet, B. Denand, G. Geandier, A. Deschamps
Summary: This study investigates the effect of composition on ferrite growth kinetics in quaternary Fe-C-X1-X2 systems (X: Ni, Cr, Mo) using a high-throughput methodology. The study provides valuable insight for modeling phase transformations and microstructural evolution in multi-component steels. The findings contribute to accelerating alloy optimization and enhancing process control.
Proceedings Paper
Environmental Studies
Gabriel Spartacus, Joel Malaplate, Frederic De Geuser, Isabelle Mouton, Denis Sornin, Alexis Deschamps
Summary: Oxide Dispersion Strengthened (ODS) steels are potential materials for nuclear fusion and 4th generation fission power plants, processed by mechanical alloying and hot consolidation. The study shows that Fe-14Cr ferritic ODS exhibits higher corrosion resistance, while Fe-9Cr ferritic/martensitic ODS has a more uniform microstructure after hot extrusion.
30TH INTERNATIONAL CONFERENCE NUCLEAR ENERGY FOR NEW EUROPE (NENE 2021)
(2021)
Article
Materials Science, Multidisciplinary
Amandine Duchaussoy, Xavier Sauvage, Alexis Deschamps, Frederic De Geuser, Gilles Renou, Zenji Horita
Summary: Combining submicrometer grain size with nanoscaled precipitation is an attractive approach to achieve high yield stress with reasonable ductility in aluminum alloys. The study systematically investigated the interconnection of these mechanisms in an Al-Zn-Mg-Cu alloy processed by high pressure torsion at room temperature to achieve a submicrometer grain size. The experimental data demonstrate that precipitation starts at much lower temperature in the deformed state and that the precipitation sequence is modified as compared to the classical coarse grain alloy.
Correction
Materials Science, Multidisciplinary
Y. Yan, L. Peguet, O. Gharbi, A. Deschamps, C. R. Hutchinson, S. K. Kairy, N. Birbilis
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)