Article
Materials Science, Multidisciplinary
Huma Bilal, Keita Nomoto, Bernd Gludovatz, Jamie J. Kruzic, Anna Ceguerra, Simon P. Ringer
Summary: This study systematically evaluated the application of atom probe tomography in bulk metallic glasses, demonstrating satisfactory compositional accuracy with a customised approach and discussing data quality and clustered evaporation effects.
MICROSCOPY AND MICROANALYSIS
(2022)
Article
Thermodynamics
Adam Revesz, Talaye Arjmandabasi, Erhard Schafler, David J. Browne, Zsolt Kovacs
Summary: Bulk metallic glass of Cu38Zr54Al8 composition was synthesized and subjected to severe plastic deformation. The microstructure and thermal behavior of the glass were examined using X-ray diffraction and differential scanning calorimetry. The glass showed excellent glass forming parameters and a two-stage devitrification event during heating. The glassy structure was preserved during the deformation process, indicating high stability against devitrification.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Multidisciplinary
Chaitanya Mahajan, Vahid Hasannaeimi, Mayur Pole, Elizabeth Kautz, Bharat Gwalani, Sundeep Mukherjee
Summary: The effect of chemistry change on corrosion mechanisms and passive film characteristics of model Ni-P and Co-P metallic glass coatings on mild steel was investigated. Increasing phosphorus content enhanced corrosion resistance, with the presence of hypophosphite and phosphate anions observed on the corroded surfaces. Enrichment of phosphorus in the passive layer facilitated the restoration of the protective hypophosphite anion layer during dissolution. A correlation between electronic structure and corrosion resistance was established, as the relative work function increased with higher phosphorus content.
Article
Materials Science, Multidisciplinary
Keita Nomoto, Anna Ceguerra, Christoph Gammer, Bosong Li, Huma Bilal, Anton Hohenwarter, Bernd Gludovatz, Jurgen Eckert, Simon P. Ringer, Jamie J. Kruzic
Summary: The study revealed the hierarchical structure of BMGs through nanobeam electron diffraction experiments, showing that the local hardness of microscale domains decreases with the size and volume fraction of atomic clusters with higher local MRO. A model of ductile phase softening was proposed to enable the design of BMGs in the future by tuning the MRO size and distribution in the nanostructure.
Article
Nanoscience & Nanotechnology
Alexandra L. Mitchell, Daniel E. Perea, Mark G. Wirth, Joseph Ryan, Randall E. Youngman, Aram Rezikyan, Albert J. Fahey, Daniel K. Schreiber
Summary: The nanoscale microstructure and chemistry of a transparent gahnite glass-ceramic and its precursor glass were investigated using various techniques. New information regarding ZrO2 and gahnite crystallites was found, and answers to questions surrounding nucleation, microstructure, and residual glass composition were provided.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Ceramics
Lianshun Zhang, Tuo Wang, Qiqi Hou, Qi Hao, Jichao Qiao
Summary: Phase separation is observed in the glassy matrix of a certain bulk metallic glass after deformation, leading to the formation of Cu-rich and Zr, Fe-rich zones. The deformed material shows increased intensity of beta-relaxation and free volume, exhibiting a work-hardening behavior and higher compressive plasticity compared to the undeformed material, which is attributed to microstructural heterogeneity and rejuvenation caused by the deformation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Nanoscience & Nanotechnology
Huijun Guo, Jianfeng Fan, Hua Zhang, Qiang Zhang, Weiguo Li, Hongbiao Dong
Summary: A simple and effective method is proposed to prepare bulk nanocrystalline pure Mg with a grain size of 20 nm using hydrogenation-disproportionation-desorption-recombination (HDDR) followed by spark plasma sintering (SPS) and hot extrusion (HE) techniques. The NC Mg samples show high tensile yield stress and compressive yield strength, which are much higher than their coarse-grain counterparts and as-cast samples.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Ceramics
Lingen Liu, Shuang Zhang, Xianfeng Xin, Guoqiang Lin, Yingmin Wang, Jianbing Qiang, Peng Wan, Chuang Dong
Summary: This study interprets and optimizes the composition of a typical quaternary bulk metallic glass using a dual-cluster formula approach. The optimal glass former is found to have a chemical formula of Zr17Cu10Al3Ni2, with an electron number per unit formula slightly below 48. This research confirms the 24-electron rule for single-cluster formulas and provides an easy route towards understanding the complex chemistries of bulk metallic glasses via multiple single-cluster formulas.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Weihua Zhou, Yonghua Meng, Fenghui Duan, Wei Huang, Jiahao Yao, Jie Pan, Yinxiao Wang, Yi Li
Summary: The study found that the formation of the tau(3) phase (Zr50Cu29Ni2Al19 intermetallics) is triggered when the oxygen level reaches 350 ppm, with oxygen mainly concentrated in this phase. Additionally, the lattice parameter of the tau(3) phase increases with the oxygen content.
Article
Materials Science, Multidisciplinary
Tianding Xu, Xiao-Dong Wang, Eric M. Dufresne, Yang Ren, Qingping Cao, Dongxian Zhang, Jian-Zhong Jiang
Summary: Anomalous fast atomic dynamics were discovered in a metallic glass with good glass forming ability, mainly attributed to the increased mobility of Cu atoms by Ag addition, leading to the formation of structural heterogeneity at the atomic level.
MATERIALS TODAY PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Se-Ho Kim, Leigh T. Stephenson, Torsten Schwarz, Baptiste Gault
Summary: This study compared the distribution of constituent elements in two different smartphone glass samples using X-ray spectroscopy techniques and atom probe tomography (APT). The results demonstrated that APT can be considered as an alternative technique for imaging the chemical distribution in glass for mobile applications.
MICROSCOPY AND MICROANALYSIS
(2023)
Article
Chemistry, Physical
M. -N. Avettand-Fenoel, X. Sauvage, M. Marinova, A. Addad
Summary: Experimental investigation on the crystallization mechanisms and sequence of a Fe64B24Y4Nb6Al0.4 metallic glass reveals that (Fe,Nb)B crystals nucleate first, followed by the growth of Fe62B14Y3 dendritic phase, and longer annealings result in the nucleation of additional (Fe,Nb)(2.4)B crystals in the amorphous matrix.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Johan Lindwall, Andreas Lundback, Jithin James Marattukalam, Anders Ericsson
Summary: This study presents an alternative method of predicting the influence of process parameters on crystalline phase evolution during laser-based powder bed fusion (PBF-LB) through modeling. The simulation results show a similar trend to the experimental estimates, indicating that low laser power, large hatch spacing, and long hatch lengths are beneficial for glass formation.
Article
Chemistry, Physical
Yu Xia, Jiaming Liu, Xingchu Zhang, Renlong Zhou
Summary: Research findings show that laser energy absorption and field evaporation mechanisms can be described by an effective cross section, while the fluctuation of charge state is influenced by collective excitation of electrons. The average charge state is only dependent on the static field strength.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Materials Science, Multidisciplinary
S. V. Vasiliev, K. A. Svyrydova, N. V. Vasylyeva, V. I. Tkatch
Summary: The non-isothermal crystallization kinetics of Fe48Co32P14B6 glass were experimentally studied using differential scanning calorimetry (DSC) with heating rates ranging from 5 to 40 K/min. A kinetic model combining the Kolmogorov's model and the Kashchiev's transient nucleation approach was derived to describe the interface-controlled mode of crystallization. The experimental DSC scans were accurately approximated using thermodynamic and kinetic parameters derived from analysis of the isothermal crystallization, and the effect of non-stationarity on the thermal stability of metallic glasses was discussed.
Article
Geology
Rick Verberne, Hugo W. van Schrojenstein Lantman, Steven M. Reddy, Matteo Alvaro, David Wallis, Denis Fougerouse, Antonio Langone, David W. Saxey, William D. A. Rickard
Summary: The migration of trace elements in rutile is investigated through the study of low-angle boundaries formed by dislocation creep in an omphacite vein. It is found that dislocation cores along these low-angle boundaries are enriched with various trace elements, including Fe and Ca. The role of dislocation microstructures as fast-diffusion pathways should be considered to avoid erroneous interpretations for Ca and Fe.
JOURNAL OF METAMORPHIC GEOLOGY
(2023)
Article
Microscopy
A. J. Breen, A. C. Day, B. Lim, W. J. Davids, S. P. Ringer
Summary: In this study, a method was developed to enhance the contrast of poles and zone lines in atom probe data by plotting crystallographically correlated metrics. This method can be applied to a wide range of crystalline datasets where crystallographic information is not readily apparent from existing methods, and it helps to gain a deeper understanding of field evaporation behavior during atom probe experiments.
Article
Chemistry, Physical
Peng Zhang, Majid Laleh, Anthony E. Hughes, Ross K. W. Marceau, Tim Hilditch, Mike Yongjun Tan
Summary: Although studies on hydrogen embrittlement have been conducted for a long time, there is a lack of systematic research on the susceptibility of steels to hydrogen embrittlement under different electrochemical charging conditions. This study focuses on this knowledge gap by evaluating the behavior of a typical pipeline steel (X65) after hydrogen-charging in different electrolytes that simulate industrial environments. The results show that the susceptibility to hydrogen embrittlement of X65 steel varies significantly with the hydrogen-charging electrolytes and, to a lesser extent, with the electrochemical charging variables.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Multidisciplinary Sciences
Fred Jourdan, Nicholas E. Timms, Tomoki Nakamura, William D. A. Rickard, Celia Mayers, Steven M. Reddy, David Saxey, Luke Daly, Phil A. Bland, Ela Eroglu, Denis Fougerouse
Summary: Rubble pile asteroids, made up of reassembled fragments, are more abundant than previously believed and can withstand bombardment in the solar system for extremely long periods. By analyzing samples from asteroid 25143 Itokawa, researchers found that the rubble pile structure formed at least 4.2 billion years ago and could provide valuable insights for developing strategies to prevent asteroid collisions with Earth.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Richard J. M. Taylor, Steven M. Reddy, David W. Saxey, William D. A. Rickard, Fengzai Tang, Caue S. Borlina, Roger R. Fu, Benjamin P. Weiss, Paul Bagot, Helen M. Williams, Richard J. Harrison
Summary: Researchers have discovered magnetite inclusions in zircon grains from the Jack Hills, which potentially carry a record of Earth's magnetic field dating back 4.2 billion years ago. The magnetite may be secondary in nature, suggesting a younger magnetic record than the zircon's crystallization age. The study reveals that the formation of secondary magnetite and the remobilization of lead and iron occurred after 3.4 billion years ago. This finding provides new opportunities to enhance our understanding of the Archean geodynamo. Rating: 9 out of 10.
Article
Materials Science, Multidisciplinary
Han Lin Mai, Xiang-Yuan Cui, Daniel Scheiber, Lorenz Romaner, Simon P. Ringer
Summary: This study investigates the segregation and co-segregation effects of phosphorus (P) and transition metal (TM) elements at grain boundaries (GBs) in steels. The findings reveal that while P alone is unlikely to cause intergranular fracture, its stronger segregation binding compared to TMs can explain its ubiquitous presence at GBs. The repulsive interactions and strong segregation binding of P deplete cohesion-enhancing solutes at general GBs and favor cohesion-lowering P-TM co-segregation combinations. These mechanisms contribute to P-induced temper embrittlement in alloyed steels and have significant implications for GB engineering.
Article
Materials Science, Multidisciplinary
Zizheng Song, Ranming Niu, Xiangyuan Cui, Elena V. Bobruk, Maxim Yu. Murashkin, Nariman A. Enikeev, Ji Gu, Min Song, Vijay Bhatia, Simon P. Ringer, Ruslan Z. Valiev, Xiaozhou Liao
Summary: Superplastic deformation of polycrystalline materials is usually achieved by diffusion-assisted grain boundary sliding at high temperatures. Recent research has shown that room-temperature superplasticity can be achieved in ultrafine-grained Al-Zn based alloys, but the underlying mechanism is still unclear. This study utilized in-situ tensile straining, electron microscopy characterization, and atomistic density functional theory simulation to reveal that the superplasticity at room temperature is achieved by grain boundary sliding and grain rotation, facilitated by the continuous diffusion of Zn. The diffusion of Zn atoms from grains to grain boundaries forms a Zn nanolayer, acting as a solid lubricant to lower the energy barrier of grain boundary sliding.
Article
Geochemistry & Geophysics
M. J. Turuani, A. -M. Seydoux-Guillaume, A. T. Laurent, S. M. Reddy, S. L. Harley, D. Fougerouse, D. Saxey, S. Gouy, P. De Parseval, S. Reynaud, W. Rickard
Summary: Understanding the mass transfer mechanisms of radionuclides in monazite is crucial for its use as a geochronometer. This study investigates the mechanisms of Th and Pb mobility in monazite crystals through multiscale characterization. The results show the presence of linear Th-rich features and nanoscale clusters composed of radiogenic Pb within monazite lattice defects. The formation of these features is attributed to fluid ingress and radiation damage production. Nanophases containing Pb are also observed in all grains, suggesting a replacement mechanism of monazite through fluid interactions. This multiscale study provides new insights for interpreting geochronological information.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2023)
Article
Multidisciplinary Sciences
Tingting Song, Zibin Chen, Xiangyuan Cui, Shenglu Lu, Hansheng Chen, Hao Wang, Tony Dong, Bailiang Qin, Kang Cheung Chan, Milan Brandt, Xiaozhou Liao, Simon P. P. Ringer, Ma Qian
Summary: This study demonstrates a series of titanium-oxygen-iron compositions with outstanding tensile properties, achieved through alloy design and additive manufacturing. These alloys, strengthened by the abundant elements of oxygen and iron, offer potential for diverse applications and the industrial-scale use of waste sponge titanium. Additionally, they have significant economic and environmental potential for reducing the carbon footprint of energy-intensive sponge titanium production.
Article
Chemistry, Multidisciplinary
Xiang Ding, Xiangyuan Cui, Li-Ting Tseng, Yiren Wang, Jiangtao Qu, Zengji Yue, Lina Sang, Wai Tung Lee, Xinwei Guan, Nina Bao, Ci Sathish, Xiaojiang Yu, Shibo Xi, Mark B. H. Breese, Rongkun Zheng, Xiaolin Wang, Lan Wang, Tom Wu, Jun Ding, Ajayan Vinu, Simon P. Ringer, Jiabao Yi
Summary: In this work, Ni/NiO nanocomposites were fabricated by depositing Ni and NiO thin layers alternately and annealing them at specific temperatures. It was found that the samples annealed at 473 K exhibited a significantly enhanced saturation magnetization exceeding 607 emu cm-3 at room temperature, surpassing that of pure Ni (480 emu cm-3). Material characterizations and density functional theory calculations confirmed that the NiO nanoclusters embedded in the Ni matrix were primarily responsible for the high magnetization, as they were ferromagnetically coupled with Ni.
Article
Microscopy
Levi Tegg, Andrew J. Breen, Siyu Huang, Takanori Sato, Simon P. Ringer, Julie M. Cairney
Summary: The CAMECA Invizo 6000 atom probe microscope utilizes unique ion optics, including dual antiparallel deep ultraviolet lasers, a flat counter electrode, and various lenses, to enhance the field-of-view without compromising the mass resolving power. This study demonstrates the performance of the Invizo 6000 through three material case studies, using both air and vacuum-transfer between instruments. The results show that the Invizo 6000 significantly improves the field-of-view compared to a LEAP 4000 X Si and enhances specimen yield, particularly for difficult samples like oxides.
Article
Chemistry, Physical
Haijiao Lu, Nasir Uddin, Zhehao Sun, Zibin Chen, Zackaria Mahfoud, Yilan Wu, Ary Anggara Wibowo, Zhicheng Su, Xinmao Yin, Chi Sin Tang, Xiaozhou Liao, Simon P. Ringer, Xiu Song Zhao, Andrew T. S. Wee, Michel Bosman, Zongyou Yin
Summary: By integrating plasmonic bismuth nanoparticles and non-plasmonic redox heterojunctions, we have successfully achieved high activity and selectivity in the transformation of CO2 into methanol. This is achieved through the use of localized surface plasmon resonances (LSPRs) to direct the reaction pathways and optimize product selectivity.
Article
Engineering, Manufacturing
Bryan Lim, Keita Nomoto, Amy J. Clarke, Sudarsanam Suresh Babu, Sophie Primig, Xiaozhou Liao, Andrew J. Breen, Simon P. Ringer
Summary: Complex geometries and topology optimisations are driving the additive manufacturing of Ni-based superalloys, but there are thermal signature differences in complex components compared to commonly studied test coupons, leading to unaccounted microstructure-property variations. The effects of topological changes, such as engineered internal voids, on the mechanical performance of as-fabricated Haynes 282 monolith are investigated, revealing the influence of changing thermal conditions on the local mechanical property response.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Nana Kwabena Adomako, Nima Haghdadi, James F. L. Dingle, Ernst Kozeschnik, Xiaozhou Liao, Simon P. Ringer, Sophie Primig
Summary: Metal additive manufacturing is an ideal technique for producing complex shaped engineering parts, but advanced control of microstructures and properties through modeling is necessary. This study presents a computational modeling approach to predict and optimize the microstructures and properties during metal additive manufacturing.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Zhiheng Zhang, Hansheng Chen, Jiaying Jin, Bryan Lim, Xiaolian Liu, Wei Li, Mi Yan, Simon P. Ringer
Summary: This study presents a multi-main-phase Nd-Dy-Fe-B magnet with a Dy-lean core-Dy-rich shell microstructure, which exhibits high magnetic performance and thermal stability. The formation mechanism of the core-shell microstructure is explained through experimental and simulation analysis, highlighting the potential application of the magnet in large-scale production.
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)
