Article
Materials Science, Multidisciplinary
Michal Leibner, Martin Vlach, Veronika Kodetova, Jozef Vesely, Jakub Cizek, Hana Kudrnova, Frantisek Lukac
Summary: The development of microstructure in an Al-Sc-Er-Zr alloy during aging at 600 degrees C was investigated. It was found that Sc atoms segregate at dislocations, and two different structures of precipitates were observed.
Article
Materials Science, Multidisciplinary
Martin Vlach, Jakub Cizek, Veronika Kodetova, Tomas Kekule, Frantisek Lukac, Miroslav Cieslar, Hana Kudrnova, Lucia Bajtosova, Michal Leibner, Petr Harcuba, Jaroslav Malek, Volkmar Neubert
Summary: The precipitation reactions of Al-3.4% Mg-2.7% Zn-0.80% Cu-0.10% Fe-0.05% Si alloy with and without Sc and Zr additions were investigated. The addition of Sc and Zr microalloying elements resulted in substantial grain refinement and the formation of secondary Al-3(Sc,Zr) particles, improving the thermal stability of the alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Thermodynamics
V Kodetova, M. Vlach, H. Kudrnova, J. Malek, M. Cieslar, L. Bajtosov, T. Kekule, P. Harcuba, F. Lukac, M. Leibner
Summary: The influence of cold rolling on thermal and mechanical properties, as well as microstructure observation of cast AlZnMgCu(ScZr) alloys, was investigated, revealing the presence of eutectic phases and various quasicrystalline structures in the materials. The hardening of the alloys was mainly attributed to phase precipitation, with the addition of Sc,Zr stabilizing grains and preventing recrystallization at elevated temperatures.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Multidisciplinary
Xue Na, Wenqing Liu, Zhu Liu, T. Muthuramalingam
Summary: The study focused on the micro hardness and micro structure of Al-Sc alloy and Al-Sc-Zr alloy with different scandium percentages. It was observed that there was only slight difference in hardness during the initial aging stage of the developed alloys, while the Al-Sc-Zr alloy maintained peak hardness for a longer period, showing better thermal stability. Analysis also indicated the inhibition of precipitate growth through precipitation of Zr in the initial aging stage. TEM results revealed the formation of two different sized precipitates in the Al-Sc-Zr alloy after reaching peak hardness.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Michal Leibner, Martin Vlach, Veronika Kodetova, Hana Kudrnova, Jozef Vesely, Sebastien Zikmund, Jakub Cizek, Oksana Melikhova, Frantisek Lukac
Summary: The effect of cold-rolling and high-temperature aging on precipitation processes in an Al-Er-Zr alloy was investigated. Based on the results, the decomposition sequence of the supersaturated solid solution was proposed. Cold-rolling enhances the precipitation of Al3Er particles and accelerates the formation of the Zr-rich shell around the Er-rich core. The coherency strain-field around the precipitates is retained even after 4 hours of aging at 600℃.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Li Liu, Jian-Tang Jiang, Xiang-Yuan Cui, Bo Zhang, Liang Zhen, Simon P. Ringer
Summary: The study investigates the correlation between precipitates evolution and mechanical properties of Al-Sc-Zr alloy with Er additions during isothermal ageing. Results show that Er additions significantly improve hardness by increasing the nucleation rate of Al-3(Er,Sc,Zr) precipitates, leading to a higher density of fine nanoparticles. First-principles calculations demonstrate energetically favored solute-solute interactions, rationalizing the observed precipitate structure and formation mechanism.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Xiaomin Liu, Qian Wang, Chuan Zhao, Hongping Li, Mingliang Wang, Dong Chen, Haowei Wang
Summary: The nucleation properties and stability of ordered precipitates in Al-Sc-Er alloy were extensively studied by first-principles calculation. Core-shell structure with Al3Er as the core and Al3Sc as the shell was found to have higher stability, while the segregation of Si and Zr was shown to accelerate the precipitation kinetics.
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Multidisciplinary
Clement N. Ekaputra, Jovid U. Rakhmonov, David Weiss, Jon-Erik Mogonye, David C. Dunand
Summary: The microstructure and mechanical properties of two die-cast hypoeutectic Al-Ce-based alloys modified with Sc, Zr, and Er micro-additions were studied. The Al11Ce3 platelets and L12 Al3(Sc,Zr,Er) nanoprecipitates were found to synergistically interact in strengthening the alloys, resulting in improved hardness and creep resistance.
Article
Chemistry, Physical
Hasan Vafaeenezhad, Hamid Reza Shahverdi
Summary: This study investigates the impact of incorporating different amounts of V into an Al-0.06Sc-0.06Zr-0.18Si at% alloy on the behavior of nanoprecipitates and the creep resistance of the alloy. The findings show that the amount of V added affects the structure, kinetics, coarsening resistance, and creep resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
M. H. Abdelaziz, E. M. Elgallad, H. W. Doty, F. H. Samuel
Summary: The study found that the cast alloys are primarily strengthened by theta-Al2Cu and S-Al2CuMg precipitates and their precursors. In alloys with lower Ni content, some of the copper content was used to form Al-Ni-Cu particles instead of the theta-Al2Cu strengthening phase, leading to higher fractions of theta-Al2Cu phase in Ni-free alloys. TEM observations confirmed the combined strengthening effect of theta-Al2Cu and S-Al2CuMg precipitates and their precursors, as well as the differences in theta-Al2Cu phase content between Ni-free and Ni-containing alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Jiaojiao Shen, Biao Chen, Jie Wan, Jianghua Shen, Jinshan Li
Summary: In this study, the effect of annealing temperatures and durations on the recrystallization behavior, precipitate evolution, and mechanical properties of Al-Mg-Sc-Zr alloys was comprehensively investigated. Results showed that precipitates hindered the movement of dislocation and migration of grain/sub-grain boundaries at low annealing temperatures, but the hindering effect diminished and recrystallization occurred at higher temperatures. The size of Al-3(Sc,Zr) precipitates increased with longer annealing durations. Moreover, the strength of the material decreased with increasing annealing temperature and duration.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
T. Dorin, S. Babaniaris, L. Jiang, A. Cassel, C. P. Race, A. Eggeman, D. J. Kelly, S. J. Haigh, J. D. Robson
Summary: The addition of 0.5wt.% Si in a lean Al-Sc-Zr alloy accelerates precipitation kinetics and leads to the formation of stable core-shell L1(2) dispersoids at 375 degrees Celsius. Si and Fe are detected at the core of the dispersoids, with their content decreasing as the ageing time increases.
Article
Materials Science, Multidisciplinary
Jingyu Jiang, Hongwu Chen, Xiaohang Cao, Feng Jiang, Menghan Zhang
Summary: The study on the effect of annealing temperature on an Al-Mg-Sc-Zr alloy processed by rolling and equal channel angular pressing (ECAP) showed that with an increase in ECAP strain, the grain size became finer and the microstructure more uniform. Vickers hardness increased with ECAP strain, and different samples exhibited varying degrees of hardness reduction after annealing.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yang Wang, Shun Zhang, Ruizhi Wu, Nodir Turakhodjaev, Legan Hou, Jinghuai Zhang, Sergey Betsofen
Summary: Core-shell nanoparticles in Al-Li alloy were formed through double-aging treatment, controlling the precipitation and coarsening process at different temperatures. The coarsening was found to be controlled by interface reactions, with Orowan bypass strengthening as the operative mechanism at lower temperatures.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Hongjie Fang, Hui Liu, Yang Yan, Xier Luo, Xiangchun Xu, Xin Chu, Yujiao Lu, Kun Yu, Diangang Wang
Summary: The microstructure, texture, tensile strength, and corrosion behavior of Al-Mg-Sc-Zr alloy were investigated at different annealing temperatures. The optimal mechanical properties and corrosion resistance were obtained when the alloy was annealed at 300 degrees C for 1 h.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Martin Vlach, Jakub Cizek, Veronika Kodetova, Tomas Kekule, Frantisek Lukac, Miroslav Cieslar, Hana Kudrnova, Lucia Bajtosova, Michal Leibner, Petr Harcuba, Jaroslav Malek, Volkmar Neubert
Summary: The precipitation reactions of Al-3.4% Mg-2.7% Zn-0.80% Cu-0.10% Fe-0.05% Si alloy with and without Sc and Zr additions were investigated. The addition of Sc and Zr microalloying elements resulted in substantial grain refinement and the formation of secondary Al-3(Sc,Zr) particles, improving the thermal stability of the alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Physics, Multidisciplinary
V Kodetova, M. Vlach, J. Cizek, M. Cieslar, L. Bajtosova, H. Kudrnova, M. Leibner, V Sima
ACTA PHYSICA POLONICA A
(2020)
Article
Chemistry, Physical
Silvie Maskova-Cerna, Khrystyna Miliyanchuk, Stanislav Danis, Anatoliy Senyshyn, Lev Akselrud, Alexander Andreev, Ladislav Havela
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Physics, Multidisciplinary
K. Vlaskova, B. Vondrackova, S. Danis, M. Klicpera
ACTA PHYSICA POLONICA A
(2020)
Article
Thermodynamics
V Kodetova, M. Vlach, H. Kudrnova, J. Malek, M. Cieslar, L. Bajtosov, T. Kekule, P. Harcuba, F. Lukac, M. Leibner
Summary: The influence of cold rolling on thermal and mechanical properties, as well as microstructure observation of cast AlZnMgCu(ScZr) alloys, was investigated, revealing the presence of eutectic phases and various quasicrystalline structures in the materials. The hardening of the alloys was mainly attributed to phase precipitation, with the addition of Sc,Zr stabilizing grains and preventing recrystallization at elevated temperatures.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Materials Science, Multidisciplinary
Martin Vlach, Veronika Kodetova, Jakub Cizek, Michal Leibner, Tomas Kekule, Frantisek Lukac, Miroslav Cieslar, Lucia Bajtosova, Hana Kudrnova, Vladimir Sima, Sebastian Zikmund, Eva Cernoskova, Petr Kutalek, Volkmar-Dirk Neubert, Volkmar Neubert
Summary: The study provides a detailed characterization of phase transformations in heat-treated commercial 7075 aluminum alloys with or without low Sc-Zr addition. It is found that the addition of Sc-Zr has a positive influence on the properties of the alloys, including mechanical, electrical, thermal, and corrosion behavior. The strengthening during annealing is caused by the formation of various particles and phases, while the improvement in corrosion properties is attributed to the addition of Sc-Zr.
Article
Chemistry, Physical
Veronika Kodetova, Martin Vlach, Lucia Bajtosova, Michal Leibner, Hana Kudrnova, Jaroslav Malek, Vladimir Mara, Miroslav Cieslar, Sebastien Zikmund
Summary: The addition of Mn, Yb and Zr has a positive influence on grain size in AlYb and AlMnYbZr alloys. Cold rolling results in a deformed structure of the grains with no changes in their size. The precipitation hardening behavior at different temperature intervals was also observed in both alloys after ageing.
Article
Chemistry, Physical
Keito Sawahara, Kohei Yatagai, Torben Boll, Astrid Pundt, Ryota Gemma
Summary: Mechanochemical CO2 methanation reactions using LaNi5 and LaNi4.6Al0.4 hydrogen storage alloy powders were studied by monitoring the gas pressure change during ball-milling. The formation of La-hydroxide contributed to methane generation during ball-milling, and the amount of hydrogen stored in the hydrogen storage powder determined the timing of methane generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Ryota Gemma, Yanshan Lu, Sascha Seils, Torben Boll, Kohta Asano
Summary: Hydrogen- and deuterium-loaded Mg0.25Mn0.75 nanocomposites were prepared by a ball-milling process. The APT analysis showed the formation of non-uniform and interconnected Mg-rich domains in the composites, likely induced by cold-rolling effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Michal Leibner, Martin Vlach, Veronika Kodetova, Hana Kudrnova, Jozef Vesely, Sebastien Zikmund, Jakub Cizek, Oksana Melikhova, Frantisek Lukac
Summary: The effect of cold-rolling and high-temperature aging on precipitation processes in an Al-Er-Zr alloy was investigated. Based on the results, the decomposition sequence of the supersaturated solid solution was proposed. Cold-rolling enhances the precipitation of Al3Er particles and accelerates the formation of the Zr-rich shell around the Er-rich core. The coherency strain-field around the precipitates is retained even after 4 hours of aging at 600℃.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
A. Hotar, V Hotar, M. Svec, S. Danis
Summary: The cyclic oxidation behavior of Fe-Al-Nb and Fe-Al-Nb-C alloys at 900 degrees C was studied, and it was found that the oxidation rate of the alloys increases with the increase of niobium-rich precipitates and niobium carbide particles.
OXIDATION OF METALS
(2022)
Article
Materials Science, Multidisciplinary
Michal Leibner, Martin Vlach, Veronika Kodetova, Jozef Vesely, Jakub Cizek, Hana Kudrnova, Frantisek Lukac
Summary: The development of microstructure in an Al-Sc-Er-Zr alloy during aging at 600 degrees C was investigated. It was found that Sc atoms segregate at dislocations, and two different structures of precipitates were observed.
Article
Materials Science, Multidisciplinary
Petr Kratochvil, Robert Kral, Stanislav Danis, Josef Pesicka, Peter Minarik, Jozef Vesely
Summary: Two sets of alloys derived from FeAl iron aluminide were investigated, and their structure and properties were modified by the addition of chromium and vanadium. The B2 order of FeAl iron aluminide was retained in the modified alloys, and nanoprecipates of D0(3) structure were detected. The yield stress of the alloys increased with the increasing content of chromium and vanadium.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Proceedings Paper
Engineering, Mechanical
Xiao Zhang, Yuanding Huang, Veronika Kodetova, Martin Vlach, Norbert Hort
Summary: The influence of different alloying elements on the electrical resistivity of binary magnesium alloys was investigated. It was found that Gd had the largest influence on resistivity, while Zn had the lowest. Heat treatments and isothermal aging showed that resistivity increased with T4 treatment and decreased with aging due to the depletion of solute atoms and the formation of intermetallic phases. A phenomenological formula was used to describe the relationship between resistivity and the volume fraction of precipitates, allowing resistivity to be used as a quantification of precipitation kinetics in binary magnesium alloys.
MAGNESIUM TECHNOLOGY 2022
(2022)
Meeting Abstract
Chemistry, Multidisciplinary
Petr Dolezal, Elen Duverger-Nedellec, Zuzana Mickova, Petr Proschek, Ksenia Illkova, Stanislav Danis, Kristina Bartha, Pavel Javorsky
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES
(2021)
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)
