Article
Metallurgy & Metallurgical Engineering
Zhi-wei Jiang, Dong-di Yin, You-fu Wan, Ran Ni, Hao Zhou, Jiang Zheng, Qu-dong Wang
Summary: This study investigated the operating slip modes and inhomogeneous plastic deformation of a high-performance cast Mg-10Gd-3Y-0.5Zr alloy during room-temperature compression. The results showed that the main active slip modes were basal < a > slip, followed by prismatic < a > slip, second-order pyramidal < c+a > slip, and first-order pyramidal < a > slip. It was observed that some hard-oriented slip systems were also active, despite their low Schmid factor values.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Nanoscience & Nanotechnology
Yang Chen, Qinghang Wang, Haowei Zhai, Lixin Huang, Bin Jiang, Yong Mao, Junjie He
Summary: The deformation mechanisms of the Mg-3Bi-1Ca alloy were investigated during room-temperature tension. Basal slips dominated the early stage deformation, while non-basal slips and {10-12} extension twinning increased with strain. The deformation modes became stable in the later stages and the strain distribution became uniform. The VPSC modeling and TEM observations supported the experimental results. The presence of geometrically necessary dislocations and basal screw dislocations further contributed to strain hardening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
S. W. Zong, X. J. You, J. Yang, J. Yang, C. Y. Dan, L. Jin, Q. W. Shi, H. W. Wang, Z. Chen
Summary: An in-situ tensile test of Al-6wt.%Mg alloy was conducted to investigate the relationship between slip transmission and fracture behavior. Detailed analysis of 1400 grain boundaries (GBs) was performed using in-situ electron backscatter diffraction. Three slip transmission parameters were analyzed to characterize dislocation-GBs interactions. Both intergranular and intragranular fracture were observed, with intergranular fractures occurring at slip-blocked GBs and intragranular fractures coinciding with grains having observed slip transmission.
SCRIPTA MATERIALIA
(2023)
Article
Metallurgy & Metallurgical Engineering
Ehsan Bahrami Motlagh, Peter A. Lynch, Thomas Dorin, Pavel Cizek, Alireza Ghaderi, Matthew R. Barnett, Sitarama R. Kada
Summary: In the Mg-7Sn-3Zn-0.04Na alloy, the critical shear stress for achieving 5% twinning is increased by the presence of 7% of Sn and by the presence of particles formed after 10 hours of aging. The evolution of twin volume fraction with plastic strain is similar in both non-aged and aged conditions, indicating precipitation hardening is particularly sensitive to relaxation effects.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Umer Masood Chaudry, Yeonju Noh, Kotiba Hamad, Tea-Sung Jun
Summary: The microstructural evolution and slip activity in pure Mg and AZX211 alloy during deformation at room and cryogenic temperatures were systematically investigated. The results showed that AZX211 exhibited exceptional strength/ductility synergy and superior ductility compared to pure Mg at different temperatures, attributed to grain refinement, texture softening, and Ca-containing second phase particles. Analysis of the slip modes revealed higher activities of basal and prismatic slip in AZX211, while pyramidal dislocation slip was promoted in pure Mg at low deformation temperature.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Yuxiu Zhang, Yibing Li, Qinghuan Huo
Summary: This study investigated the effects of grain size on the compressive creep behavior of a Mg-10.5 wt%Y alloy. It was found that the decrease in grain size led to a deterioration in creep resistance. Different creep mechanisms were observed in samples with different grain sizes, and precipitate-free zones were observed on grain boundaries. The fine-grained samples exhibited poor creep resistance, even without grain boundary sliding.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Engineering, Mechanical
Jing Xu, Bo Guan, Yunchang Xin, Xiao Li, Peidong Wu, Xiaoxu Huang, Qing Liu
Summary: This study systematically investigated the mechanism by which Li additions induce a more homogeneous deformation in Mg. The results showed that the addition of Li dramatically reduced the critical resolved shear stress of pyramidal (c+a) slip, facilitating easy and uniform deformation propagation and improving deformation homogeneity.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Nanoscience & Nanotechnology
Gukin Han, Yeonju Noh, Umer Masood Chaudry, Sung Hyuk Park, Kotiba Hamad, Tea-Sung Jun
Summary: The study found that Mg-0.5Ca alloy exhibits temperature-insensitive hardening behavior, while pronounced twinning activity was observed in pure Mg when deformed at low temperatures. The microstructure of Mg-0.5Ca helps reduce twinning behavior, resulting in its hardening behavior being temperature-dependent.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ming Li, Xu Wang, Zhengbing Xiao, Yu Liu, Yuanchun Huang
Summary: The effect of precipitation on the slip activities of Mg-Gd-Y-Zn-Zr alloys was quantitatively investigated. It was found that the beta' precipitates reduced the frequency and number of grains with slip traces, resulting in precipitate-hardening behavior. Plastic inhomogeneity and solute RE atoms also influenced the slip activities.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Tianxu Zheng, Yaobo Hu, Chao Zhang, Tianshuo Zhao, Fusheng Pan, Aitao Tang
Summary: The high ductility of the Mg-2Gd-0.4Zr alloy at room temperature is attributed to the rare earth texture, higher proportion of non-basal slip, high grain boundary strength, and synergy between twinning and dislocation. Local strain compatibility may also contribute to its high ductility.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Shuaishuai Liu, Jingjing Zhang, Hong Yang, Xiang Chen, Guangsheng Huang, Aitao Tang, Xianhua Chen, Bin Jiang, Fusheng Pan
Summary: In this study, a Mg-13Gd alloy sheet was fabricated through hot extrusion combined with aging prior to extrusion treatment, showing a combination of strength and ductility attributed to various factors such as the synergy of heterogeneous texture between coarse and fine grains, elevated heterogeneous deformation-induced strengthening and hardening, pre-existing precipitates, and dynamic generation of nanoscale chain-like precipitates during deformation. The findings provide guidance for designing magnesium-rare earth alloys with excellent strength and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
S. S. Dash, D. J. Li, X. Q. Zeng, D. Y. Li, D. L. Chen
Summary: In this study, the micro-deformation mechanisms in an Al-Si cast alloy under stepwise compressive loading were investigated using EBSD and slip trace analyses. The presence of heterogeneous microstructural features significantly influenced the slip trace characteristics. Four types of slip traces in primary α-Al grains were identified, revealing the nature of dislocation motion and the extent of deformation difficulty associated with grain orientations and eutectic Si particles. Crystallographic factors were analyzed to understand the deformation behavior of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Mechanical
D. D. Yin, C. J. Boehlert, L. J. Long, G. H. Huang, H. Zhou, J. Zheng, Q. D. Wang
Summary: The addition of different concentrations of Y significantly affected the mechanical properties, grain-scale slip activity, and orientation heterogeneity of extruded Mg alloys during tension and compression. Increasing Y content led to noticeable changes in slip activity, while tension-compression asymmetry also showed variations.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Materials Science, Multidisciplinary
Srinivasan Nagarajan, Roopam Jain, N. P. Gurao
Summary: The lattice rotation behavior of Al-4%Mg alloy under tensile deformation was studied using in-situ electron backscatter diffraction. The rotation of grains is influenced by the orientation of neighbors, second phase particles, and the local deformation state. The rotation path is controlled by microstructural relationships, while local reorientations and disruptions in slip activity affect the rotation rate.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Abbas Jamali, Anxin Ma, Javier LLorca
Summary: The deformation and fatigue crack nucleation mechanisms in a textured AZ31B-O Mg alloy were investigated using slip trace analysis and secondary electron microscopy. The results showed that the localization of deformation in different grains led to the nucleation of fatigue cracks along specific slip bands or twin boundaries. Grain boundary cracks were present in all cases but were not critical for fatigue failure. This study provides valuable information for evaluating the influence of microstructural features on the fatigue life of Mg alloys and for simulating their fatigue behavior using fatigue indicator parameters.
Article
Engineering, Mechanical
D. D. Yin, C. J. Boehlert, L. J. Long, G. H. Huang, H. Zhou, J. Zheng, Q. D. Wang
Summary: The addition of different concentrations of Y significantly affected the mechanical properties, grain-scale slip activity, and orientation heterogeneity of extruded Mg alloys during tension and compression. Increasing Y content led to noticeable changes in slip activity, while tension-compression asymmetry also showed variations.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Materials Science, Multidisciplinary
Y. Q. Chai, C. J. Boehlert, Y. F. Wan, G. H. Huang, H. Zhou, J. Zheng, Q. D. Wang, D. D. Yin
Summary: The study found that surface twins in a strongly basal-textured Mg sheet deformed under tension exhibit tension twins, with a significant number showing negative Schmid factor and Luster-Morris parameter values. The twinning behavior was more dependent on local conditions than globally applied stress, limiting correlations between m and m'.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Lirong Xiao, Xuefei Chen, Kang Wei, Yi Liu, Dongdi Yin, Zhaohua Hu, Hao Zhou, Yuntian Zhu
Summary: Interfacial segregation, particularly with the assistance of Ag, can enhance the thermal-mechanical stability of nanocrystalline Mg alloys by promoting the formation of a high proportion of sub-grain boundaries during conventional rolling. The segregation structure is influenced by dislocation configurations and strain fields, which ultimately contribute to improving the stability of interfaces.
SCRIPTA MATERIALIA
(2021)
Article
Metallurgy & Metallurgical Engineering
W. Yang, G. F. Quan, B. Ji, Y. F. Wan, H. Zhou, J. Zheng, D. D. Yin
Summary: The microstructure, texture, and mechanical properties of Mg-xY alloys during ECAP were studied. After ECAP, the texture of the alloys weakened and the grain size decreased. With proper ECAP process, the strength and elongation of the alloys could be improved simultaneously.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Lirong Xiao, Xuefei Chen, Huiyan Ning, Ping Jiang, Yi Liu, Bin Chen, Dongdi Yin, Hao Zhou, Yuntian Zhu
Summary: In Mg-Gd-Y-Ag alloy, high temperature brittleness may occur due to weakened grain boundaries caused by segregated interfacial compounds.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Qi Zeng, Yingbo Zhang, Kangning Li, Ye Zhuang, Jiaheng Li, Yong J. Yuan, Dongdi Yin
Summary: The combination of semisolid and hot extrusion processing was used to refine the icosahedral quasicrystalline phase in an extruded Mg alloy. The semisolid isothermal heat treatment transformed the micron-sized I-phase particles into nano lamellar eutectic. The subsequent hot extrusion further broke the lamellar eutectic phases into uniformly dispersed nanoscale I-phase particles, resulting in a significantly refined matrix microstructure and an unusual texture component.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
R. Ni, Z. W. Jiang, D. D. Yin, W. Yang, H. Zhou, J. Zheng, Q. D. Wang
Summary: The study investigated the effects of precipitates on individual slip activities and plastic heterogeneity during room temperature compression of Mg-10Y sheets. It was found that after peak-aged treatment, the frequency of basal slip increased while pyramidal slips significantly decreased. Most activated slip systems had large normalized Schmid factors, but there were also hard-oriented slip systems, indicating local stress deviation.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Tianjiao Li, Jiang Zheng, Haoge Shou, Rong Shi, Yongfa Zhang, Guilan Wen, Kang Huang, Dongdi Yin, Jinsong Rao
Summary: This study quantitatively and statistically investigated the effects of 3% Y addition on the deformation modes and transferability of Mg sheets during strain-controlled tension-compression low-cycle fatigue at room temperature. The results showed that Mg-3Y alloy exhibited enhanced activity of various slip systems and lower twinning-detwinning activity compared to pure Mg, and it had a higher likelihood of slip transfer.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Rong Shi, Jiang Zheng, Tianjiao Li, Haoge Shou, Dongdi Yin, Jinsong Rao
Summary: In this study, the influences of texture on the fatigue behavior and cracking modes of magnesium alloy were investigated. The results show that the deformation modes and cracking modes are closely related to the texture. The cyclic deformation-mode transitions and the factors governing microcrack nucleation were analyzed.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Review
Metallurgy & Metallurgical Engineering
Fei Xing, Shang Li, Dongdi Yin, Jichang Xie, Zhou Xiang, Ming Liu, Ulrike Ritz
Summary: Traditional orthopedic metal implants like titanium and cobalt-chromium alloys cannot degrade in vivo, leading to bone loss. In contrast, biodegradable magnesium alloys, with characteristics such as low density and good biocompatibility, are gaining attention in orthopedic fixation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Tianjiao Li, Jinsong Rao, Jiang Zheng, Dongdi Yin, Haoge Shou, Yongfa Zhang, Rong Shi, Weichao Jing, Lihong Xia
Summary: In this study, an obvious in-plane anisotropy of cyclic deformation behavior was observed in an extruded Mg-3Y alloy sheet during strain-controlled tension-compression low-cycle fatigue. The extrusion direction samples displayed better fatigue resistance with almost symmetrical hysteresis loops and longer fatigue life compared with the transverse direction samples. The influences of texture on the deformation modes, cracking modes, and mechanical behavior of Mg-Y alloy sheets under cyclic loading were studied quantitatively and statistically.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Ying Zeng, Kexin Sun, Xiaoying Qian, Alec Davis, Yuan Yuan, Bin Jiang, Yuanding Huang, Dongdi Yin
Summary: By tailoring precipitates, the elevated-temperature strength of Mg-Sn alloys can be improved, and the strengthening mechanism of the alloy was revealed. The formed Sn3Y5 nanoparticles in Mg-Sn-Y alloys can effectively inhibit the propagation of grain boundary cracks and hinder the dislocation motion, resulting in superior elevated-temperature strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Dongdi Yin, Shupeng Li, Kexin Sun, Ruihao Fu, Yingbo Zhang, Bin Jiang, Yuanding Huang, Ying Zeng
Summary: The newly developed Mg-Y-Sn extrusions, prepared by adding Sn to Mg-6Y, exhibit superior elevated-temperature strength. The addition of Sn introduces thermal-stable micron/nano-scale precipitates. Mg-6Y-1.5Sn, with more nano-scale precipitates, demonstrates better elevated-temperature strength. This enhancement is attributed to the combined effect of thermal-stable multiscale precipitates and grain structures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ying Zeng, Xunfei Xiong, Xiaoying Qian, Dabiao Xia, Xin Shang, Bin Jiang, Dongdi Yin
Summary: A double extrusion process with variable speed and partially substituted yttrium for Sn was proposed to improve the T-C asymmetry of Mg-2.5Sn alloy. The result showed that the individual double extrusion or partial substitution of Sn by Y slightly refined the grains of Mg-2.5Sn alloy and improved the T-C asymmetry. When combining the above two factors, the double-extruded Mg-Sn-Y alloys obtained fine grains and gained a T-C yield symmetry. By tailoring the extrusion speed, the grain size of double-extruded Mg-Sn-Y further reduced and turned to be a reversed T-C asymmetry.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Metallurgy & Metallurgical Engineering
Yan-qin Chai, Dong-di Yin, Shen Hua, Guang-hao Huang, Hao Zhou, Jiang Zheng, Qu-dong Wang
Summary: This study statistically investigated the influence of Y content on the grain-scale twinning behavior in Mg-Y alloys. It was found that the anomalous twinning behavior was more pronounced under tension, and this trend was enhanced with increasing Y content. However, the opposite trend was observed under compression. Furthermore, the fractions of anomalous twinning were found to be correlated with the maximum Schmid factors of basal slip and prismatic slip in the corresponding parent grains.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
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)