Article
Nanoscience & Nanotechnology
Shengshi Zhao, Yujun Xu, Chuangang Geng, Xiaoping Lin, Qin Tang, Yun Dong
Summary: The microstructure evolution of Mg-6.0Gd-0.5Y alloy during tensile tests at different temperatures was investigated using EBSD and HRTEM. It was found that the high-temperature strength of the alloy is attributed to delayed dynamic recrystallization, compression twins, and stacking faults, while the superior plasticity is related to high crystal orientation concentration, tensile twins activation, and non-basal slip.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Cunlong Wang, Hongtao Li, Qiyang He, Jili Wu, Guohua Wu, Wenjiang Ding
Summary: The paper reports a comparative study on the influence of environmental temperature on microstructural evolution and tensile mechanical behaviors of squeeze cast and gravity cast magnesium alloys. The results show that the ultimate tensile strength and elongation of the squeeze cast alloy are improved compared to the gravity cast alloy. The abnormal increase in strength within a certain elevated temperature range is attributed to insufficient strain hardening at lower temperatures, restricting further plastic deformation.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Cen Huang, Chuming Liu, Shunong Jiang, Yingchun Wan
Summary: The study systematically explored the effects of silver addition on the microstructural and mechanical properties of the Mg-6Gd-3Y-1Zn-0.4Zr alloy. The addition of silver was found to enhance age-hardening response and improve tensile properties, especially in the early aging stage. The alloy with silver showed higher ultimate tensile strength, yield strength, and elongation to failure compared to the silver-free alloy at both room and elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Chunquan Liu, Xianhua Chen, Yaobo Hu, Wei Zhang, Yusheng Zhang, Jianbo Li, Fusheng Pan
Summary: This study prepares a gradient ultrafine-grained structure on the surface of a magnesium alloy using sliding friction treatment. The new material exhibits significantly improved yield strength and excellent ductility compared to homogeneous structures. Transmission electron microscopy and electron backscatter diffraction analyses reveal that the refined grain structure and grain orientation modification contribute to the enhanced plastic deformation ability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Ming-Xue Zhang, Cheng Wang, Shao-You Zhang, Xu Liu, Xuan Wang, Ming-Wen Ren, Hui-Yuan Wang
Summary: The addition of trace Zr improves the precipitation kinetics and age-hardening response of Al-Mg-Si alloys. It also refines the Fe-containing phases and grain size. Furthermore, the participation of Zr atoms in Mg-Si precipitates has been observed, leading to enhanced yield strength. Nano-sized (Al, Si)(3)Zr dispersoids also contribute to precipitation strengthening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Ning Su, Yujuan Wu, Qingchen Deng, Zhiyu Chang, Qianye Wu, Yanting Xue, Kun Yang, Qiang Chen, Liming Peng
Summary: The effects of Gd and Y solutes on the mechanical properties of extruded Mg-Gd(-Y)-Zn-Mn alloys were investigated in this study, showing significant improvements in strength and age-hardening response. Partial substitution of Y for Gd delayed age-hardening response but improved strength increment. The addition of Y and Gd separately enhanced age-hardening response and mechanical properties, while grain boundary (GB) sliding affected tensile strength at elevated temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Qian Zhang, Quanan Li, Xiaoya Chen, Jiaxin Zhao, Jian Bao, Ziyi Chen
Summary: In this study, the microstructure evolution and dynamic recrystallization mechanism of Mg-Gd-Y-Zr alloy under different deformation conditions were analyzed in detail. It was found that dynamic precipitation occurs prior to dynamic recrystallization, and large-size hard phase particles can induce dynamic recrystallization under high strain conditions, promoting grain refinement.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Yingjie Huang, Chuming Liu, Shunong Jiang, Yajie Ma, Yingchun Wan, Zhiyong Chen
Summary: This study investigates the microstructure, precipitation behavior, and mechanical properties of a multi-directional forged and age-treated Mg-8.9Gd-1.8Y-0.5Zr-0.2Ag (wt%) alloy. The as-aged alloy exhibits a mixed structure consisting of dislocation-induced chain-like distributed beta' phases, homogeneously distributed beta' phases, and precipitation free zones (PFZs). The alloy aged at 498 K shows the optimal combination properties of strength and ductility. However, decreasing the aging temperature to 473 K results in a significant decrease in ductility at the cost of increased strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Crystallography
Elena Lukyanova, Natalia Martynenko, Olga Rybalchenko, Tatiana Dobatkina, Irina Tarytina, Natalia Tabachkova, Georgy Rybalchenko, Nadezhda Andreeva, Sergey Dobatkin
Summary: The effect of samarium as an alloying element on hot-extruded Mg-Y-Gd-Zr alloys is investigated. It is found that samarium can enhance the hardness and accelerate the hardening process of the alloys, and it can also partially replace expensive rare-earth elements, showing potential applications in alloy production.
Article
Chemistry, Physical
Yingjie Huang, Chuming Liu, Yingchun Wan, Shunong Jiang, Yonghao Gao, Zhiyong Chen
Summary: This study investigates the effect of dislocation arrays induced beta' precipitation bands on the creep behavior in wrought Mg-8.9Gd-1.8Y-0.5Zr-0.2Ag alloy. The alloy with beta' precipitate bands shows significantly enhanced creep resistance. Pipe diffusion-controlled grain boundary sliding (GBS) is suggested as the main steady creep mechanism below 498 K, while cross-slip is suggested as the main steady creep mechanism above 498 K. The characterization indicates that the precipitate bands separate the matrix into multiple units within the grains and restrict the long-distance slip of the dislocations, thereby improving the creep resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Heqian Song, Lunyong Zhang, Zhiliang Ning, Yufeng Wang, Junying Yi, Fuyang Cao, Jianfei Sun
Summary: The study found that the surface oxidation film defect of Mg-Gd-Y-Zr alloy during solidification is related to the difference in thermal expansion coefficient and can cause the formation of bifilm defects. When the magnesium alloy melt fills the crack, Zr precipitates into crystal nucleus and Y2O3 accumulates.
Article
Metallurgy & Metallurgical Engineering
Baotian Du, Zijian Yu, Kang Shi, Ke Liu, Shubo Li, Wenbo Du
Summary: This study investigated the effects of different ageing treatments on the mechanical properties of Mg-8Gd-3Y-0.5Ag-0.5Zr alloy. The combination of 2% pre-strain and two-stage ageing treatment (P2%TSA) showed the highest strengthening effect and generated multiple composite precipitates. Unlike the traditional β' phase strengthening mechanism, the composite precipitates exhibited better combined strengthening effect in the alloy.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Yaocheng Zhang, Zheng Liu, Song Pang, Tao Meng, Yating Zhi, Yuling Xu, Lv Xiao, Ruifeng Li
Summary: The study evaluated the tensile creep behavior of GW83 alloy under different temperature and stress conditions, showing that increasing temperature and stress significantly affect the creep performance. T6 treatment can greatly improve the creep resistance of the alloy, and the tensile creep plastic deformation is mainly controlled by the applied stress.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Junkai Wang, Chuming Liu, Shunong Jiang, Guang Zeng
Summary: A large-scale Mg-6.2Gd-3.7Y-0.9Zn-0.3Zr-0.3Ag magnesium component was fabricated via DC casting, homogenization, and MDF. The microstructure, texture, and tensile properties during the MDF process were investigated. The MDF alloy with 27 passes exhibited superior mechanical properties, including a yield strength of 292 MPa, an ultimate tensile strength of 384 MPa, and an elongation of 9.0%. The improved mechanical properties in the MDF process were attributed to increased volume fraction of Mg5(Gd, Y) phases, enhanced texture, and refined a-Mg grains.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xiaoya Chen, Quanan Li, Jinglong Yan, Peijun Chen
Summary: This study systematically investigates the microstructure and high temperature mechanical properties of Mg-10Gd-3Y-xNd-0.5Zr alloy. It is found that Nd element promotes the precipitation phase and forms a new phase Mg41Nd5, while the appropriate amount of Nd refines the grain size. The Mg-10Gd-3Y-xNd-0.5Zr alloy exhibits excellent mechanical properties at both room and high temperatures, with significant ultimate tensile strengths. The main strengthening phases are p phase, p' phase, and 18-LPSO phase. Moreover, the alloy shows excellent high-temperature creep resistance and the creep mechanism changes with temperature and stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yushi Chen, Guohua Wu, Wencai Liu, Liang Zhang, Song Zhang
JOURNAL OF MATERIALS RESEARCH
(2018)
Article
Materials Science, Multidisciplinary
Wencai Liu, Shi Feng, Zhongquan Li, Jiong Zhao, Guohua Wu, Xianfei Wang, Lv Xiao, Wenjiang Ding
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
Xiaolong Zhang, Liang Zhang, Guohua Wu, Jiangwei Sun, Mian Rong, Cheng-Chii Hsieh, Yuxiang Yu
MATERIALS CHARACTERIZATION
(2018)
Article
Nanoscience & Nanotechnology
Jiashen Tao, Liang Zhang, Guohua Wu, Antao Chen, Xiaolong Zhang, Chunchang Shi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Engineering, Industrial
Xin Tong, Guoqiang You, Yan Liu, Siyuan Long, Qing Liu
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2019)
Review
Materials Science, Multidisciplinary
Le Zai, Chaoqun Zhang, Yiqiang Wang, Wei Guo, Daniel Wellmann, Xin Tong, Yingtao Tian
Article
Materials Science, Multidisciplinary
Dashi Lu, Guoqiang You, Jingchuan Luo, Yuhan Ding, Sheng Zeng, Xin Tong
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Chemistry, Applied
Xin Tong, Guoqiang You, Fanjin Yao, Mahmoud Ebrahimi, Xinyue Deng, Shokouh Attarilar
Summary: The segregation behavior of Mg-Gd alloy was investigated, and it was found that there was uneven distribution of Gd content in the ingots fabricated through resistance heating. The combined application of induction heating and mechanical stirring was able to improve the distribution homogeneity of Gd atoms.
JOURNAL OF RARE EARTHS
(2022)
Article
Materials Science, Multidisciplinary
Xin Tong, Guoqing Zhang, Guohua Wu, Liang Zhang, Yingxin Wang, Rui Jiang, Wencai Liu, Wenjiang Ding
Summary: The study investigated the microstructural evolution and mechanical properties of repaired joints in sand-cast Mg-4Y-2Nd-1Gd-0.5Zr alloy during different pre- and post-weld heat treatments, highlighting the formation mechanism of abnormal grain coarsening in the fusion zone. By applying a specific solution treatment, a repaired joint without residual eutectics or abnormal grain coarsening was successfully prepared, showing excellent comprehensive properties.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Wencai Liu, Hongjie Liu, Xin Tong, Dehao Meng, Song Pang, Lv Xiao, Longkang Jiang, Guohua Wu
Summary: The mechanical properties and fracture behavior of magnesium-rare earth (Mg-RE) sand castings were studied. It was found that the T6 treatment can improve the strength and deformation resistance of the alloy, and the initiation and propagation of cracks vary under different load conditions.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Nanoscience & Nanotechnology
Xin Tong, Guohua Wu, Mark A. Easton, Ming Sun, David H. StJohn, Rui Jiang, Fangzhou Qi
Summary: The distribution of Zr in a commercial Mg-30Zr master alloy can be modified through tungsten inert gas arc re-melting with ultra-high frequency pulses, leading to a substantial reduction in grain size. The approach allows for refinement of Zr particle size and obtaining higher contents of soluble Zr and nanoscale Zr particles. This new method proposes a new approach to the design and fabrication of high-efficiency grain refiners.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Hongjie Liu, Jia Ma, Wencai Liu, Guohua Wu, Jiawei Sun, Xin Tong, Peijun Chen
Summary: The feasibility of TIG welding of as-cast Mg-8Li-3Al-2Zn-0.5Y alloys was investigated in this study. The results showed that the welded joints had good formability and improved mechanical properties, making it suitable for welding Mg-Li alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yixiao Wang, Guohua Wu, Liang Zhang, Xin Tong, Liangbin Li, Xunman Xiong, Xiaolong Zhang, Cunlong Wang
Summary: This study compared the precipitation behavior of sand-cast Al-Li alloy under different quenching conditions and discussed the effect of quenching rates on the formation mechanisms of precipitates. It was found that rapid quenching facilitated the precipitation and refinement of precipitates, leading to improved mechanical properties. Furthermore, the alloy was found to have a lower quench sensitivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Youjie Guo, Liang Zhang, Guohua Wu, Yixiao Wang, Fangzhou Qi, Xuanxi Xu, Xin Tong, Peisen Li, Guangxiao Ren, Yingjing Geng, Liangbin Li, Xunman Xiong
Summary: This study investigates the effect of Li addition on the hot-tearing susceptibility (HTS) of Al-Cu-Li alloys and finds that the experimental results are consistent with the predictions when Li content is below 2.5 wt pct. However, high Li-containing alloys show abnormally severe HTS due to the formation of Li-rich oxide inclusions, which obstruct liquid feeding.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xin Tong, Guohua Wu, Ming Sun, Qiman Wang, Liang Zhang, Wencai Liu
Summary: In this study, the purification and grain refinement of Mg-9Gd-3Y alloy were successfully achieved simultaneously by one-step refining at a high temperature, using a self-developed compound flux. A physical model was proposed to explain the interactions between the flux and the alloy melt, and the mechanism of grain refinement was analyzed. The generated RECl3 was found to enhance the purification efficacy and improve the ductility of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
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)
