Article
Materials Science, Multidisciplinary
L. Lu, Q. W. Xia, F. Zhao, J. C. Shi, S. N. Luo, Y. Cai
Summary: By applying high strain-rate plastic deformation treatment using gas gun loading, the mechanical properties of a titanium alloy were modified, resulting in the specimen shocked at 609 m/s exhibiting the best strength-toughness tradeoff.
Article
Nanoscience & Nanotechnology
Jianxin Zhou, Hong Yang, Bin Jiang, Chao He, Zhihua Dong, Lintao Liu, Xiaojun Luo, Ying Liu, Dehui Huang, Junyao Xu, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: The mechanical properties of the GWZ1152 alloy, including ultimate tensile strength, were systematically studied at both room and high temperatures. It exhibited excellent strength at room temperature and maintained relatively high strength as the temperature increased. The outstanding heat resistance can be attributed to various factors, such as fine grain structures, certain phases, and nano-scale precipitates in the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Q. Y. Yang, Y. L. Zhou, Y. B. Tan, S. Xiang, M. Ma, F. Zhao
Summary: The effects of microstructure, texture evolution, and strengthening mechanisms on the mechanical properties of 3003 aluminum alloy during cryogenic rolling were investigated. The results show that cryogenic rolling can significantly improve the mechanical properties of the alloy by enhancing dislocation strengthening and grain refinement strengthening.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiong Zhou, Qichi Le, Liang Ren, Chenglu Hu, Tong Wang, Qiyu Liao, Dandan Li, Xiaoqiang Li, Chunming Liu
Summary: This study designed multi-element synergistic strengthening Mg alloys inspired by the concept of high entropy alloys, and found the optimal composition of Mg-1.4Sn-0.93Zn-0.83Ca-0.67Mn-0.39Al (AXMZT-5), which exhibits high strength and elongation. The fine-grained structure, residual dislocations, and uniformly distributed nanoparticles were identified as contributing factors to the high yield strength of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Xiaofeng Li, Yinghao Feng, Xu Wang, Huiqi Xie, Xiaohui Yang, Bin Liu, Yuankui Cao
Summary: In this study, AlCrFeNiMnx high-entropy alloy coatings were successfully prepared on a copper substrate by laser cladding, with the addition of Mn leading to refined grains and improved mechanical properties, especially when the Mn content was 0.5.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Dalibor Viderscak, Zdravko Schauperl, Sanja Solic, Amir Catic, Matjaz Godec, Aleksandra Kocijan, Irena Paulin, Crtomir Donik
Summary: This study compares the material properties and microstructures of three commercially available Co-Cr dental alloys produced from three different LPBF machines, revealing significant differences in mechanical properties among them. The research shows that LPBF-prepared Co-Cr dental alloys exhibit distinct variations in microstructures, leading to differences in mechanical properties.
Article
Chemistry, Physical
Xinsheng Huang, Mingzhe Bian, Isao Nakatsugawa, Yasumasa Chino, Masahiko Sato, Kazumasa Yamazaki, Futoshi Kido, Hironori Ueda, Masashi Inoue
Summary: The study found that increasing the manganese content can significantly enhance the yield strength of Mg-3Zn-0.5Ca-0.5Al-xMn alloy, but further increasing to 1.5 wt% manganese content does not contribute to further strengthening. However, the alloy with 1 wt% manganese added achieved high strength, high formability, and improved thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
P. Emadi, B. Andilab, K. Borodianskiy, C. Ravindran
Summary: The use of lightweight alloys, such as magnesium, is crucial for improving fuel efficiency and reducing emissions in automobiles, as well as increasing the range of electric vehicles. This study investigated the effects of SiC nanoparticles on the microstructure and mechanical properties of Mg-Al-Zn-Mn alloy composites. The addition of SiC resulted in significant grain refinement, more uniform phase dispersion, and improved tensile strength, making it a promising material for strengthening light alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mingwang Xie, Wei Huang, Huiming Chen, Liukui Gong, Weibin Xie, Hang Wang, Bin Yang
Summary: This study experimentally investigated the microstructural evolution and strengthening mechanisms of pure copper and Cu-Ag alloys subjected to cold rolling. The results showed that dislocation strengthening and boundary strengthening were the dominant mechanisms in cold-rolled Cu-Ag alloys, with the addition of silver leading to higher steady-state strength due to increased concentration of dislocations and subgrain boundaries, and a larger volume fraction of high-strength eutectic colonies in Cu-15Ag compared to Cu-10Ag.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Wei Chen, Guijuan Gao, Xiangpeng Meng, Xiaojun Zhao, Yanbin Jiang, Meng Wang, Zhou Li, Lairong Xiao
Summary: A dual-phase reinforced Cu-0.75 wt% Al2O3-0.75 wt% TiB2 composite ingot was prepared by liquid phase in-situ reaction casting method and processed by hot rolling and cold rolling. The microstructure and property evolution of the composite during processing were investigated, and the strengthening mechanism was determined. Liquid phase in-situ reaction casting combined with large-deformation rolling is a promising process for the preparation of dual-phase reinforced dispersion strengthened copper matrix composite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Danni Yang, Yong Liu, Nan Qu, Tianyi Han, Mingqing Liao, Zhonghong Lai, Jingchuan Zhu
Summary: The effect of fabrication methods on microstructures, mechanical properties, and strengthening mechanisms of high-entropy alloys was systematically studied. Different fabrication methods have little effect on the main phase compositions of Fe0.25CrNiAl MEA, but significant impacts on microstructures, mechanical properties, and strengthening mechanisms were observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Mouxin Wu, Jihua Chen, Hongge Yan, Weijun Xia, Bin Su, Yifu Deng, Yu Shen
Summary: This study investigated the effect of Ca concentration on the microstructure, mechanical properties, and thermal conductivity of Mg-2Ga-xCa (x = 0, 0.2, 0.4, and 0.8 wt.%) alloys at room temperature. Increase in Ca content led to a decrease in grain size and volume fraction of recrystallized grains, resulting in increased yield strength. However, it also caused an increase in the number and size of second phase particles, leading to reduced plasticity. Minor Ca additions (0.2% and 0.4%) had no significant effect on thermal conductivity, but 0.8% Ca addition significantly improved the thermal conductivity of both as-cast and as-extruded alloys. The as-extruded Mg-2Ga-0.8Ca alloy exhibited a tensile yield strength of 244 MPa and a thermal conductivity of 135.5 W·m-1·K-1. It is suggested that Mg alloys with high strength and high thermal conductivity can be designed by selecting appropriate alloying elements to form precipitates instead of dissolving in the Mg matrix.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Chongchen Xiang, Zhuo Huang, Zijian Wang, Hanlin Ding, Shun Xu
Summary: In this paper, Cu alloying was used to study Mg-Al-Ca-Mn-Cu magnesium alloys, aiming to develop magnesium alloys with higher heat conduction. The mechanical properties and thermal conductivity of the alloys were evaluated simultaneously due to the addition of Cu, meeting the requirements of developing high-strength and high-conductivity magnesium alloys. Compared with the commercial AZ31 magnesium alloy, the strength and plasticity of the alloys were improved through fine grain strengthening. Meanwhile, the amount of solid solution atoms in the alloy decreased and the content of the second phase particles increased, leading to a reduced degree of lattice distortion. On the other hand, the Cu element provided a large amount of free electrons for heat transfer, resulting in high thermal conductivity for the alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Engineering, Manufacturing
Yang Li, Wenbin Kan, Yanming Zhang, Mingzhi Li, Xiaoyu Liang, Yefeng Yu, Feng Lin
Summary: This study successfully prepared IN738LC superalloy specimens using Electron Beam Selective Melting, established a defect-free criterion, and determined a processing window with a proper energy density. The research identified the strengthening and fracture mechanisms of critical size gamma' phases and carbides at different temperatures, as well as different fracture mechanisms in PBD and OBD specimens through tensile tests and fractographic analyses.
ADDITIVE MANUFACTURING
(2021)
Article
Metallurgy & Metallurgical Engineering
M. Eddahbi, M. A. Monge, A. Munoz, O. J. Dura, B. Savoini
Summary: A new oxide dispersion strengthened Cu-Cr-Zr material was successfully processed via mechanical alloying and hot isostatic pressing, with a fine dispersion of yttria particles in the Cu matrix. The microstructure revealed the coexistence of zones with low and high density of precipitates/particles, showing different characteristics in terms of grain size and distribution.
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)