Article
Materials Science, Multidisciplinary
Ming Gao, Zheng Ma, Iniobong P. Etim, Li-Li Tan, Ke Yang
Summary: The study aimed to investigate the influence of microstructural evolution on mechanical and corrosion properties of Mg-2Zn-0.5Nd alloy during room-temperature drawing, and found that grain refinement and texture transformation significantly affected the mechanical and corrosion resistance of the alloy.
Article
Nanoscience & Nanotechnology
Na Li, Lingwei Yang, Chuanyun Wang, M. A. Monclus, Dongfeng Shi, J. M. Molina-Aldareguia
Summary: The addition of Y element in Mg-2 wt.% Y alloy results in a more balanced deformation compared to pure Mg, with different mechanisms of deformation observed in basal slip, twin growth, and prismatic-slip favorable orientation. The high-temperature strengthening in Mg-Y alloy is mainly attributed to dislocation decomposition and Y segregation at stacking faults.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Xiaopeng Liang, Liang Kang, Huizhong Li, Ruixin Wang, Qingbo Wu, Bin Liu, Li Wang
Summary: This study investigated the mechanical properties and texture of powder metallurgy FeCoCrNiN0.07 HEA sheets under cold-rolled and different annealed conditions. It was found that the mechanical anisotropy was significantly reduced in the sheet after annealing at 750 degrees C. The main texture components and the equivalent Schmid factors were analyzed to explain the mechanical property anisotropy of the FeCoCrNiN0.07 sheet.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Hao Wang, Dianwu Zhou, Youruiling Yan, Jinshui Liu, Bo Gao
Summary: The study investigates the effects of pre-straining and subsequent annealing on the microstructure and mechanical properties of Zr-Sn-Nb-Fe zirconium alloy. It is found that pre-straining decreases basal texture intensity and grain size, while increasing work-hardening value. The annealing process weakens the basal texture, leading to decreased anisotropy and improved formability.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Chao Meng, Juntao Yang, Zhengqiang Zhang, Jianlin Yang, Weibin Zhuang, Xuelei Wang, Xin Ren, Shizhen Bai, Yongheng Jiang
Summary: The study showed that laser bionic treatment can effectively improve the mechanical properties of TIG welded magnesium alloy joints by refining grain size and adjusting crystal orientations.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Civil
Jianyu Long, Faisal Nazeer, Zhe Yang, Chuan Li
Summary: The compressive properties of Mg-6Zn wt.% (MZ-T6) magnesium alloy were studied after cross pre-compression treatment, showing significant improvements in mechanical properties due to twin-induced grain refinement and changes in texture. Loadings in different directions exhibited varying deformation behaviors and strain hardening regimes, leading to increased hardness in pre-compressed specimens compared to untreated specimens.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Crystallography
Jianhua Liu, Jie Sun, Qingqiang Chen, Laixiao Lu, Yanhua Zhao
Summary: The study found that Mg-Gd-Y alloy tubes produced using extruded bar billets and water cooling method exhibit higher yield strength and elongation due to their fine grain size, uniform small grains, and randomized texture.
Article
Materials Science, Multidisciplinary
Zhe Liu, Zhiyu Fan, Li Liu, Shu Miao, Zhicheng Lin, Chungui Wang, Yunqiang Zhao, Renlong Xin, Chunlin Dong
Summary: In this study, 1 mm-thick AZ31 magnesium alloy sheets were joined by refill friction stir spot welding. The metallurgical features, microstructure, texture, and mechanical response of the spot-welded joints were investigated, and the effect of welding parameters on joint performance was evaluated. The results showed that the highest lap shear strength was achieved with a rotational speed of 1500 rpm and a plunge depth of 1.4 mm. A fine-grain structure was observed in the stir zone, and the grain size decreased with lower rotational speed and plunge depth. Furthermore, strain localization was observed during tensile deformation in the spot weld, and the mechanism behind this phenomenon was discussed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Haixuan Wang, Wenzhen Chen, Wencong Zhang, Daqing Fang, Songhui Wang, Wenke Wang
Summary: Through the compression-extrusion process, a fine grain and weak texture symmetric ZK61 magnesium alloy rod was achieved. The compression stage activated {10-12} twinning deformation leading to significant grain refinement, while in the extrusion stage, twinning gradually decreased and basal slip dominated the deformation, resulting in the formation of a weak texture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yi Zhang, Jin Ma, Qiang Wang, Yongbiao Yang, Mingjie Zhu, Penglai Jia, Yuhao Duan, Zhimin Zhang
Summary: Changing the extrusion direction of the initial blank in the extrusion process of 7075 Al alloy significantly affects the mechanical properties and microstructure of the formed plates. Secondary extrusion deformation noticeably reduces the anisotropy of mechanical properties in both samples. The yield strength and ultimate tensile strength anisotropy of the ED90 sample are lower than those of the ED0 sample, but the plastic anisotropy is slightly higher. Additionally, the high proportion of recrystallized grains and low texture strength in the ED90 sample result in similar Schmid factors in all three directions. Both samples exhibit ductile fracture, but with slight differences in dimple morphology and cleavage plane size.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Physical
Jinhua Peng, Zhen Zhang, Huanhuan Chen, Chang Long, Yong Wu, Ji'an Huang, Wei Zhou, Yucheng Wu
Summary: This study systematically investigates the texture-induced anisotropy of magnesium, showing that the microstructure, texture, and mechanical properties vary with the sample direction. Different deformation mechanisms are favored by grains at different angles, with tensile and compression yield planes being fitted by linear and exponential equations, respectively. Mechanical properties and strain hardening anisotropy are discussed through comparative analyses between experimental and calculated results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Tian -le Liu, Hao-ran Li, Yun-long Ma, Jin-feng Li, Dan -yang Liu, Ding-ding Lu, You-jie Guo
Summary: By controlling the grain structure, the mechanical property anisotropy of the 2195 Al-Li alloy can be weakened through plastic deformation. The cold-rolled samples with fine equiaxed grain structure have higher yield strength and relatively weaker anisotropy compared to the samples through final temperature-controlled rolling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Lei Liu, Naiguang Wang, Yunfeng Liu, Chuming Liu
Summary: A large-size AZ80-Ag magnesium alloy support beam was fabricated via isothermal semi-closed die forging (ISDF). Its microstructure features and mechanical properties with or without subsequent aging were systematically characterized. The results indicate that the ISDF at 400 degrees C creates strong basal texture and leads to an obvious mechanical anisotropy between the height direction (HD) and transverse direction (TD). Subsequent aging at 175 degrees C can promote the discontinuous or continuous precipitation of 13-Mg17Al12 phases without changing the texture mode, whilst the mechanical anisotropy is significantly weakened as the difference in yield strength between TD and HD decreases from 71 MPa to 6 MPa after aging for 12 h. Such aging-induced anisotropy-weakening effect results from the fact that the HD is a soft direction for basal slip and the precipitate-strengthening related to 13-Mg17Al12 is more significant in this direction.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Xinsheng Huang, Mingzhe Bian, Isao Nakatsugawa, Yasumasa Chino, Masahiko Sato, Kazumasa Yamazaki, Futoshi Kido, Hironori Ueda, Masashi Inoue
Summary: The influences of Al content on microstructure, mechanical properties, stretch formability, and thermal conductivity of Mg-1.5Zn-0.3Ca-xAl-0.2Mn alloys were investigated. It was found that the change in the Al content affected the texture and morphology of the alloys. The addition of Al resulted in improved stretch formability and decreased thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Zhong-Zheng Jin, Xiao Ma, Min Zha, Kai Guan, Hui-Yuan Wang, Jian-Gang Ma, Yi-Chun Liu
Summary: A near-isotropic Mg-4.5Al-1.5Sn-0.5Ca-0.2Mn alloy with a low mechanical anisotropy and balanced combination of yield strength and ductility was developed, showing potential for various engineering applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Jiaxiang Li, Qinghuan Huo, Chunyu Wang, Yuxiu Zhang, Zhirou Zhang, Gang Feng, Xuyue Yang
Summary: The results of the study demonstrated a clear tension-compression asymmetry in the creep behavior of the alloy under tensile and compressive creep loading along the rolling direction and the normal direction. Twinning played a role in deteriorating the creep resistance of certain samples and causing asymmetrical behavior in the results. The T-RD sample showed the best creep resistance, while the C-ND sample followed, with the C-RD and T-ND samples showing similarly poor creep resistance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Yuxiu Zhang, Tao Chen, Jie Kuang, Qinghuan Huo
Summary: This work investigated the compressive creep behavior of a hot-extruded Mg-6Al-1Zn alloy rod and discovered that the dense twin structure developed during creep could enhance the work hardening capacity, thereby increasing the creep resistance.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Shiqi Li, Qinghuan Huo, Sijia Hu, Chunyu Wang, Zhirou Zhang, Yuxiu Zhang, Tao Chen, Xuyue Yang
Summary: The effects of original orientations on the dynamic recrystallization behaviors of a hot-rolled Mg-1.0wt% Ca plate were investigated. It was found that dynamic recrystallization occurred more easily in the normal direction sample at the same temperature. As the temperature increased, the area fraction and size of the dynamic recrystallized grains improved faster in the rolling direction sample. The Mg-1.0wt%Ca alloy significantly postponed both the continuous and discontinuous dynamic recrystallization processes compared to commercial Mg alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Zhirou Zhang, Qinghuan Huo, Yuxiu Zhang, Yang He, Hiromi Nagaumi, Xuyue Yang
Summary: The individual effects of Y and Nd elements on the precipitate-free zone (PFZ) development and the dislocation creep mechanism of a Mg-4Y-3.5Nd alloy were investigated. Different treatments were applied to the samples, and the creep process was analyzed. The addition of Y and Nd elements diversified the slip types and affected the widening rate of PFZs in the alloy.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Biaobiao Yang, Jun Wang, Yunping Li, Matthew Barnett, Javier LLorca
Summary: A dual-textured Mg-6.5 Zn alloy with limited yield asymmetry is studied. The deformation mechanisms responsible for the behavior are analyzed and it is found that compressive deformation is accommodated by basal slip and extension twinning, while tensile deformation promotes basal and nonbasal slip. The contribution of rotated grains leads to similar values of the yield strength in tension and compression.
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Lu Luo, Yuxiu Zhang, Zhenyu Xiao, Shiqi Li, Hiromi Nagaumi, Xuyue Yang
Summary: Age-hardening has been considered as an efficient way to enhance the creep resistance, but it unexpectedly deteriorated the creep resistance of a hot-rolled Mg-8wt%Gd alloy in this study. The precipitates formed during peak-aging treatment promoted the cracking of grain boundaries, resulting in the worsening of creep resistance. Meanwhile, the precipitation strengthening gradually reduced, leading to the acceleration of creep rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Sijia Hu, Qinghuan Huo, Chunyu Wang, Tao Chen, Shiqi Li, Xuyue Yang
Summary: Tensile creep tests were conducted on the as-solutioned (AS) and as-aged (AA) samples of a commercial ZK60 alloy in the normal direction. The AA sample showed a higher 0.2% proof stress but poorer creep resistance compared to the AS sample. Basal slip, pyramidal slip, and twinning controlled the creep behavior in the AA sample, while basal slip and twinning were responsible for creep deformation in the AS sample. The poorer creep resistance in the AA sample was attributed to accelerated creep deformation caused by pyramidal dislocations and stress concentration induced by basal dislocations at twin boundaries.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Tao Chen, Qinghuan Huo, Sijia Hu, Chunyu Wang, Yuxiu Zhang, Zhirou Zhang, Shiqi Li, Xuyue Yang
Summary: In this study, the effects of Ca, Sn, and Zn additions on the creep resistance of Mg-Al-based alloys at 453 K were systematically investigated. The highest yield strength was observed in Mg-6Al-1Zn (AZ61) alloy, while the best creep resistance was achieved in Mg-6Al-1Ca (AX61) alloy, followed by Mg-6Al-1Zn (AZ61) and Mg-6Al-1Sn (AT61) alloys. It is recommended to add Ca element into Mg-Al-based alloys to improve creep resistance by controlling solution strengthening and dislocation morphologies.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yi Yang, Veronique Massardier, Mahmoud Reza Ghandehari Ferdowsi, Lu Jiang, Jun Wang, Thomas Dorin, Sitarama R. Kada, Matthew R. Barnett, Michel Perez
Summary: This study provides new insights into the precipitation kinetics in Mg-Zn alloys. Through the characterization of the evolution of Zn solute, precipitate size, and volume fraction using various techniques, the experimental results are supported by a precipitation model based on classical nucleation and growth theories. The study reveals the prevalence of rod-shaped precipitates in the early aging stage and plate-shaped precipitates in the overaging stage.
Article
Engineering, Mechanical
Guoming Zheng, Bin Tang, Songkuan Zhao, Jun Wang, Yizhen Xie, Xiaofei Chen, William Yi Wang, Dong Liu, Rui Yang, Jinshan Li
Summary: Designing a novel microstructure with higher strength-ductility for lightweight TiAl alloys is crucial. This study demonstrates that introducing an appropriate amount of plasticizing structures (PM) can enhance the strength-ductility synergy of TiAl and potentially other brittle materials.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Shiqi Li, Tao Chen, Sijia Hu, Qinghuan Huo
Summary: This short communication discusses the grain growth behaviors and static recrystallization mechanisms of Mg-1.0 wt%Ca sheet after hot-compression along rolling direction (RD) and normal direction (ND). The findings indicate that Mg-1.0 wt%Ca alloy demonstrates excellent thermal stability and potential for serving as heat-resistant products.
Article
Nanoscience & Nanotechnology
Xiang Jiang, Sijia Hu, Limin Wang, Xiaohu Liu, Xuyue Yang, Qinghuan Huo
Summary: The dependence of dynamic recrystallization behavior of magnesium on the Gd content was studied in this research. The study showed that adding Gd content significantly delayed the progress of recrystallization and influenced the dominant recrystallization mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Biaobiao Yang, Jun Wang, Yunping Li, Matthew Barnett, Javier LLorca
Summary: The transformation from compression twins (CT) to double twins (DT) was studied in a dual-textured Mg-6.5%Zn(wt.) alloy during deformation along the extrusion axis. After 7.3% compression, 85% of CT transformed to DT. However, during tension, the transformation ratio dropped to 22% and 36% despite higher applied stresses and strains. The differences in DT activity could not be explained by the Schmid factor, indicating that the activation of non-basal slip plays a role in suppressing the CT to DT transformation.
SCRIPTA MATERIALIA
(2023)
Editorial Material
Chemistry, Physical
Qinghuan Huo
Article
Chemistry, Physical
Kelong Zhang, Huizhong Li, Xiaopeng Liang, Zhi Chen, Hui Tao, Yixuan Che, Li Li, Zixiang Luo, Qinghuan Huo
Summary: AZ80A Mg alloys with different fractions of continuous and discontinuous precipitate regions exhibited varying tensile properties and fracture behaviors. Increasing the fraction of discontinuous precipitate regions improved the yield strength and tensile strength at room temperature, but decreased elongation and tensile strength at high temperatures. The precipitation-strengthening effects in the continuous and discontinuous precipitate regions played different roles in determining the resultant tensile properties. Micro-cracks were predominantly found in the continuous precipitate regions at room temperature, while micro-voids were more likely to form in the discontinuous precipitate regions at high temperatures.
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)
