Article
Chemistry, Physical
Qiancheng Liu, Hua Fu, Wentao Wu, Lijuan Wang, Junchao Cheng, Ping Xia, Bin Gan, Min Xia, Feng Zhao
Summary: This study systematically investigates the effect of annealing temperature on the mechanical properties of a CrCoNi based medium entropy alloy (MEA). The results show that annealing at 820℃ for 1 h can achieve a heterogeneous structure with excellent combination of strength and plasticity. This study highlights the importance of annealing temperature in achieving the optimal synergy of strength and ductility in MEAs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Zuo Xu, Lixin Huang, Meng Li, Zhihua Zhu, Chunhai Liu
Summary: The influence of Mg17Al12 phase morphology on the mechanical properties of AZ80 magnesium alloy has been studied. The results show that the morphology of Mg17Al12 phase varies with aging temperature, which affects the strength and elongation of the alloy.
Article
Materials Science, Multidisciplinary
Chuanlong Xu, Lin Yuan, Haidong Fan
Summary: Molecular dynamics simulation was used to study the interaction between precipitate and {10 (1) over bar2} twin in Mg-Al alloy. The results showed that the introduction of precipitate had little effect on the formation of homogeneous and heterogeneous twins. During twin propagation, the blocking effect of precipitate depended on its size. When the length of precipitate was much larger than the thickness of twin, the twin tip was completely blocked with elastic bending occurring at the junction. During twin growth, the precipitate acted as an obstacle and a source for twinning dislocations gliding along the twin boundary. The influences of width and thickness on precipitation hardening were significantly greater than that of length.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Zhaoxin Du, Qiwei He, Ruirun Chen, Fei Liu, Jingyong Zhang, Fei Yang, Xueping Zhao, Xiaoming Cui, Jun Cheng
Summary: This study investigated the relationship between cold rolling reductions and deformation mechanisms, as well as mechanical properties, in the metastable TB8 titanium alloy. The results showed that the crystal orientation of the matrix changed with increasing reduction, leading to the activation of complex deformation mechanisms. Different reduction levels corresponded to different dominant deformation mechanisms, including dislocations, deformation twins, and kink bands. The interaction among deformation twins, kink bands, and other deformation mechanisms during cold rolling refined the matrix, affecting its strength and shape.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Gyo Myeong Lee, Jong Un Lee, Sung Hyuk Park
Summary: This study investigates the effects of post-heat treatments on microstructural characteristics, uniaxial tensile properties, and three-point bending properties of an extruded AZ80 alloy. Different heat treatments result in variations in the material's performance, mainly due to differences in grain size and precipitate amount.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
Dong-dong Zhang, Chu-ming Liu, Ying-chun Wan, Shu-nong Jiang, Gang Zeng
Summary: The microstructure, anisotropy in tensile strength and tensile creep resistance of the ring rolled AZ80-Ag alloy were investigated. It was found that the alloy exhibited higher strength along the rolling direction and higher creep resistance along the transverse direction. Creep mechanisms involving diffusional creep and dislocation climb were identified during the creep of the alloy.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
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
Chemistry, Physical
Chaojun Ke, Chenyang Wang, Xiaodong Wang
Summary: In this study, a superior medium entropy alloy (NiCoCr)(95)V-5 was successfully fabricated and the microstructure characterizations revealed that the high properties were mainly attributed to dislocation slip, interaction with high density nanoscale precipitates, and the initiation of primary and secondary deformation twinning.
Article
Chemistry, Physical
S. Pilz, A. Hariharan, F. Guenther, M. Zimmermann, A. Gebert
Summary: This study reveals the influence of omega iso precipitates on the deformation mechanisms and mechanical properties of a biomedical beta-type Ti-40Nb alloy. The results show that the fraction and size of omega iso increased with increasing aging time, leading to an increase in Young's modulus and proof stress. The active deformation mechanisms also changed with aging time, resulting in significant alterations in mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Xianwei Ren, Yuanchun Huang, Xieyi Zhang, Hao Li, Yongxing Zhao
Summary: The study shows that the magnesium alloy sheet processed through reverse shear deformation has better mechanical properties, while the sheet processed through single shear deformation leads to structural inhomogeneity and inferior mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Xuanliang Chen, Minho O, Equo Kobayashi
Summary: This study applied cyclic deformation to an Al-Mg-Cu alloy and found that it increased the strength and ductility of the alloy by introducing dislocations and promoting cluster formation. The aging behaviors of the cyclically-strengthened (CS) samples were studied, and it was found that recovery and precipitation promotion occurred regardless of pre-aging. Pre-aged CS samples showed higher strength, but interestingly, after subsequent aging, the mechanical properties of pre-aged and non-pre-aged CS samples became the same.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jinhui Wang, Lei Zhang, Peipeng Jin, Lijia Chen, Xiaoguang Yuan, Hongbin Ma
Summary: The dynamic mechanical behaviors of the as-extruded Mg-1Al-6Y alloy were investigated using split Hopkinson pressure bar (SHPB). The results revealed that the microstructures and deformation mechanisms of the extruded alloy are sensitive to the strain rates and temperatures. The yield strength and compressive strength of the alloy are improved with increasing strain rate and weakened with increasing temperature. Temperatures have a significant influence on the dynamic mechanical behaviors of Mg-1Al-6Y.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Fei Dong, Shiquan Huang, Youping Yi, Hailin He, Ke Huang, Shenglei Gao, Yanzhen Jia, Wenwen Yu
Summary: The three-step process of solution treatment, stretching deformation at cryogenic temperature, and artificial aging treatment is a potential route for fabricating complex shaped thin-walled components of aluminum alloy. Cryogenic stretching deformation in 2060 Al-Li alloy led to increased T-1 phase nucleation sites, resulting in a markedly homogeneous distribution and optimized after-aging mechanical properties with high strength. High ductility was maintained due to the alloy's high homogeneous deformation ability at cryogenic temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Xuan Zhou, Keer Li, Dingxuan Zhao, Xu Yue, Rui Li, Jixiong Liu, Xiaoxiang Wang, Wei Chen, Jinyu Zhang, Jun Sun
Summary: This study systematically investigated the mechanical properties and fracture characteristics of Ti-2.5Cu alpha-titanium alloy under cryogenic conditions. The results showed that the low-temperature samples exhibited higher strength and ductility, with a different fracture surface morphology. These properties and characteristics are closely associated with deformation twinning.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Hyun Ji Kim, Ye Jin Kim, Sung Hyuk Park
Summary: The study investigates the effects of pre-existing {10-12} extension twins on the precipitation behavior and mechanical properties of aged AZ80 material. The material with {10-12} twins exhibits a finer grain size and higher dislocation density compared to the extruded material. The presence of {10-12} twins promotes continuous precipitation and suppresses the formation of coarse precipitates at grain boundaries, resulting in improved tensile strength and elongation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Bo Song, Zhiwen Du, Ning Guo, Qingshan Yang, Fang Wang, Shengfeng Guo, Renlong Xin
Summary: This study found that reciprocating torsion can enhance yield strength in three compressive directions simultaneously, and reduce compressive anisotropy. Reciprocating torsion generates profuse dislocations and {10-12} twin boundaries to harden the micro-hardness and yield strength.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Qingshan Yang, Bin Jiang, Bo Song, Zujian Yu, Dewei He, Yanfu Chai, Jianyue Zhang, Fusheng Pan
Summary: Controlling grain orientation through twinning activity is crucial for understanding the deformation mechanism of Mg alloy sheets. Precompression can generate {10-12} twin-texture components, providing an alternative way to improve the formability of Mg alloy sheets.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Zhiwen Du, Bo Song, Ning Guo, Tingting Liu, Shengfeng Guo, Renlong Xin
Summary: The study investigated the micro-mechanism of texture evolution during free-end torsion and its influence on compressive behavior. Torsion deformation was found to generate a new twin-orientation and rotation of parent grains' c-axes towards B-fiber. This deformation significantly enhanced compressive yield strength and slightly improved plasticity, primarily due to twin formation and dislocation hardening.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Nanoscience & Nanotechnology
Y. J. Wan, Y. Zeng, Q. Zeng, B. Song, X. F. Huang, X. Y. Qian, B. Jiang
Summary: By intentionally transforming the habit planes of lath-shaped Mg2Sn precipitates in Mg-Sn alloy from basal plane to prismatic plane, the strength and toughness of the alloy were significantly enhanced, with the compressive yield strength (CYS) and compression to failure (CF) increasing by 137% and 75% respectively. This was attributed to the significant obstacle effect of the abundant prismatic laths on basal slip and twinning.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Fang Wang, Liu He, Xiangguo Zeng, Zhongpeng Qi, Bo Song, Xin Yang
Summary: This study found that the damage response of NiTi alloy is influenced by grain size, with smaller grain sizes leading to intergranular and transgranular fracture, while larger grain sizes resulted in intergranular-dominated fracture. The results also showed that as the grain size increased, stress relaxation became more complete, leading to faster void growth rate.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Huijie Wu, Yuan Li, Bo Song, Qing Li
Summary: This work reports the synthesis of porous waist drum-like alpha-Fe2O3 nanocrystals with high yield by hydrothermal method for supercapacitor application. The unique nanostructure of the nanocrystals provides fast ion/electron transfer, resulting in noticeable pseudocapacitive properties with high specific capacitance and good cycling stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Yuhang Du, Deyu Ding, Limin Lai, Siming Xiao, Ning Guo, Bo Song, Shengfeng Guo
Summary: The addition of reactive element Y can significantly improve the high-temperature oxidation resistance of CrMoTaTi high-entropy alloys, lowering the critical concentration of Cr required for the formation of Cr2O3 on the alloy surface. The Y-bearing RHEAs exhibited good oxidation resistance even when subjected to oxidation at 1000 degrees C for 100 hours, suggesting a positive role of reactive elements in enhancing the oxidation resistance of RHEAs.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Ceramics
Meifang Tang, Limin Lai, Deyu Ding, Tianhao Liu, Weizhi Kang, Ning Guo, Bo Song, Shengfeng Guo
Summary: Amorphous alloys have shown excellent catalytic performance in the degradation of azo dye wastewater, but high degradation efficiency and reusability have been unsatisfactory for a long time. In this study, a new Co-Mo-B amorphous alloy wire was reported, which exhibited rapid degradation and excellent reusability. These findings provide a new idea for the development of amorphous alloys in the degradation of azo dye wastewater.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Tingting Liu, Yanglu Liu, Lu Xiao, Shibo Zhou, Bo Song
Summary: The concentration of Al in Mg-Al binary alloys can significantly affect the grain refinement and solution strengthening, resulting in improved tensile yield strength and elongation. Moreover, the viscoplastic self-consistent (VPSC) model can accurately predict the activation and evolution of deformation modes.
Article
Metallurgy & Metallurgical Engineering
Jian-jun Hu, Jing Liao, Xian Yang, Jing Zeng, Hui Li, Bo Song, Hong-bin Xu, Ning Guo, Yan Jin
Summary: Al-containing coatings were prepared on AZ31 magnesium alloy using pack-cementation technology. The composition of the feedstock was found to have a significant impact on the phases, microstructure, and thickness of the coatings. Additionally, the addition of pure Al powders prevented active Al ions from penetrating into the magnesium matrix, resulting in a thin Al-containing coating.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Coatings & Films
Xiang Hou, Hao Wang, Qun Yang, Yanxia Chen, Linjiang Chai, Bo Song, Ning Guo, Shengfeng Guo, Zhongwen Yao
Summary: In this study, an Al-containing ODS steel was coated with a composite Cr-AlN layer by pack-cementation treatment. The Cr-layer was found to be a Cr-Fe solid solution with Cr2C and {Cr,Fe}(2)N1-x particles, while the AlN-layer consisted of AlN particles and α-Fe matrix. The formation of Cr2C and {Cr,Fe}(2)N1-x particles was attributed to the influence of Cr on carbon and nitride in the ODS steel. During high-temperature pack-cementation treatment, N atoms diffused into the ODS steel substrate and reacted with Al, resulting in the formation of AlN particles. The density and size of the AlN particles exhibited a gradient distribution.
SURFACE & COATINGS TECHNOLOGY
(2022)
Review
Metallurgy & Metallurgical Engineering
Tingting Liu, Bo Song, Guangsheng Huang, Xianquan Jiang, Shengfeng Guo, Kaihong Zheng, Fusheng Pan
Summary: Laminated metal composites (LMCs), a unique composite material with great application prospects, particularly in the manufacturing industries, have been extensively studied. The fabrication of Mg/Al LMCs through roll-bonding, the most popular process, has been investigated, as well as the effects of rolling parameters and subsequent annealing on the interface structure. The addition of intermediate layer metal and the construction of three-dimensional interfaces have shown to improve the interface bonding strength. Furthermore, the relationship between the interface structure and mechanical properties of Mg/Al LMCs has been reviewed, highlighting the importance of further research directions in this field.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
J. R. Li, D. S. Xie, Z. R. Zeng, B. Song, H. B. Xie, R. S. Pei, H. C. Pan, Y. P. Ren, G. W. Qin
Summary: Adding a small amount of Ce element in magnesium alloy can significantly promote the formation of pyramidal and non-basal dislocations, thereby enhancing the formation and recrystallization process of subgrain boundaries, resulting in a bimodal microstructure.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Fan Wu, Meng Wang, Zhi-wen Du, Ruo-lan Shi, Qi Shang, Ting-ting Liu, Ning Guo, Sheng-feng Guo, Bo Song
Summary: The influence of free-end torsion on the compressive behavior of an extruded AZ31 rod at various temperatures was studied. Pre-torsion was found to enhance the compressive yield strength by generating dislocations and twins in the matrix. However, the hardening effect of pre-torsion decreased with increasing temperature.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Physical
Hongbing Chen, Zhikang Shen, Bo Song, Jia She
Summary: In this study, the influence of pre-tension on the torsion behavior, compression mechanical properties, and micro-hardness of an extruded AZ31 Mg alloy was investigated. The results showed that pre-tension significantly increased dislocation strengthening and torsion yield strength. Texture in the sample's cross-section could be rotated by about 30 degrees due to free-end torsion. Both pre-tension and torsion led to dislocation strengthening, increasing micro-hardness and compressive yield stress.
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)
