Article
Materials Science, Coatings & Films
Seyedeh Marjan Bararpour, Hamed Jamshidi Aval, Roohollah Jamaati
Summary: In this study, a cellular automaton model was used to predict the dynamic recrystallized microstructure of the friction-surfaced Al-Mg alloy coating, showing that the prediction error of grain size when considering secondary phase particles was lower. With an increase in rotational and traverse speeds as well as axial feeding rate, the grain size of the coating decreases initially before bouncing back up.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Dayu Shu, Jing Wang, Menghao Jiang, Gang Chen, Liwei Lu, Hongming Zhang
Summary: The DRX behavior of the as-extruded AM50 magnesium alloy was investigated using isothermal compression experiments and CA simulations, showing that the behavior is temperature and strain rate dependent. The developed CA model can confidently estimate the DRX behavior of the alloy under high temperature conditions.
Article
Metallurgy & Metallurgical Engineering
Yu-Ying He, Sheng-Wen Bai, Gang Fang
Summary: In this study, the dynamic recrystallization (DRX) behavior of a Mg-Al-Zn-RE alloy with abundant second-phase particles during hot extrusion is investigated using a combination of finite element (FE) and cellular automaton (CA) models. The results show that the extrusion conditions have a significant influence on the microstructural evolution of the magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Ya Tang, Daihong Xiao, Lanping Huang, Renxuan You, Xinyue Zhao, Nan Lin, Yunzhu Ma, Wensheng Liu
Summary: In this study, the evolution of deformation microstructures and multiscale phases in Al-Cu-Li alloy was investigated under different temperatures and strain rates. The results showed that the compress temperature has an impact on the characteristic and dynamic deformation behaviors of secondary phases. Proper strain rates can promote the formation and growth of multistage banded T-1 phase.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Ya Tang, Daihong Xiao, Lanping Huang, Renxuan You, Xinyue Zhao, Nan Lin, Yunzhu Ma, Wensheng Liu
Summary: The study reveals that compression temperature significantly influences the characteristic and dynamic behavior of secondary phases in Al-Cu-Li alloy during hot deformation. Proper strain rates can accelerate the formation and growth of T-1 phase, but at higher temperatures, T-1 phase may completely dissolve into the matrix.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
Dong Sun, Shu-yong Jiang, Yan-qiu Zhang, Bing-yao Yan, Hao Feng
Summary: This study investigates the discontinuous dynamic recrystallization (DDRX) behavior of TiNb alloys during hot compression, and finds that the CA model can effectively predict this behavior. The mean grain size and volume fraction for DDRX of TiNb alloys increase with increasing deformation temperature, but decrease with increasing strain rate. In addition, the serrated grain boundaries and nucleation points of recrystallized grains in the deformed TiNb samples align with the characteristics of grain boundary bulging mechanism. Furthermore, the random orientation effect of DDRX grains helps to weaken the intensity of deformation texture in TiNb alloys.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Materials Science, Multidisciplinary
Rong Fu, Yuanchun Huang, Yu Liu, Hui Li
Summary: The thermal deformation behavior of homogenized 2195 Al-Li alloy was investigated under different deformation temperatures and strain rates. It was observed that the flow stress decreases with decreasing strain rate or increasing temperature. The decrease in flow stress at lower temperatures was attributed to the hindering effect of dynamic precipitation of fine secondary phases, which restrict the movement of dislocations and (sub)grain boundaries. Flow localization regions were also observed at specific microstructure conditions. Additionally, DRX and DRV were found to increase with decreasing lnZ values, and the dominant DRX mechanism varied with lnZ values.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Engineering, Industrial
Jiawei Xu, Qiwei He, Xueze Jin, Shaoshun Bian, Debin Shan, He Wu, Wenchen Xu
Summary: In this study, the limitations of traditional cellular automaton (CA) models in simulating dynamic recrystallization (DRX) behavior of mixed-grain microstructures were analyzed. The researchers used an inhomogeneous nucleation method based on the relationship between nucleation probability and dislocation amounts of grains to overcome this challenge. Isothermal compression experiments were conducted to validate the reliability of the models. The study showed that 3D CA was advantageous for mixed-grain microstructures and could help in selecting suitable deformation parameters.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jinqi Pan, Wencong Zhang, Jianlei Yang, Songhui Wang, Xiaoyu Wang, Liqiang Zhan, Wenzhen Chen
Summary: In this study, the microstructural characterization and mechanical behavior of the extruded ZK61 alloy under dynamic and quasi-static loading at 623 K were investigated. It was found that an adiabatic shear band (ASB) composed of ultra-fine grains was formed under dynamic loading, while shear deformation occurred in an area with equiaxed grains under quasi-static loading. The stress-strain curve of dynamic loading showed high yield stress and long working-hardening stage, while the strain-hardening and thermal-softening in quasi-static curves reached a dynamic balance.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Bin Wang, Xizhao Shan, Hongli Zhao, Shuxin Bai, Bingxing Wang, Yong Tian, Yu Tang
Summary: The hot deformation behaviors and microstructural evolution of an equiatomic NbZrTiTa refractory high entropy alloy were investigated. The study found that dislocation piling-up, kink bands, and dynamic recrystallization played significant roles in influencing the alloy's properties under different temperatures and strain rates.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yunlong Yao, Shichao Xiu, Cong Sun, Xiangna Kong, Yuan Hong
Summary: This study investigates the metallurgical behavior of high strength alloy steel 40Cr during the grinding strengthening (GS) process, which can cause phase transformation and dynamic recrystallization. The results show a large temperature gradient in the GSL, with a maximum temperature reaching 1060 degrees C, and an increase in microstructure refinement with higher grinding depth.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Mechanical
Hongchao Ji, Zhanshuo Peng, Xiaomin Huang, Baoyu Wang, Wenchao Xiao, Shufu Wang
Summary: This study predicts the thermal deformation behavior and visualizes the dynamic recrystallization process of TC4 titanium alloy through thermal simulation test, metallographic test, PSO-BP algorithm, and CA method. The results show that the grain growth of TC4 titanium alloy is uneven during hot compression, and the increase in temperature and decrease in strain rate favor dynamic recrystallization. The PSO-BP model accurately predicts the rheological behavior of TC4 titanium alloy, and the simulated microstructure matches the experimental structure with an average grain size error within 10%.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Metallurgy & Metallurgical Engineering
Xu Ren, Yuan-Ming Huo, Tao He, Seyed Reza Elmi Hosseini, Zhi-Yuan Bian, Jie Bai, Xiang-Yang Du
Summary: Isothermal compression experiments were conducted on EA4T steel at different temperatures and strain rates, and a high-temperature constitutive model was developed based on the experimental data. The activation energy for dynamic recrystallization was calculated, and a modified cellular automaton model suitable for EA4T steel was developed to simulate the behavior of dynamic recrystallization.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Jian Ning, Qun Li, Zongyuan Zou, Tianwei Liu, Lei Chen
Summary: Research on the hot tensile deformation behavior of 2195 Al-Li alloy in the temperature range of 440-500 degrees C revealed that the degree of dynamic recrystallization increases with the strain, and the pinning effect of precipitations is more sensitive to temperature. When the temperature reaches 500 degrees C, the weakening of the pinning effect of precipitations makes it easier to activate more dynamic recrystallization.
Article
Chemistry, Physical
Yang Xiang, Wei Xiang, Wuhua Yuan
Summary: Analyzing the microstructure of Ti-55531 alloy under different deformation conditions during hot compression in the alpha + beta phase region, it was found that the flow softening phenomenon is influenced by a combination of mechanisms. Deformation heat causes significant flow softening at a strain rate of 1 s-1, while dynamic recrystallization has little contribution. With increasing deformation temperature and strain rate, the flow softening fraction f V decreases due to the shift in alpha p phase volume fraction, from 16.6% at 760°C and 0.001 s-1 to 1.4% at 840°C and 1 s-1. The flow softening fraction f SF is 3.95% at 790°C and 5.34% at 820°C as a result of texture evolution. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Mingjie Zhao, Liang Huang, Rong Zeng, Hongliang Su, Dongxu Wen, Jianjun Li
MATERIALS CHARACTERIZATION
(2020)
Article
Materials Science, Multidisciplinary
Ping-hu Chen, Yun Zhang, Rui-qing Li, Yan-xing Liu, Song-sheng Zeng
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
DongXu Wen, TianYu Yue, YiBo Xiong, Kang Wang, JiaKai Wang, ZhiZhen Zheng, JianJun Li
Summary: The study reveals that the high-temperature tensile behavior of the steel shows typical work hardening and dynamic recovery characteristics. The necking capability increases with decreasing strain rate and increasing tensile temperature. However, the presence of large deep dimples significantly reduces the loading capability and leads to poor elongation to fracture at low strain rates. The Arrhenius-type phenomenological (AP) model developed by the Nelder-Mead (NM) simplex method shows high accuracy and narrow error bands compared to other models.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Kang Wang, DongXu Wen, JianJun Li, ZhiZhen Zheng, YiBo Xiong
Summary: Isothermal compression tests were conducted on low-alloyed ultrahigh strength steel to investigate the hot deformation behaviors under different deformation parameters. It was observed that dynamic recrystallization easily occurred under certain conditions, and models were established to accurately reproduce the hot deformation behaviors of the steel.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
YiBo Xiong, DongXu Wen, JianJun Li, Kang Wang, ZhiZhen Zheng
Summary: The high-temperature deformation characteristics of an ultrahigh strength steel were studied through hot compression tests, analyzing the influences of deformation parameters on microstructure evolution. The results showed that the steel exhibited dynamic recrystallization features under different deformation parameters, and a physically-based constitutive model was able to predict the deformation stress of the steel accurately.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Ping Long, Dongxu Wen, Jie Min, Zhizhen Zheng, Jianjun Li, Yanxing Liu
Summary: The study investigates the influence of linear energy input and cooling rate on the microstructure evolution, mechanical properties, and fracture mechanisms of steel deposited using cold metal transfer-based wire arc additive manufacturing system. The microstructures mainly consist of delta-ferrite and austenite dendrites, with sigma phase forming under low cooling rate conditions. The primary dendrite spacing decreases with lower linear energy input or higher cooling rate, affecting the mechanical properties of the steel. Mesoscopic damages are mainly caused by pore coalescence under low linear energy input, while dislocation piling up around delta-ferrite induces cracks under high linear energy input.
Article
Materials Science, Multidisciplinary
DongXu Wen, ChenXin Gao, ZhiZhen Zheng, Kang Wang, YiBo Xiong, JiaKai Wang, JianJun Li
Summary: The hot tensile behavior of a low-alloyed ultra-high strength (LUHS) steel was studied, and the effects of tensile processing parameters on the hot tensile behaviors and fracture characteristics were comprehensively discussed. A dislocation density based constitutive model was constructed and improved by considering plastic damage, showing high stress under low tensile temperatures or high strain rates. Ductile fracture with dimples was the dominant fracture type, and the model was found to be preferred for reconstructing the hot tensile behaviors of the studied steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
YiBo Xiong, DongXu Wen, ZhiZhen Zheng, JianJun Li
Summary: In this study, 300M steel straight wall parts (SWPs) were fabricated by wire arc additive manufacturing, and the effects of interlayer temperature on microstructure and mechanical performance were investigated. The results showed that surface waviness of SWP initially decreased and then increased with interlayer temperature, with higher microhardness and ultimate tensile strength in the top region compared to the middle and bottom regions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Yan-Xing Liu, Zhi-Jiang Ke, Run-Hua Li, Ju-Qing Song, Jing-Jing Ruan
Summary: The study revealed that grain growth in the Ni-based superalloy is mainly controlled by grain boundary migration, with a minor pinning effect from the precipitates.
Article
Chemistry, Analytical
Hua Tan, Jiahui Pan, Xiaojia Zheng, Xiaoquan Fu, Yuxun Zhang, Yanxing Liu, Qiheng Huang
Summary: This study utilizes femtosecond laser glass welding technology to form four different porous structures of welding spots through specific manufacturing processes. The welding spot fabricated by the flattened Gaussian beam exhibits smooth edges and a flat pore bottom. The welding spot manufactured with alternating high repetition rates introduces multiple refractive indices.
Article
Materials Science, Multidisciplinary
YiBo Xiong, DongXu Wen, ZhiZhen Zheng, ChaoYuan Sun, Jing Xie, JianJun Li
Summary: This study investigates the effects of heat treatment on microstructure evolution and mechanical properties of directed energy deposition-Arc (DED-Arc) 300M steel. The results show that increasing the austenitizing temperature transforms the original columnar grains into equiaxed grains. The spherical cementite and rod-shaped epsilon-carbides in the as-deposited microstructure are completely dissolved above 970 degrees C, increasing the carbon supersaturation in the martensite and facilitating the dispersion of fine epsilon-carbides. The anisotropy of tensile properties caused by the DED-Arc process is significantly reduced with higher austenitizing temperature. A heat treatment procedure is proposed for DED-Arc 300M steel, resulting in improved microhardness and excellent tensile properties.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
PeiZhi Yan, DongXu Wen, Yang Liu, Liang Huang, XiaoLi Yang, ZhiCheng Zhang, FuZe Xu, JianJun Li
Summary: The evolution of microstructure and 8 phase (Ni3Nb) in a nickel-based superalloy was studied using hot compression tests. The effects of deformation parameters on dynamic recrystallization (DRX), fracture behaviors, and dissolution mechanisms of 8 phase were characterized and discussed. The results showed that the fraction of DRX increased with increasing strain or decreasing strain rate, and two mechanisms were identified for the promoting effect of DRX on the fracture behaviors of 8 phase. Additionally, the distribution of Nb element tended to be uniform with further straining due to the diffusion channels provided by dislocations around the phase boundary.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
YiBo Xiong, DongXu Wen, ZhiZhen Zheng, ChaoYuan Sun, Jing Xie, JianJun Li
Summary: The combination of wire arc additive manufacturing (WAAM) technology with traditional manufacturing process provides a promising method for fabricating large and complex parts. A comparative study of flow behaviors and microstructure evolution of wrought and WAAMed ultrahigh-strength (UHS) steels was conducted to acquire the optimal hybrid manufacturing process. The results showed that the WAAMed UHS steel has higher flow stress and slower dynamic recrystallization kinetics compared to the wrought UHS steel, due to its coarse prior austenite columnar grains and carbides in the initial microstructure.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Optics
Hua Tan, Yuxun Zhang, Yanxing Liu, Xiaoquan Fu
JOURNAL OF OPTICS-INDIA
(2020)
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)
