Article
Metallurgy & Metallurgical Engineering
Ye Wang, Feng Li, Nan Bian, Hua Qiu Du, Peng Da Huo
Summary: Accumulative alternating back extrusion is an effective method for modifying the microstructure of magnesium alloy sheet. The process significantly refines the grain size and improves the plasticity of the sheet, providing scientific guidance for subsequent processing.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Xi Zhao, ShuChang Li, YangSheng Zheng, ZhengRan Liu, Kai Chen, JianMin Yu, Zhimin Zhang, ShunQi Zheng
Summary: The repetitive upsetting-extrusion (RUE) method is utilized to improve the strength and toughness of AZ80 Mg rods while reducing tensile anisotropy. The resulting microstructure after RUE processing shows a refinement of grains and dynamic recrystallization, leading to enhancements in mechanical properties. The introduction of an interactive stress state promotes dispersion of fiber texture and contributes to the elimination of tensile yield anisotropy in extruded bars.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Jingkai Feng, Dingfei Zhang, Hongjun Hu, Yang Zhao, Xia Chen, Bin Jiang, Fusheng Pan
Summary: During semi-solid extrusion, AZ31 magnesium alloy exhibits a higher nucleation rate for new fine grains and limited twinning activation, resulting in a homogeneous microstructure and improved mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Kai Zhang, Zhutao Shao, Christopher S. Daniel, Mark Turski, Catalin Pruncu, Lihui Lang, Joseph Robson, Jun Jiang
Summary: The compression of a commercial cast magnesium alloy at room and cryogenic temperatures showed that cryogenic deformation resulted in higher flow stress, higher strain hardening rate, and moderately reduced strain to failure compared to room temperature deformation. This was attributed to the increased fraction of finer twins and twin twin interactions at cryogenic temperatures, which was found to be more effective in hardening than dislocation density.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Amit Prasad, Soo Yeol Lee, Sudhanshu S. Singh, Nitya Nand Gosvami, Jayant Jain
Summary: The study demonstrates that the addition of minor La significantly modifies the texture and recrystallization behavior of the Mg-10Dy alloy, resulting in faster recrystallization kinetics, finer grain size, and weaker texture compared to the Mg-Dy alloy. The use of a JMAK model effectively captures the evolution of recrystallization in both alloys, with good agreement between model predictions and experimental results.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Weizhang Wang, Jingjing Zhang, Jianbo Li, Xiang Chen, Shuaishaui Liu, Guangsheng Huang, Xianhua Chen, Kaihong Zheng, Bin Jiang, Fusheng Pan
Summary: This study comparatively investigated the effects of conventional extrusion (CE) and asymmetric extrusion (AE) on the microstructure, texture, and mechanical properties of 6% Ti/AZ31 composite. The results showed that the two extrusion methods induced different effects on particle deformation zones (PDZs), mainly related to deformation accumulation and Ti particle distribution. The findings provide insights into the mechanisms behind the influence of AE on microstructure and texture, contributing to the development of Ti particle reinforced Mg-based composites with improved properties and structures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Jin-Hua Peng, Zhen Zhang, Huan-Huan Cheng, Hai-Gen Wei, Liang-Yu Chen, Qian-Hao Zang, Sheng Lu
Summary: Isothermal annealing was conducted on AZ31 magnesium bars to investigate {1011} twins related static recrystallization and texture weakening effect. The results show that static recrystallization occurs firstly in {1011} twinning zones during annealing, leading to equiaxed grains in the bars. With increasing extrusion strain, grain size decreases gradually and the basal texture becomes weaker. Tensile and compressive yield strength show a significant decrease after annealing, following a Hall-Petch relationship, with a negative Hall-Petch coefficient K observed in tensile tests.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Ye Wang, Feng Li, Yu Wang, Xing Mao Xiao
Summary: The interactive alternating forward extrusion (AFE) method can change the texture type and weaken the texture strength. The texture evolution of interactive AFE was studied using AZ31 magnesium alloy as an example. The results show that various dynamic recrystallization behaviors can weaken the texture to different degrees, with twinning-induced recrystallization having a particularly significant effect. The formation of a stable fiber texture was observed during the AFE process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Review
Chemistry, Physical
Qingshan Yang, Dan Zhang, Peng Peng, Guobing Wei, Jianyue Zhang, Bin Jiang, Fusheng Pan
Summary: Magnesium alloy is a widely used lightweight metal material with high specific strength and stiffness. Improving the room temperature forming performance of Mg alloy sheets through extrusion technology is crucial. Our research group has developed a new asymmetric extrusion technology and elucidated the process characteristics, texture control mechanism, and forming properties of Mg alloy sheets. The findings present an innovative extrusion technology for highly formable Mg alloy sheets. Evaluating the importance of this study: 8 points
Article
Materials Science, Multidisciplinary
Zhixin Zhang, Jiangkun Fan, Ruifeng Li, Hongchao Kou, Zhiyong Chen, Qingjiang Wang, Hailong Zhang, Jian Wang, Qi Gao, Jinshan Li
Summary: The study on Ti65 titanium alloy sheet revealed anisotropic properties in terms of tensile strength, yield strength, and creep endurance between transverse direction (TD) and rolling direction (RD). The orientation of grains and crack initiation sites also showed distinct differences during the creep process. Factors contributing to this anisotropy include changes in Schmid factors values and differences in creep mechanisms between TD (grain boundary sliding) and RD (dislocation slip). It is important to fully consider the anisotropy of Ti65 sheet to enhance structural efficiency in engineering design and application.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Banglong Fu, Junjun Shen, Uceu F. H. R. Suhuddin, Ting Chen, Jorge F. dos Santos, Benjamin Klusemann, Michael Rethmeier
Summary: The novel process variant, differential rotation refill friction stir spot welding (DR-refill FSSW), improves lap shear strength (LSS) in welds by stimulating discontinuous dynamic recrystallization and producing a bimodal microstructure with weakened texture.
SCRIPTA MATERIALIA
(2021)
Article
Metallurgy & Metallurgical Engineering
Min-jie Liang, Jie Zheng, Huan Liu, Bao-xing Yao
Summary: This study investigates the microstructure, texture evolution, and mechanical properties of AZ31 magnesium alloy during the cyclic expansion extrusion with the asymmetrical extrusion cavity (CEE-AEC) process. The results show that after 3 passes, the microstructures are refined and the textures are deflected, leading to significant improvements in the mechanical properties of the alloy.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Liangliang Xue, Lifei Wang, Pengbin Lu, Hua Zhang, Guangsheng Huang, Bin Xing, Hongxia Wang
Summary: In-plane shear deformation is introduced into the pre-twinned AZ31 Mg alloy sheet to modify the basal texture and improve the formability. The twinning orientation is secondary regulated and rotated away from the transverse direction, resulting in a significant weakening of the basal texture. After annealing, the recrystallized grains inherit the grain orientation of rotating twins, leading to improved fracture elongation and Erichsen value.
Article
Engineering, Industrial
Dijia Zhao, Jian Qin, Shulin Lue, Jianyu Li, Wei Guo, Shusen Wu, Yaohua Zhang
Summary: Ultrafine-grained AZ31 alloy was successfully fabricated using a novel continuous squeeze casting-extrusion process. The extrusion ratio had a significant effect on the grain size and mechanical properties.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zhenghua He, Jiande Liu, Xiaofei Zhu, Xinya Zhai, Yuhui Sha, Hongbo Hao, Lijia Chen
Summary: Sharp texture and enhanced magnetostriction were achieved in Fe-Ga thin sheets through secondary recrystallization. The evolution of texture, inhibitor, and magnetostriction during the annealing process were analyzed. A fine and homogeneous microstructure with a strong g-fiber and weak Goss and {310}<001> texture was produced.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Qiang Liu, Jiangfeng Song, Qiuyan Shen, Liangyin Wu, Bin Jiang, Weimin Gan, Kaihong Zheng, Fusheng Pan
Summary: By conducting in-situ tensile experiments at 150°C, the crack propagation mechanism of magnesium alloy sheets was studied. It was found that at 150°C, the prismatic slip, basal slip, and extension twining synergistically coordinate strain in the ZM21 alloy sheet, leading to localized strain concentration at fine grain areas and grain boundaries or triple junctions. This results in severe surface roughening and crack initiation, with the pre-cracked sample exhibiting more severe deformation at the crack tip due to strain concentration.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Multidisciplinary
Yu Cao, Shaojie Zhang, Baoshan Zhang, Chengyu Han, Yiming Zhang, Xiaoyi Wang, Shuo Liu, Haochen Gong, Xinyi Liu, Siyu Fang, Fusheng Pan, Jie Sun
Summary: This study proposes a novel local electric field strategy to improve the reaction kinetics and minimize the loss of active materials in phosphorus anode. By optimizing ionic covalent organic frameworks, the introduction of local electric field restricts the dissolution of active materials and accelerates the reaction kinetics. The experimental results show that this strategy significantly enhances the electrochemical performance and capacity retention of the phosphorus anode.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Meidi Wang, Yutong Wang, Junyi Zhao, Jiyu Zou, Xu Liang, Ziting Zhu, Jiashi Zhu, Hongjian Wang, Yuhan Wang, Fusheng Pan, Zhongyi Jiang
Summary: Here, an electrochemical interfacial polymerization strategy was used to fabricate ultrathin COF membranes with a thickness of 85 nm by actively manipulating the self-healing effect and self-inhibiting effect. The resulting COF membrane showed superior performance in brine desalination with a permeation flux of 92 kg m(-2) h(-1) and a rejection of 99.96%. Our electrochemical interfacial polymerization strategy enriches the fabrication approach of COF membranes and facilitates the rational design of ultrathin membranes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Peng Peng, Jia She, Qingshan Yang, Shuai Long, Aitao Tang, Jianyue Zhang, Qingwei Dai, Fusheng Pan
Summary: A new low-cost and high mechanical strength Mg-0.5Gd-xMn (x = 0, 0.5, 1.0, 1.5, 2.0 wt. %) alloy system was developed by low-temperature extrusion. The alloy exhibited gradually increased yield strength and ultimate tensile strength with the increment of the Mn content. It possessed comparable high mechanical strength with heavy rare-earth content traditional Mg alloys but at a much lower cost.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Weizhang Wang, Jingjing Zhang, Jianbo Li, Xiang Chen, Shuaishaui Liu, Guangsheng Huang, Xianhua Chen, Kaihong Zheng, Bin Jiang, Fusheng Pan
Summary: This study comparatively investigated the effects of conventional extrusion (CE) and asymmetric extrusion (AE) on the microstructure, texture, and mechanical properties of 6% Ti/AZ31 composite. The results showed that the two extrusion methods induced different effects on particle deformation zones (PDZs), mainly related to deformation accumulation and Ti particle distribution. The findings provide insights into the mechanisms behind the influence of AE on microstructure and texture, contributing to the development of Ti particle reinforced Mg-based composites with improved properties and structures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Jun Xu, Jun Zhao, Bin Jiang, Wenjun Liu, Hong Yang, Xintao Li, Yuehua Kang, Nan Zhou, Kaihong Zheng, Fusheng Pan
Summary: Mg-3Al-1Zn (AZ31) sheets were produced by transverse gradient extrusion (TGE) process. The microstructures, textures, and mechanical behavior of TGE and conventional extruded (CE) sheets were studied and compared. TGE sheets exhibited finer grain structure, unique textures, and higher ductility compared to CE sheets. Both basal slip and tensile twins were activated during deformation in TGE sheets.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Shuai-shuai Liu, Bang-peng Yang, Guang-sheng Huang, Xian-hua Chen, Ai-tao Tang, Bin Jiang, Kai-hong Zheng, Fu-sheng Pan
Summary: The influence of dual-heterostructure of grain size and precipitates on the mechanical properties of the AZ91 alloy extruded sheet was studied. The ER3.9 and ER6.4 samples showed remarkable coarse and fine-grained layers with heterogeneous fine-dispersed precipitates. The ER6.4 sample exhibited an excellent combination of strength and ductility due to a balance of deformation-induced stress and precipitates, while the ER3.9 sample had higher deformation-induced stress and Schmid factor but was negatively affected by more banded precipitates.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Multidisciplinary
Cong Dang, Jingfeng Wang, Jinxing Wang, Di Yu, Wenxuan Zheng, Changbing Xu, Zihong Wang, Le Feng, Xianhua Chen, Fusheng Pan
Summary: In this study, a bimodal grain structure consisting of fine recrystallized grains and coarse unrecrystallized grains was obtained by adding Mn into the Mg matrix and using low extruded temperature. The fine recrystallized grains promote grain boundary slip and enhance the alloy's plasticity. The presence of parallel dislocations in the unrecrystallized grains, caused by the suppressed dislocation recovery and dynamic recrystallization rate at low temperature, leads to a high work hardening rate in the bimodal grain structure, resulting in a high yield strength and improved damping capacity at room temperature for Mg-Mn alloys.
Article
Chemistry, Physical
Yuhe Tian, Xinwei She, Jiangyang Yu, Zhimeng Tang, Ruihao Zhang, Xiaolei Ai, Haoyu Dai, Kaihong Zheng, Fusheng Pan, Xianquan Jiang
Summary: This study reported for the first time that the formation of hard and brittle phase at the interface of Al-Mg composite plate was inhibited by implanting Er powder at the interface and multi-pass hot rolling process. The results show that the implantation of Er powder can effectively inhibit the formation of intermetallic compounds (IMC) at the interface of Al-Mg composite plates and enhance the interface peeling strength.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Yingying Li, Yuan Yuan, Jun Wang, Liang Wu, Fuyong Cao, Ligang Zhang, Fusheng Pan
Summary: The biodegradation behavior and mechanical properties of Mg-Sr-Y alloys were studied, and it was found that the Mg-0.3Sr-0.5Y alloy exhibited low corrosion rate (0.823 mm y(-1)) in Hanks' solution, attributed to the solid solution of Y in α-Mg phase and Mg17Sr2 phase and the formation of a protective film.
NPJ MATERIALS DEGRADATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Hua Zhao, Jiangfeng Song, Jing Wang, Qiang Liu, Gong Chen, Jianfei Xiao, Jin'ge Liao, Hang Teng, Bin Jiang, Fusheng Pan
Summary: In this study, the relationship between semi-solid deformation and hot tearing susceptibility of magnesium alloys was investigated. Tensile experiments were conducted on binary Mg-xCa (x = 0.2, 0.5, and 2 wt%) alloys using a Gleeble 3500 thermal simulator. The linear contraction of the alloys was measured using a novel apparatus based on a constrained rod casting (CRC) hot tearing apparatus. The results showed that the ultimate tensile strength (UTS) and fracture elongation (FE) of the alloys decreased with decreasing solid fraction (increasing test temperature). It was found that Mg-0.5Ca alloy had the highest hot tearing susceptibility, attributed to its extremely low ductility even at a high solid fraction of 0.96 and the highest linear contraction among the three alloys.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Nanoscience & Nanotechnology
Junlei Zhang, Yingxing Zhang, Xiang Chen, Zulai Li, Guangsheng Huang, Fusheng Pan
Summary: Two types of welding processes, DS-FSW and SS-FSW, were used for dissimilar welding between AM60 and AZ31 Mg alloys. The microstructure observation indicated that the microstructure of the joint nugget zone (NZ) under both processes was refined after welding and their grain size was relatively close. The tensile tests revealed that the DS-FSW joint exhibited excellent mechanical properties compared with the SS-FSW joint due to its large processing volume, lower volume proportion of the stirring zone, and symmetrically distributed weld zone structure improved the deformation coordination of the joint, thereby delaying its premature fracture and exhibiting better mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Shiyu Jiang, Li Yang, Yuan Yuan, Ligang Zhang, Jun Wang, Tao Chen, Aitao Tang, Lifeng Ma, Fusheng Pan
Summary: In order to ensure good corrosion resistance and mechanical properties of Mg-Al alloys, it is necessary to strictly control the iron (Fe) impurity. This study investigated the effects of alloying elements and temperatures on the solubilities of Fe in Mg-Al-based alloy melts. It was found that the addition of yttrium (Y) or manganese (Mn) elements could significantly reduce the solubilities of Fe in Mg-xAl (x = 1 and 3 wt.%) alloy melts.
Article
Chemistry, Multidisciplinary
Yuhan Wang, Junyi Zhao, Sui Zhang, Zhiming Zhang, Ziting Zhu, Meidi Wang, Bohui Lyu, Guangwei He, Fusheng Pan, Zhongyi Jiang
Summary: A two-step method for synthesizing COF nanosheets and membranes is proposed. The method involves framework assembly and functional group switching. The fabricated COF membranes demonstrated excellent separation performance.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Xiaolin Hu, Jichuan Fan, Ronghua Wang, Meng Li, Shikuan Sun, Chaohe Xu, Fusheng Pan
Summary: By combining vacancies and heterogeneous interfacial engineering, three-dimensional core-shell NiCoP/NiO heterostructures with dominated oxygen vacancies have been constructed for efficient electrocatalysis. These materials possess multiple exposed active sites, faster mass transfer behavior, optimized electronic structures, and improved electrochemical performance.
GREEN ENERGY & ENVIRONMENT
(2023)
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)
