Article
Metallurgy & Metallurgical Engineering
Qing-lin Du, Chang Li, Xiao-hui Cui, Charlie Kong, Hai-liang Yu
Summary: Ultrafine-grained AA1060 sheets were fabricated via five-cycle accumulative roll bonding (ARB) and subsequent three-pass cold rolling or cryorolling, leading to further grain refinement. Lower rolling temperatures resulted in finer grain sizes, with cryorolled sheets exhibiting higher strength and ductility compared to cold-rolled sheets.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Multidisciplinary
Waqas Farid, Zhengyu Wang, Huijie Cui, Charlie Kong, Hailiang Yu
Summary: This study uses accumulative roll bonding (ARB) and cryorolling (CR) processes to create AA1050 composites reinforced with SiCp and TiCp, forming Al-SiCp, Al-TiCp, and Al-SiCp-TiCp composites. Effects of particles and ARB/CR passes on properties are examined. Increased cycles improve microstructure, particle distribution, bonding, and mechanical properties. The composites enhance modulus, strength, and hardness. Optimal composite is selected after comparing results.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lingling Song, Haitao Gao, Laxman Bhatt, Charlie Kong, Hailiang Yu
Summary: AA1050/AA6061 multilayer composites were processed using a combination of accumulative roll bonding (ARB) and cryorolling, followed by aging treatment. The study analyzed the evolution of microstructure and mechanical properties of the composites. The results revealed that cryorolling improves the mechanical properties by enhancing interfacial flatness, delaying plastic instability, accumulating higher dislocation density, achieving grain refinement, reducing delamination, and promoting bonding interface quality. Cryorolled samples exhibited significantly higher ultimate tensile strength compared to ARBed samples after peak aging. Both ARBed and ARB + cryorolled samples showed optimal performance after aging at 100 degrees C. The increase in ultimate tensile strength in AA1050/AA6061 multilayer composites at peak aging is mainly due to the presence of ultrafine grains and fine precipitates in the AA6061 layer.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Mechanical
Morteza Alizadeh, Faramarz Vahdatinejad, Shima Pashangeh
Summary: In this research, Al/5Zn/1Mg composite sheets were produced by the ARB process and transformed into Al-5Zn-1Mg alloy sheets through a heat treatment process. Structural investigations using SEM, EDS, and XRD showed the distribution of Zn layers and Mg powder particles in the Al matrix, as well as the formation of the alpha phase. Tensile and microhardness measurements demonstrated the improvement in mechanical properties with increasing ARB cycles.
ENGINEERING FAILURE ANALYSIS
(2023)
Review
Materials Science, Multidisciplinary
Mahmoud Ebrahimi, Qudong Wang
Summary: Accumulative roll-bonding (ARB) is a suitable severe plastic deformation technique that has significant impact in both scientific and industrial fields. This review paper focuses on the ARB method, its newly developed techniques, and the production and properties of multi-component and composite materials.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Junqing Guo, Wanting Sun, Nan Xiang, Fuxiao Chen
Summary: The interfacial bonding and fracture behavior of an ARB-processed AZ63 sheet were studied through electron microscopic analysis. The average grain size of AZ63 Mg alloy processed by ARB was refined from 12.8 μm to 5.7 μm indicating the occurrence of dynamic recrystallization. The microstructure became more uniform with increasing ARB passes, but the further refinement of grain size was inhibited due to the generation of a coherent eutectic plane at the interface.
Article
Materials Science, Multidisciplinary
Danielle Cristina Camilo Magalhaes, Osvaldo Mitsuyuki Cintho, Vitor Luiz Sordi, Andrea Kliauga
Summary: Tougher and stronger alloys are desired for structural applications, and in this study, researchers successfully achieved a simultaneous increase in strength and ductility by developing a heterogeneous structure. By combining soft and coarse-grained 1050 Al layers with fine-grained and precipitation hardened 7050 Al layers, the researchers were able to enhance the material's strength and ductility. Additionally, it was found that higher interface density improved the material's strength-ductility combination.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Amane Sahli, Mabrouk Bouaballah, Djaffar Saidi, Said Grine, Said Allaoua, Oussama Djema, Bouzid Rahal, Mohamed Khalfa, Khawla Lazazi, Rafik Zekri
Summary: The addition of Vanadium (V) to A6061 aluminum alloy processed by the accumulative roll bonding method (ARB) successfully achieved synergistic improvement in ductility and strength, mainly due to solid solution strengthening by V and grain refinement by ARB.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
J. Q. Wang, L. S. Jiao, T. Cao, J. H. Li, D. L. Cui, Y. Q. Chen
Summary: The influence of annealing time on the recrystallization evolution and mechanical behavior of Zr702 alloy obtained by accumulative roll bonding (ARB) has been investigated. Results show that with the increase of annealing time, the bonding degree of the ARB interface gradually improves due to increased diffusion driving force. Almost complete recrystallization and excellent mechanical properties can be achieved with an annealing time of 20 min, and the evolution path of the microstructure with annealing time can be described.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Witold Chrominski, Malgorzata Lewandowska
Summary: Thermo-mechanical treatment is an important tool for designing properties of aluminum alloys. This study investigates a complex procedure to increase the mechanical strength of Al-Mg-Si alloy beyond conventional levels by introducing interlayer boundaries through plastic deformation and healing the microstructure while maintaining deformation-related features. The precipitation processes vary depending on the placement of solution treatment, but the final hardness is always increased compared to typical heat treatment. Observations using transmission electron microscope study the variations in nucleation and growth of strengthening phases.
MATERIALS & DESIGN
(2022)
Article
Metallurgy & Metallurgical Engineering
Ling Ou, Lin-yan LI, Cai-he Fan, Yu-feng Nie, Jian-jun Yang
Summary: To achieve a good balance between strength and ductility, 6061 Al alloy plates were processed through cross accumulative roll bonding (CARB) at room temperature. The CARB specimens showed significantly higher ultimate tensile strength and elongation compared to those processed through ARB. This improvement is attributed to the smaller grain size, higher dislocation density, and weaker rolling texture in the CARB samples.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Chemistry, Physical
Sasan Sattarpanah Karganroudi, Bahman Hatami Nasab, Davood Rahmatabadi, Mina Ahmadi, Mohammad Delshad Gholami, Mehdi Kasaeian-Naeini, Ramin Hashemi, Ahmad Aminzadeh, Hussein Ibrahim
Summary: The study conducted comprehensive investigations on Al1050 sheets processed with ARB technique, showing significant improvements in elongation and tensile strength after five ARB passes, with a 1.8 times increase in hardness. Fractography tests and XRD analysis were used to study the fracture mechanism and texture changes, revealing the enhancement of anisotropy after ARB treatment.
Article
Nanoscience & Nanotechnology
Zhihao Feng, Haiyang Hu, Junqi Wang, Huicong Dong, Xing Zhang, Jing Ma, Jiangang Wang, Dan Liu, Jianhui Li, Xinyu Zhang
Summary: The influence of number of cycles on microstructure, texture and mechanical behavior of Zr702 plates has been studied using the accumulative roll bonding (ARB) method. The results show that increasing the number of cycles leads to changes in microstructure and texture, resulting in increased strength but decreased ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Lu Sun, Feng Li, Yuan Qi Li, Chao Li, An Xin Zhang
Summary: In this study, AZ31 magnesium alloy sheet was prepared using the HP-ARB process for the first time. Compared to traditional ARB technology, the HP-ARB sheet showed remarkable improvements in mechanical properties. After two passes, the HP-ARB sheet had a decreased grain size, increased tensile strength, and improved elongation. The HP-ARB process also improved stress distribution on the sheet and promoted dislocation slip, providing a new strategy for the manufacturing of high performance magnesium alloy sheet.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Nikzad Negahdari, Morteza Alizadeh, Shima Pashangeh, Erfan Salahinejad
Summary: Cu-26Zn-5Al shape memory alloy was produced by accumulative roll bonding and heat treatment. The effects of different austenitization cycles and cooling conditions on the microstructure and corrosion behavior were investigated. The results showed that fully martensitic microstructure and optimal corrosion resistance were achieved by cooling in boiling water.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Ankit Kumar Gupta, Harshal Shahare, Pavan Kumar, Abhay Kumar Dubey, Denis Pustovoytov, Hailiang Yu, Alexander Pesin, Puneet Tandon
Summary: This study investigates the influence of different toolpath methods, approaches, and tool design on the geometrical features and surface quality of the fin formed through the bending mode of the DM process for aluminium alloy Al-6061 T6. The optimal combination of tool profile and toolpath strategy is identified to produce components with better quality in terms of geometrical features and surface roughness.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Hao Gu, Zhide Li, Shilei Liu, Haitao Gao, Charlie Kong, Hailiang Yu
Summary: Commercially pure titanium sheets with high strength and elongation were produced through asymmetric cryorolling and subsequent annealing. The samples treated with asymmetric cryorolling plus annealing showed significant grain refinement and dislocation accumulation, resulting in uniform distribution of dislocations and texture, finer grain sizes, and a higher proportion of high angle grain boundaries. This provided favorable conditions for uniform plastic deformation and yielded similar elongations to failure as the samples treated with room-temperature rolling plus annealing.
Article
Materials Science, Multidisciplinary
S. S. Chen, P. D. Song, J. Yin, K. Qi, H. D. Li, L. Hou, W. H. Li
Summary: This study reports on a plasma electrolytic oxidation (PEO)-treated Mg-Zn-Ca-Si amorphous alloy composite with enhanced plasticity and corrosion resistance. The coated material exhibits excellent mechanical properties in compression and a significant decrease in corrosion current density after treatment.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Yuexin Zhou, Hanqing Xiong, Jue Jiang, Shisheng Yang, Zeng Tan, Charlie Kong, Hailiang Yu
Summary: To fabricate lightweight components, it is necessary to improve the strength and elongation of AA2024 sheets. In this study, we prepared high-performance AA2024 strips using a combination of (low-temperature pre-aging + cryorolling + aging) processes and investigated their mechanical properties and microstructures. The results demonstrated that the material prepared by this process exhibited an ultimate tensile strength of 631 MPa and 10% elongation could be achieved. The microstructure analysis revealed that pre-aging significantly enhanced the dislocation density (approximately 47.5%) after cryorolling, thereby strengthening the AA2024 sheets through dislocation strengthening mechanism. Moreover, the cryorolled AA2024 sheets exhibited a c-fiber texture resembling asymmetric rolling. The yield strength increment of the material was calculated, and its strengthening source was discussed.
Article
Chemistry, Physical
Shisen Yang, Zhide Li, Yuexin Zhou, Zeng Tan, Charlie Kong, Hailiang Yu
Summary: In this study, AA7075 sheets were processed by cryorolling and room-temperature rolling, followed by aging treatment. The results showed that cryorolled samples had better shape and fewer edge cracks compared to room-temperature rolled samples. The cryorolled samples exhibited significantly higher yield strength and ultimate tensile strength, but lower elongation. After aging treatment, the strength and ductility of the samples were simultaneously improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yangfan Wang, Zhiyang Wang, Arman Hobhaydar, Zhijun Qiu, Bosheng Dong, Qinfen Gu, Zengxi Pan, David Wexler, Hanliang Zhu, Xizhang Chen, Mingxing Zhang, Huijun Li
Summary: Novel low activation medium entropy alloys (MEAs) of FeCr2V and FeCr2VW0.1 were developed as potential nuclear structural materials. The materials were fabricated using arc melting and their microstructure and mechanical properties were investigated. The results show that the developed MEAs exhibited a dual-phase microstructure consisting of body-centered-cubic (BCC) phases. The addition of W significantly enhanced the solid solution strengthening (SSS) and precipitation strengthening (PS) in the studied alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Lingling Song, Haitao Gao, Laxman Bhatt, Charlie Kong, Hailiang Yu
Summary: AA1050/AA6061 multilayer composites were processed using a combination of accumulative roll bonding (ARB) and cryorolling, followed by aging treatment. The study analyzed the evolution of microstructure and mechanical properties of the composites. The results revealed that cryorolling improves the mechanical properties by enhancing interfacial flatness, delaying plastic instability, accumulating higher dislocation density, achieving grain refinement, reducing delamination, and promoting bonding interface quality. Cryorolled samples exhibited significantly higher ultimate tensile strength compared to ARBed samples after peak aging. Both ARBed and ARB + cryorolled samples showed optimal performance after aging at 100 degrees C. The increase in ultimate tensile strength in AA1050/AA6061 multilayer composites at peak aging is mainly due to the presence of ultrafine grains and fine precipitates in the AA6061 layer.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Haitao Gao, Shilei Liu, Lingling Song, Charlie Kong, Hailiang Yu
Summary: Cryorolling is used to improve the strength and ductility of copper/brass laminates by creating a multistage heterostructure consisting of ultrafine grains, curved interfaces, shear bands, and deformation twins. Low-temperature annealing further enhances the mechanical properties of the laminates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Zhide Li, Charlie Kong, Hailiang Yu
Summary: The effect of 1 pct and 10 pct reduction ratios per pass on the microstructure and mechanical properties of high-purity nickel was investigated. The study found that cycle skin-pass rolling resulted in finer grains, higher strength, and elongation compared to conventional rolling. This was attributed to the presence of high dislocation strengthening and a particular dislocation cell structure.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Kaiguang Luo, Gang Lei, Shilei Liu, Charlie Kong, Hailiang Yu
Summary: AlCoCrFeNi high-entropy alloy particles (HEAp)-reinforced aluminum matrix composites (AMCs) were fabricated using stir casting and subsequent cryorolling. The tensile mechanical properties of the HEAp/AMCs were investigated at both room temperature and cryogenic temperature. The study of microstructures showed that the ultimate tensile strength and elongation of the HEAp/AMCs at cryogenic temperature were higher than those at room temperature. The improvement in strengths at cryogenic temperature was attributed to the reinforcement by coefficient of thermal expansion mismatch and dislocation, while the higher elongation was due to the higher length-diameter ratio of the particles in the cryogenic environment.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Review
Metallurgy & Metallurgical Engineering
Hai-tao Gao, Charlie Kong, Hai-liang Yu
Summary: Metal laminates have gained much attention due to the comprehensive advantages of various metals. Roll bonding method, including hot roll bonding, cold roll bonding, accumulative roll bonding, and cryogenic roll bonding, has become one of the main fabrication methods. This article reviews the research progress in the roll bonding of metal laminates, discusses the formation mechanism of bonding interface and the main influence factors on the interfacial bonding quality, and points out further prospects on the advancement of high-performance roll bonding of metal laminates.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Editorial Material
Materials Science, Multidisciplinary
Guanyu Deng, Hongtao Zhu, Anh Kiet Tieu
Article
Materials Science, Multidisciplinary
Waqas Farid, Zhengyu Wang, Huijie Cui, Charlie Kong, Hailiang Yu
Summary: This study uses accumulative roll bonding (ARB) and cryorolling (CR) processes to create AA1050 composites reinforced with SiCp and TiCp, forming Al-SiCp, Al-TiCp, and Al-SiCp-TiCp composites. Effects of particles and ARB/CR passes on properties are examined. Increased cycles improve microstructure, particle distribution, bonding, and mechanical properties. The composites enhance modulus, strength, and hardness. Optimal composite is selected after comparing results.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jianrui Xing, Gang Lei, Yafei Wang, Laxman Bhatta, Charlie Kong, Hailiang Yu
Summary: This study investigated the effect of pre-cryorolling and room-temperature pre-rolling on the natural aging and bake hardening response of Al-0.92Mg-0.48Si alloy. The results show that both room-temperature pre-rolling and pre-cryorolling can effectively inhibit the adverse effects of natural aging and improve the bake hardening response. Pre-cryorolling with a reduction of 15 pct is found to be the most appropriate pre-deformation procedure for this alloy.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Fei-Long Yu, Charlie Kong, Hai-Liang Yu
Summary: In this study, tensile tests were performed on cryorolled Ti-6Al-4V titanium alloy at temperatures of 760 degrees C and 830 degrees C, with different strain rates. The results showed that the alloy exhibited good low-temperature superplasticity at 760 degrees C and a strain rate of 5 x 10(-4) s(-1), with a fracture elongation of 385%. The lower fracture elongation at 830 degrees C was attributed to grain coarsening and oxidation. The strain rate sensitivity value m of all samples was greater than 0.3, indicating that the cryorolled Ti-6Al-4V titanium alloy with non-equiaxed grain structure can achieve high superplasticity at temperatures lower than 0.5T(m). The main deformation mechanisms in the tensile tests at 760-830 degrees C were found to be grain rotation and grain boundary sliding. Substantial dynamic recrystallization and recovery occurred, leading to an average grain size of less than 5 μm after the tensile tests.
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)
