Article
Engineering, Manufacturing
Ruiqiang Zhang, Wei Wang, Jianguo Lin, Trevor A. Dean
Summary: A study comparing the Indirect HFQ and Direct HFQ techniques for aluminum alloy forming suggests that grain growth leads to a decrease in mechanical properties during the Indirect HFQ process.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2023)
Article
Nanoscience & Nanotechnology
P. Hidalgo-Manrique, S. Cao, H. R. Shercliff, R. D. Hunt, J. D. Robson
Summary: In the process development trial, two identical automotive parts were formed from commercial 6082 Al alloy using Hot Form Quench (HFQ). The study compared microstructures and hardness at different locations in the parts, finding that the HFQ process did not result in a loss of hardening potential and that microstructures converged after artificial aging. Tensile tests showed that ductility and failure mechanism were insensitive to small differences in grain boundary microstructure observed in the HFQ component.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Meng Liu, Zhongde Shan, Xinya Li, Yong Zang
Summary: The hot tensile deformation behavior of 7075 aluminum alloy sheet was studied at deformation temperatures of 400-475 degrees C and strain rates of 0.001 to 1s(-1). Microstructure evolution and fracture morphology were observed. The hyperbolic sine Arrhenius constitutive equation can characterize the flow behavior of the alloy, and the hot deformation activation energy is 132.52 kJ/mol. The fracture mechanism changes from ductile to brittle with increasing deformation temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Shizhou Wang, Chengbin Shi, Huai Zhang, Li Meng, Jing Li
Summary: The flow behavior, dynamic recrystallization, and microstructure evolution of a newly developed valve alloy were studied. Models were established to predict the flow behavior and DRX behavior, and the optimal processing parameters were determined. The Laves phase and (Ti,Nb)C particles hindered the dynamic recrystallization process, while fine gamma' particles provided nucleation sites for recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Materials Science, Multidisciplinary
Shuwei Duan, Fuqiang Guo, Dongting Wu, Tao Wang, Taiki Tsuchiya, Kenji Matsuda, Yong Zou
Summary: Pre-rolling deformation is more effective than pre-stretching in improving the performance of rolled Al-Cu-Li plates. The pre-rolling process promotes nucleation of the T-1 phase, inhibits formation of other phases, accelerates precipitation kinetics, and enhances mechanical properties. Increasing pre-strain can lead to higher T-1 phase density and improved aging response in Al-Cu-Li alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Zhihao Du, Zanshi Deng, Xiaohui Cui, Ang Xiao
Summary: Experimental research on the electromagnetic hot forming of 7075-T6 aluminum alloy found that with the increase in temperature, the material's deformation behavior changes, with the forming height being optimal at 400 degrees Celsius, showing improved forming performance.
Article
Engineering, Multidisciplinary
FengBo Sun, Shuai Wang, Xin Chen, Rui Zhang, Qi An, Wenqi Liu, LuJun Huang, Lin Geng
Summary: Hot compressive deformation was conducted on a Ti2C-Ti cermet, resulting in the transformation of lamellar Ti precipitates into bimodal size distribution, leading to an increase in strength. This research provides guidance for further deformation and mechanical property improvement of Ti2C cermets.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Tuo Ye, Sawei Qiu, Erli Xia, Fang Luo, Wei Liu, Yuanzhi Wu
Summary: Hot compression experiments were conducted on rolled 7075 alloys with different heat treatments. The results showed that the stress level decreased with increasing temperature during compression, and the original condition alloy had higher strength than the solution-treated alloy at the same deformation condition. The microstructure of the alloy changed after solution treatment, with the presence of equiaxed grains. The density of dislocations decreased with increasing temperature during compression, and the precipitates of the alloy became coarser during higher-temperature deformation.
Article
Materials Science, Multidisciplinary
Lei Yu, Sida Jiang, Fuyang Cao, Hongxian Shen, Lunyong Zhang, Xu Gu, Heqian Song, Jianfei Sun
Summary: This paper investigates the hot compression behavior of co-spray-formed Al-Si/7075 bimetallic gradient alloys. The results show that the flow stress of deposited alloys decreases gradually with a decrease in strain rate and an increase in temperature, following the Arrhenius relationship. The deformation activation energy of the gradient alloy increases gradually from bottom to top in the height direction.
Article
Materials Science, Multidisciplinary
Xiaorong Yang, Xiaodong Zhao, Zhibing Chu, Leifeng Tuo
Summary: The effect of solution and aging treatments on the microstructure and mechanical properties of warm-rolled 7075 alloy was investigated using various characterization techniques. The experimental results showed different microstructures and recrystallization frequencies under different solution and aging conditions. The aged alloys exhibited enhanced strength and plasticity, with the A2 aging route showing the most excellent combination of strength and plasticity.
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
(2023)
Article
Materials Science, Multidisciplinary
Mitsuhiro Okayasu, Masakazu Okawa
Summary: The mechanical and fatigue properties of 6022 aluminum alloy were investigated using U-bend samples fabricated through the hot-stamping process. The alloy exhibited lower internal strain, higher formability, and lower spring back compared to the cold-stamping process. Precipitation hardening occurred after artificial aging, resulting in increased hardness, ultimate tensile strength, and fatigue strength for the hot-stamped alloy. However, the resistance to crack growth was not very high due to weak crack closure and low strain energy.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Materials Science, Multidisciplinary
Liang Wang, Bin Wang, Yiwen Hu
Summary: The microstructure and precipitate characteristics of the X90 hot bend play a crucial role in determining its mechanical properties. After hot induction bending, the microstructure in the bend area undergoes significant changes, resulting in a decrease in strength but an increase in impact toughness compared to the mother pipe.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Qian Zhang, Da Ren, Zhi-pu Liu, Chen-chong Wang, Jian Huang, Wei Xu
Summary: The researchers designed three direct-quench hot rolled steels, successfully increasing strength and reducing production costs by controlling process parameters. They found that lower bainite is superior to granular bainite in terms of strength and low temperature impact toughness. By adjusting grain boundary precipitation, they improved the strength and ductility/toughness of traditional quenched and tempered steels.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Qian Zhang, Quanan Li, Xiaoya Chen, Jian Bao, Ziyi Chen
Summary: The addition of Sn in Mg-Gd-Y-Sn-Zr alloys promotes dynamic precipitation, dynamic recrystallization, and inhibits the formation of high-angle grain boundaries. At different temperature and strain rate conditions, there is a competitive relationship between dynamic recrystallization and flow stress reduction.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yanlong Jia, Huiping Qi, Mengmeng Pei, Zhenjiang Li, Fangcheng Qin, Lu Jia
Summary: The hot deformation behavior coordination of 40Cr/Q345B bimetallic blank was investigated, and processing maps were established to determine the optimum processing window. It was found that under the same deformation conditions, 40Cr exhibited lower overall flow stress than Q345B, and the flow stress difference between the two metals decreased with increasing temperature. The bimetallic blank showed good deformation coordination in the optimum processing window.
Article
Nanoscience & Nanotechnology
Zhiyuan Jing, Weiling Guo, Helong Yu, Shaojun Qi, Xiao Tao, Yulin Qiao, Wei Zhang, Xiaoying Li, Hanshan Dong
Summary: In this study, a simultaneous approach to reducing, nitrogen doping and noble metals coating of graphene oxide (GO) using an active-screen plasma (ASP) technique is reported. By doping noble metals and a small amount of iron and chromium, reduction, nitrogen doping and noble metals coating can be achieved on graphene oxide, resulting in a significant improvement in its electrical properties.
Article
Automation & Control Systems
Xi Wang, Qi Rong, Zhusheng Shi, Jianguo Lin
Summary: In this study, a closed-form solution for predicting springback in creep age forming (CAF) was developed based on the beam theory and Winkler's theory. An efficient compensation method was proposed and validated through finite element simulation and experimental tests. The proposed method, combined with the closed-form solution, successfully achieved the target shape within reasonable iterations for complex flexible tool CAF.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Civil
Wenbin Zhou, Zhusheng Shi, Jianguo Lin
Summary: The elastic-plastic buckling response of panels with grid stiffeners during creep age forming (CAF) has been studied using a semi-analytical method in this research. A simplified model for panels with multiple grid stiffeners under bending has been established, and the effective width has been applied. The study has shown that the proposed semi-analytical method provides accurate predictions of buckling stress and can guide the parameter optimization of grid-stiffened panels in design.
THIN-WALLED STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Zhenxue Zhang, Mikdat Gurtaran, Xiaoying Li, Hio-Ieng Un, Yi Qin, Hanshan Dong
Summary: In this study, N-type and P-type BiTe-based thin films were deposited on silicon, glass, and Kapton HN polyimide foil using magnetron sputtering technique. The morphology, microstructure, and phase constituents of the thin films were characterized by SEM/EDX, XRD, and TEM. The electrical conductivity, thermal conductivity, and Seebeck coefficient were measured by an advanced in-plane test system. The power output (open-circuit voltage and electric current) of the thin films was measured at different temperature gradients using a custom-built apparatus. The impact of deposition parameters and the dimensions of the thin films on the power output were investigated to optimize the thin-film flexible TE device for thermal energy harvesting.
Article
Engineering, Manufacturing
Jiaxin Lv, Junquan Yu, Zhusheng Shi, Weishu Li, Jianguo Lin
Summary: Multi-container extrusion is a novel method for producing wide aluminium components with low force. It can significantly reduce energy and cost while maintaining good welding quality. This study demonstrates its feasibility and effectiveness compared to conventional extrusion methods.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Nanoscience & Nanotechnology
Cheng-Ling Tai, Mien-Chung Chen, Tsai-Fu Chung, Yo-Lun Yang, Sheng-Long Lee, Tzu-Ching Tsao, Zhusheng Shi, Jianguo Lin, Te-Cheng Su, Hsueh-Ren Chen, jer-Ren Yang
Summary: The effects of adding a minor amount of Ag (0.4 wt%) to an Al-5.1Cu-1.0 Mg aluminum alloy on microstructural evolution and mechanical properties were investigated. The study analyzed the different aging conditions for alloys with and without Ag to understand the correlation between microstructure and mechanical properties. The presence of Ag led to the formation of the S2 phase, resulting in faster hardness increment and higher ultimate tensile strength during peak aging.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Chemical
Zhenxue Zhang, Hao Yu, Xiaoying Li, Hanshan Dong
Summary: Titanium alloys have poor tribological properties, but a ceramic TiO2 layer formed on the surface can greatly improve its performance. Pre-depositing a gold layer on the titanium surface promotes the diffusion of titanium and oxygen to form a compact titanium dioxide layer. The distribution of gold particles enhances surface hardness and reduces friction and wear in tribological tests.
Article
Engineering, Manufacturing
Jiaxin Lv, Zhusheng Shi, Junquan Yu, Weishu Li, Jianguo Lin
Summary: A novel multi-container extrusion technology has been proposed for manufacturing thin-walled wide engineering components with reduced force. This study evaluates the bonding quality of the welds formed during the extrusion process and characterizes the metal flow behavior using experimental testing and numerical simulation. The results show that the extrusion process consists of five stages and two criteria, Q and K, are found suitable for evaluating and predicting the welding quality under different extrusion conditions within specific limits.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Materials Science, Multidisciplinary
Xiaoan Yang, G. M. A. M. El-Fallah, Qing Tao, Jun Fu, Chenlei Leng, Jenny Shepherd, Hongbiao Dong
Summary: Steel manufacturing is a complex process with numerous process parameters affecting the mechanical properties of final products. Machine learning models have been used to predict these properties, but interpretability is a challenge. This study uses iGATE to reduce input dimensions and successfully predict mechanical properties of hot-rolled steel plates.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Xiao Tao, Yepeng Yang, Jiahui Qi, Biao Cai, W. M. Rainforth, Xiaoying Li, Hanshan Dong
Summary: Nitrogen-expanded austenite (γN), also known as S phase, is a metastable phase that has been extensively studied on AISI 304/316 stainless steel following low temperature N diffusion treatments. Nitrogen absorption and Si segregation were observed on the surface of FeCrNiSi0.5 medium entropy alloy (MEA) after active screen plasma nitriding (ASPN) treatment. The sluggish Cr segregation in the N-modified MEA surface could be attributed to Si-induced nanoprecipitation and the high equimolar Ni/Cr content in the host matrix.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Manufacturing
Jiaxin Lv, Zhusheng Shi, Junquan Yu, Weishu Li, Jianguo Lin
Summary: This study investigates the effects of geometrical variables on the performance of multi-container extrusion through finite element simulation. Through a three-step design improvement process, an optimized design is obtained which significantly improves the uniformity of the extrudate shape and increases the material yield.
INTERNATIONAL JOURNAL OF MATERIAL FORMING
(2023)
Article
Engineering, Manufacturing
Ruiqiang Zhang, Jun Jiang, Jianguo Lin, Victoria A. Yardley
Summary: Thermo-mechanical uniaxial tensile testing is commonly used to characterize material properties under advanced industrial forming processes. This study investigates the effect of nonuniform temperature distributions on the variability of thermo-mechanical properties and microstructures of tested specimens.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Mechanical
Xi Wang, Zhusheng Shi, Jianguo Lin
Summary: This study systematically investigated the anisotropic behavior of the 3rd generation Al-Li alloys during deformation and creep-ageing, proposing a comprehensive anisotropic material model and its implementation method in numerical simulation, which was verified with four-point bending creep age forming (CAF) tests. The anisotropic behaviors of the material including yielding, hardening, and creep deformation were investigated with uniaxial tensile and creep-ageing tests, and an anisotropic material model based on the modified non-associated quadratic Hill48 yield function was established. The proposed model and implementation method were validated through the comparison between predicted and experimental results for four-point bending CAF tests.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Zhenxue Zhang, Rui Deng, Hanshan Dong
Summary: This study deposited a thin layer of vanadium on the surface of commercial pure titanium samples, which increased the thickness and uniformity of the oxide layer, and enhanced wear resistance and stability.
Article
Materials Science, Multidisciplinary
Xi Wang, Zhusheng Shi, Chaoyang Sun, Jianguo Lin
Summary: This study investigates the anisotropy evolution of a 3rd generation Al-Li alloy after subjecting it to increased tensile pre-deformation at different angles. The research found that the creep deformation and inplane anisotropy decrease with increasing tensile pre-deformation.
MATERIALS CHARACTERIZATION
(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)
