Article
Materials Science, Multidisciplinary
Hui Yi, Jian Ding, Changan Ni, Jiahang Dai, Ying Tang, Xueguang Chen, Kaihong Song, Xingchuan Xia
Summary: By studying the hot deformation behavior and intrinsic machinability of Al-0.5Mg-0.4Si-0.1Cu alloy, an accurate constitutive equation and processing map were established, and the optimal process parameters of the alloy were optimized.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Mingyang Zhou, Xiaohui Liu, Huifang Yue, Shichao Liu, Lingbao Ren, Yong Xin, Liangliang Lyu, Yanli Zhao, Gaofeng Quan, Manoj Gupta
Summary: The hot deformation behavior of a hybrid SiC and CNTs reinforced AZ61 alloy composite was investigated through hot compacting at various strain rates and temperatures. The composite exhibited typical metallic materials flow behavior, with two instability zones and two safe zones identified. Dynamic recrystallization occurred in the safe zones, and SiC particulates were found to promote this process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Wei-Hsun Liao, Che-Wei Tsai, Yu-Chih Tzeng, Woei-Ren Wang, Chi-San Chen, Jien-Wei Yeh
Summary: The hot deformation behavior of equimolar CoCrFeNi HEA was investigated through hot compression, and processing maps were constructed using a dynamic materials model. The experimental results were consistent with the contour map, indicating a well-deformed region at 1223 K and 10-3 s-1 with a power dissipation parameter of 0.3.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Bo Li, Yonghua Duan, Shanju Zheng, Mingjun Peng, Mengnie Li, Hengyong Bu
Summary: Hot compression tests were conducted to evaluate the hot deformation behavior of 60Mg-30Pb-9.2Al-0.8B alloy. The Arrhenius constitutive equation and processing map with strain compensation were established based on the dynamic material model. The results showed three stages in the stress-strain curves during hot compression, with characteristics of work hardening, dynamic recovery, and dynamic recrystallization. The improved Arrhenius strain compensation constitutive model had higher precision than the traditional model. Optimum hot working parameters were determined based on the analysis of the processing map.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Hua Wang, Dengfeng Yin, Ming-Chun Zhao, Yan Tian, Andrej Atrens
Summary: Hot deformation behavior and associated microstructural evolution in a quaternary Al-Cu-Li-Zn alloy were studied under different deformation conditions. The study found that dynamic recrystallization (DRX) was influenced by grain orientation and particle simulated nucleation (PSN) was the primary mechanism of DRX. Additionally, only a small fraction of DRX grains appeared under certain temperature and strain rate conditions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Hemiao Jiang, Hongying Li, Dianyuan Huang, Yinghui Zhao, Jiwen Liu, Qing Gao, Hang He, Ximao Liu
Summary: In this study, the hot deformation behavior of 26CrMo7S steel was analyzed using a thermal simulator. The Arrhenius constitutive model was built and its accuracy was verified through error analysis. Hot processing maps were constructed to analyze the processing zone of the steel. The microstructure of the processing zones was observed and verified using electron backscattered diffraction (EBSD). The results show that the interaction of work hardening and dynamic softening influences the hot deformation behavior of 26CrMo7S steel.
Article
Materials Science, Multidisciplinary
Ali Shabani, Mohammad Reza Toroghinejad, Marieh Aminaei
Summary: The hot deformation behavior of FeCrCuMnNi high entropy alloy was studied through hot compression tests in the temperature range of 500-970 degrees C and strain rates of 0.1, 0.01, and 0.001 s-1 up to a strain of 0.6. An Arrhenius-type equation was used to evaluate the deformation behavior and propose a constitutive equation. The alloy exhibited typical hot deformation behavior with an activation energy of approximately 250 kJ/mol, mainly governed by Cu lattice diffusion. Discontinuous dynamic recrystallization (dDRX) was the main restoration phenomenon, with grain boundary sliding and dislocation sliding as the main active mechanisms. Processing maps based on energy efficiency (η) and flow instability (ξ) were plotted, revealing an instability region between 750 and 850 degrees C at different strain rates, which might be directly related to the formation of a hard sigma phase within this temperature range.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Chuan Lei, Qudong Wang, Huaping Tang, Tianwen Liu, Zhongyang Li, Haiyan Jiang, Kui Wang, Mahmoud Ebrahimi, Wenjiang Ding
Summary: Isothermal uniaxial compression experiments were conducted on homogenized Al-5Mg-3Zn-1Cu alloy to investigate its hot deformation behavior. A strain-compensated constitutive model was established to predict flow stress with high accuracy. The dominant deformation mechanism of the alloy was identified as dislocation climbing, and processing maps were constructed to identify workable and unstable domains in different temperature and strain rate ranges.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
D. Mirahmadi, K. Dehghani, A. Shamsipur, A. Kalaki
Summary: The hot deformation characteristics of Cu-2Be alloy were studied between the temperatures of 650-950 degrees C and strain rates of 0.001-1 s-1. A constitutive analysis and adaptive-network-based fuzzy inference system (ANFIS) were used to accurately predict the hot deformation behavior. The results showed that the optimal hot deformation conditions for the alloy were at temperatures of 850-950 degrees C and strain rates of 1-10 s-1, leading to a more uniform and fine grain structure due to discontinuous dynamic recrystallization (DDRX).
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
B. Ebrahimpourghandi, R. Mahmudi
Summary: The hot deformation behavior and constitutive analysis of the as-cast and extruded Mg-2.5Gd-0.5Zr alloy were compared using the shear punch testing (SPT) method. The results showed that grain boundary sliding was the prevailing deformation mechanism. The efficiency of power dissipation exceeded 30% in most areas for both cast and wrought conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jing Xu, Xuemao Dong, Zhongxue Feng, Jialiang Dong, Caiju Li, Jianhong Yi
Summary: The hot deformation behavior of the Cu-20Ni-20Mn alloy was investigated through isothermal compression tests. The results showed that the flow stress of the alloy decreased with increasing temperature and decreasing strain rate. A constitutive equation and processing maps were established to determine the optimum processing parameters for the hot deformation of the alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Zhijun Yang, Weixin Yu, Shaoting Lang, Junyi Wei, Guanglong Wang, Peng Ding
Summary: The hot deformation behaviors of a new Ti-6Al-2Nb-2Zr-0.4B titanium alloy were evaluated and a constitutive equation describing the change of deformation temperature and flow stress with strain rate was established. The study found that the deformation mechanism of the alloy varies under different temperatures and strain rates.
Article
Materials Science, Multidisciplinary
Jinyu Wang, Jiajun Zhao, Yuhao Jia, Xiaoguang Fan, Feng He, Xian Luo, Junjie Li, Zhijun Wang, Jincheng Wang
Summary: This study investigated the hot deformation behavior of the Ni61Fe10Cr10Al17Mo2 alloy and revealed the relationship between flow stress and deformation temperature and strain rate. Constitutive equations were constructed to describe this relationship. A hot processing map was created using a dynamic material model and instability criterion. The deformed microstructures and dynamic recrystallization of the alloy were also investigated. An optimal processing route was obtained based on the processing map.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Chunyu Dong, Xianming Zhao
Summary: The DRX behavior and microstructure evolution of HSLA steel were investigated through isothermal compression experiments. The flow stress was found to increase with the strain rate and decrease with the deformation temperature. A constitutive equation was established based on peak stress, and the deformation activation energy was determined. Processing maps were constructed to analyze the flow instability under different conditions. The nucleation mechanism and grain size of DRX were also studied.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Deqing Ma, Shuai Yuan, Shiyu Luan, Peipeng Jin, Hengrui Hu, Jinhui Wang, Xiaoqiang Li
Summary: The hot deformation behavior of as-cast Mg-2Zn-0.5Mn-0.2Ca alloys was investigated by hot compression tests. The flow stress was found to increase with higher strain rates and lower temperatures. A constitutive equation was obtained, and the average activation energy was calculated. A processing map was developed, and the optimal processing parameters were determined. The microstructural analysis revealed significant differences between instability areas and stable areas, although both had a similar texture. The slip system in deformed grains was determined, and the main dynamic recrystallization mechanism was identified as discontinuous dynamic recrystallization (DDRX). The proportion of DRX increased with lower strain rates and higher deformation temperatures, weakening the texture strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Mingjia Wang, Chaoyang Sun, M. W. Fu, Zhongli Liu, Chunhui Wang
MATERIALS & DESIGN
(2020)
Article
Thermodynamics
Xiaochuan Liu, Mateusz Kopec, Omer El Fakir, Haitao Qu, Yaoqi Wang, Liliang Wang, Zhiqiang Li
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2020)
Review
Automation & Control Systems
Dimitrios Chantzis, Xiaochuan Liu, Denis J. Politis, Omer El Fakir, Teun Yee Chua, Zhusheng Shi, Liliang Wang
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Kehuan Wang, Mateusz Kopec, Shupeng Chang, Bao Qu, Jun Liu, Denis J. Politis, Liliang Wang, Gang Liu
MATERIALS & DESIGN
(2020)
Article
Materials Science, Multidisciplinary
C. H. Wang, C. Y. Sun, L. Y. Qian, W. Cai, J. Jiang, Y. Xiao
Summary: The study investigates the dynamic mechanical behavior induced by adiabatic temperature rise of Fe-Mn-Al-C twinning-induced plasticity steel through dynamic tensile testing and a dynamic constitutive model. The results show that the more active twinning at higher strain rates contributes to plasticity, while the decreasing plasticity from dislocation slip leads to a low strain hardening rate. In the later stage, adiabatic heating promotes dislocation annihilation through enhanced dynamic recovery, resulting in negative rate-dependent hardening.
MATERIALS SCIENCE AND TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Zexing Su, Chaoyang Sun, Mingjia Wang, Lingyun Qian, Xintong Li
Summary: A unified internal state variable (ISV) model was developed to predict the microstructure evolution during the hot working process of AZ80 magnesium alloy. The model incorporated the interactive effects of material hardening, recovery, and dynamic recrystallization on the characteristic deformation behavior. The model parameters were calibrated based on experimental data analysis and genetic algorithm optimization. The predicted results matched well with experimental results, and the model was implemented in the finite element software DEFORM-3D to simulate the hot compression and equal channel angular extrusion processes. The study captured the heterogeneous microstructure distributions and dislocation density evolution in different deformation zones. This research provides a theoretical solution for the hot working problems of magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Jie Zhao, Kehuan Wang, Liangxing Lv, Liliang Wang, Denis J. Politis, Gang Liu
Summary: This paper presents an integrated crystal plasticity finite element model of near-alpha titanium alloys during non-superplastic hot deformation conditions. The model considers grain boundary sliding, dynamic recrystallisation, and void evolution. The simulation shows the existence of two high microscopic strain regions in the alpha phase, which promote continuous and discontinuous dynamic recrystallisation. Methods to improve the macroscopic plastic formability are also proposed.
Article
Chemistry, Physical
Xiaochuan Liu, Bozhou Di, Xiangnan Yu, Heli Liu, Saksham Dhawan, Denis J. Politis, Mateusz Kopec, Liliang Wang
Summary: This study establishes the compatibility relationship on the failure criteria between aluminium and polymer, and develops a mechanics-based model to predict the Forming Limit Diagram (FLD) of a three-layered sandwich panel. A case study on a sandwich panel consisting of AA5754 aluminium alloy face layers and a PVDF core layer suggests that the loading path of aluminium is linear and independent of the punch radius, while the failure risk of PVDF increases with a decreasing radius and an increasing strain ratio.
Article
Engineering, Mechanical
Wang Cai, Chaoyang Sun, Chunhui Wang, Lingyun Qian, Yuemin Li, M. W. Fu
Summary: This research investigated the deformation mechanisms and fracture characteristics of TWIP steels at high temperature. It revealed the influence of GB angle, grain size, and microvoids on the initiation and propagation of microcracks along grain boundaries.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Metallurgy & Metallurgical Engineering
Xiao Yang, LeMeng Zhang, Heli Liu, Denis J. Politis, Mohammad M. Gharbi, Huifeng Shi, LiLiang Wang
Summary: This article investigates the behavior of lubricants in hot metal forming processes and develops a lubricant model to predict the changes in friction characteristics. The effectiveness of the model is validated through friction tests.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Xiao Yang, Heli Liu, Saksham Dhawan, Denis J. Politis, Jie Zhang, Daniele Dini, Lan Hu, Mohammad M. Gharbi, Liliang Wang
Summary: Digitally-enhanced technologies are transforming the manufacturing industry by providing unprecedented volumes and precision of data for analysis and evaluation. This study presents an approach for digitally-enhanced lubricant evaluation using vast amounts of experimentally verified data, allowing for intuitive and quantitative assessment of lubricant performance.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Pengfei Ji, Jin Zhang, Jinghan Yang, Yongle Zhao, Yong Lian, Xiaomin Yuan, Chaoyang Sun, Shitao Dou
Summary: This paper investigates the influence of different uphill quenching processes on residual stress in AZ31B plates. The results show that the liquid nitrogen-boiling water process can significantly reduce residual stress and increase hardness while maintaining the mechanical properties of magnesium alloy.
Article
Engineering, Mechanical
Jingdong Sun, Yong Shang, Kai Wang, Chunhui Wang, Fei Ma, Chaoyang Sun
Summary: The wear evolution suggests that abrasive wear is the primary mechanism for disc cutter wear. Considering the uneven distribution of rolling force on the cutterhead, the relative installation radius is introduced to reflect the influence of installation radius on rolling force, and the CSM rolling force model is corrected accordingly. To accurately predict disc cutter wear, the relative sliding distance between disc cutters and rock is derived based on the corrected rolling force and contact theory. The research of parameters provides a theoretical basis for optimizing excavation parameters and reducing cutter wear.
Article
Engineering, Manufacturing
Xiao Yang, Qunli Zhang, Yang Zheng, Xiaochuan Liu, Denis Politis, Omer El Fakir, Liliang Wang
Summary: The lubricant behavior at elevated temperatures was investigated through pin-on-disc tests between P20 tool steel and AA7075 aluminum alloy. The evolution of the coefficient of friction (COF) was observed to consist of three distinct stages with different friction mechanisms, influenced by temperature, contact pressure, and sliding speed. In the final stage, lubricant breakdown occurred due to increased temperature, contact pressure, sliding speed, and decreased initial lubricant volume, leading to high friction values at the interface.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Xiaochuan Liu, Xiao Yang, Yuhao Sun, Denis J. Politis, Ken-ichiro Mori, Liliang Wang
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING
(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)
