Article
Materials Science, Multidisciplinary
Ding-ge Fan, Kun-kun Deng, Cui-ju Wang, Kai-bo Nie, Quan-xin Shi, Wei Liang
Summary: The addition of trace SiCp reduces the activation energy of the Mg-5Zn alloy, and the optimal deformation conditions were determined based on the processing map. The study also looked at the influence of PDZ size on the activation energy, as well as the effect of SiCp on the dynamic recrystallization behavior.
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
Xiong Zhou, Qichi Le, Chenglu Hu, Dandan Li, Tong Wang, Qiyu Liao, Ruizhen Guo, Chunming Liu, Xiaotao Liu
Summary: The hot deformation behavior of homogenized Mg-1.4Sn-0.93Zn-0.83Ca-0.67Mn-0.39Al alloy was studied, and a constitutive equation and hot processing map were successfully established. The results showed that the hot processing of this alloy should avoid the low-temperature area, and the optimum stable deformation areas were identified. Detailed microstructural studies revealed the crucial role of dynamic recrystallization in the alloy's stability, and the mechanisms involved were identified. In addition, the analysis of in-grain misorientation axes demonstrated the activation of non-basal slips during deformation.
JOURNAL OF ALLOYS AND COMPOUNDS
(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
Chemistry, Physical
Minbao Wu, Wu Wei, Rui Zuo, Shengping Wen, Wei Shi, Xiaorong Zhou, Xiaolan Wu, Kunyuan Gao, Hui Huang, Zuoren Nie
Summary: The hot compression behavior of a homogenized Al-5.2Mg-0.6Mn-0.29Zn-0.16Er-0.12Zr alloy was investigated under different deformation conditions. The relationship between stress, strain rate, and deformation temperature was analyzed, and a constitutive equation was established. The addition of Er and Zr into the alloy resulted in grain refinement, precipitation strengthening, and the formation of Al-3(Er, Zr) phase. Dynamic recovery was dominant during hot deformation, while dynamic recrystallization was inhibited. The alloy showed a high activation energy for hot deformation, attributed to the pinning effect of Er and Zr precipitates. The processing map helped determine the suitable process parameters for hot deformation.
Article
Chemistry, Physical
Lei Zhang, Shuai Yuan, Jinhui Wang, Lijia Chen, Peipeng Jin
Summary: This study investigated the effect of deformation temperature and strain rate on the hot deformation mechanism of an as-cast Mg-5Al-0.6Sc alloy. The results showed that the flow stress decreased with increasing temperature and decreasing strain rate. A constitutive equation was established to accurately predict the hot deformation behavior of the alloy. The optimal processing area was determined based on processing maps, and the microstructure evolution and dynamic recrystallization mechanism of the alloy were analyzed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Bo Che, Liwei Lu, Wei Kang, Jun Luo, Min Ma, Longfei Liu
Summary: The study investigated the hot deformation behavior of a new Mg-6Zn-1Gd-1Er alloy, showing that flow stress increased with increasing strain rate and decreasing temperature. Processing maps were developed to determine optimal parameters, while microstructure analysis revealed different deformation mechanisms and textures at various temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Tao Wei, Yadong Wang, Zhenghua Tang, Sufen Xiao
Summary: The true stress-strain curve of Al-Mg-Si-Cu-Zn alloy under high temperature and high strain rate conditions was obtained, and the constitutive equation was established. The optimum hot working window was determined based on the comparison of predicted values from the model with experimental values.
MATERIALS TODAY COMMUNICATIONS
(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
Xingwei Zheng, Peng Luo, Zhilin Han
Summary: The hot deformation behavior of high-strength Mg-2.5Nd-0.2Zn-1.0Zr alloy was studied through tensile tests, with a constitutive relationship modeled using a hyperbolic sine equation. A processing map was designed, revealing a domain of instability at lower deformation temperatures and higher strain rates, as well as a stable domain with maximum power dissipation efficiency at specific temperature and strain rate values. Different fracture surface morphologies were observed on tensile samples with varying strain rates and deformation temperatures.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Materials Science, Multidisciplinary
Tong Mu, Kui Zhang, Yongjun Li, Xinggang Li, Minglong Ma, Guoliang Shi, Jiawei Yuan, Zhaoqian Sun
Summary: The thermal compression deformation behavior of the Mg-5Zn-1Mn alloy was investigated over a range of temperatures and strain rates. The study established a constitutive model and thermal processing diagrams and analyzed the microstructure evolution and dynamic recrystallization mechanisms. The results showed that the alloy exhibited prominent dynamic recrystallization characteristics, with peak stress improving at lower temperatures and higher strain rates. The study also identified the main recrystallization mechanisms and established suitable processing conditions for large plastic deformation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Daibo Zhu, Deshan Chen, Yang Liu, Bingjie Du, Silong Li, Han Tan, Peng Zhang
Summary: The hot deformation behavior of Cu-2.7Be alloy was investigated through isothermal hot compression experiments, using various models to predict and analyze flow stress behavior, with the artificial neural network model showing the highest accuracy. The study found that the hot processing efficiency of Cu-2.7Be alloys can reach its maximum under specific temperature and strain rate conditions.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Bhomik Ketari Deogade, Nitish Bibhanshu, Rajib Kalsar, Swati Ghosh Acharyya, K. S. Suresh
Summary: The addition of Ce to Mg improves its restricted ductility due to an inadequate number of deformation systems in the hcp structure. Hot compression tests were conducted on Mg-0.5wt% Ce alloy to determine the suitable deformation regime using processing maps. The developed constitutive equation based on hyperbolic-sinusoidal Arrhenius-type equations and Zener-Hollomon parameter showed reasonable predictions of the modified flow stress. The processing map identified a dynamic recovery domain at 673-723 K and 0.001-0.1 s(-1), indicating the suitable hot working regime, as well as unstable zones of flow stress behavior.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Materials Science, Multidisciplinary
Guo-lei Liu, Wei-li Cheng, Lin Luo, Hui Yu, Li-fei Wang, Hang Li, Hong-xia Wang, Jin-hui Wang
Summary: In this study, the dynamic recrystallization (DRX) mechanism and hot-deformation behavior of a novel precipitate-free Mge0.25Bie0.25Sn alloy were investigated. Processing maps and constitutive equations were constructed to predict the hot deformation behavior. The results showed that continuous dynamic recrystallization (CDRX), discontinuous dynamic recrystallization (DDRX), and a transformation of prismatic slip to pyramidal II slip occurred during hot compression.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yu-qin Zhang, Wei-li Cheng, Hui Yu, Hong-xia Wang, Xiao-feng Niu, Li-fei Wang, Hang Li
Summary: This study systematically investigated the twinning behavior, dynamic recrystallization (DRX) mechanism, and texture evolution of extruded Mg-xBi (x=0.5 wt.%, 2.0 wt.%) alloys during hot compression. The results show that the texture types and intensities are closely related to twinning behavior and DRX mechanism. The formation and variation of {10 (1) over bar2} extension twins dominate the early evolution of texture, while the DRX mechanism plays a greater role as the strain increases.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Letter
Materials Science, Multidisciplinary
Shuai-Jun Ding, Li-Dong Xu, Xue-Cheng Cai, Shen-Xiang-Yu Gu, Kang-Kang Wen, Hui Yu, Zheng Chen, Bao-Ru Sun, Sheng-Wei Xin, Tong-De Shen
Article
Chemistry, Physical
Shulong Guo, Hui Yu, Zhifeng Wang, Wei Yu, Weili Cheng, Lixin Huang, Chunhai Liu, Fuxing Yin, Weimin Zhao, Chunling Qin
Summary: This study presents the microstructure and mechanical properties of pure aluminum fabricated by multi-pass caliber rolling. With increasing rolling passes, the temperature, stress, and strain gradually increased, while the maximum rolling force decreased. Dynamic recrystallization resulted in grain refinement and increased dislocation density. The texture of the material also changed during the rolling process.
Article
Metallurgy & Metallurgical Engineering
Yi-hao Luo, Wei-li Cheng, Hui Yu, Hong-xia Wang, Xiao-feng Niu, Li-fei Wang, Hang Li, Zhi-yong You, Hua Hou
Summary: In this study, the creep properties and microstructural characteristics of Mg-5Bi-5Sn (BT55) alloy without and with Mn (BTM550) addition were compared. The results showed that adding Mn improved the creep performance of BTM550 alloy and affected the microstructural characteristics of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Hanqing Xiong, Zhifeng Wang, Linling Ye, Xiaozhen Wang, TianQi Chen, Hui Yu
Summary: The microstructure and electrochemical performance of Mg-6Al-0.5Er and Mg-6Al alloys were investigated, and their discharge performance in assembled Mg-air batteries were evaluated. The as-extruded Mg-6Al-0.5Er alloy exhibited higher corrosion resistance and discharge activity due to its uniform fine grains. Hot extrusion and trace amounts of Er facilitated the dynamic relationship between corrosion product accumulation and detachment, reducing polarization effects during discharge.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
L. Kumar, J. C. Jang, H. Yu, K. S. Shin
Summary: This study investigated the effect of secondary phase on the mechanical property and thermal conductivity of newly developed high-pressure die-cast Al alloys. The results showed that the mechanical properties of the alloys were directly proportional to the fraction of Si addition and secondary phases, while thermal conductivity exhibited an opposite trend. Newly developed S-3 alloys in this study demonstrated excellent mechanical and thermal conductivity compared to other Al alloys reported in the literature.
Article
Nanoscience & Nanotechnology
Yafei Liu, Fuxing Yin, Hui Yu, Jianhang Feng, Puguang Ji, Jianjun Zhang, Zhixian Jiao, Li Liu, Qingzhou Wang
Summary: Multilayer Zn-Al eutectoid alloy (ZA22) was fabricated via accumulative roll bonding (ARB), leading to improved damping and tensile properties. The formation and increase of alloy layers contributed to the enhanced performance of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Zhen-yu Guo, Wei-li Cheng, Hong-xia Wang, Hui Yu, Xiao-feng Niu, Li-fei Wang, Hang Li, Hua Hou
Summary: A novel low-alloyed Mg-2Sn-2Bi-0.2Mn alloy was successfully designed and extruded, demonstrating a good balance between strength and ductility. The bimodal-sized grain structure played a crucial role in achieving this balance, as analyzed in the study.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Jianjun Zhang, Fuxing Yin, Binan Jiang, Qingzhou Wang, Hui Yu, Zhixian Jiao, Li Liu, Puguang Ji, Yafei Liu
Summary: A novel in situ composite inoculant was fabricated and its effects on the microstructure, damping and mechanical properties of the Zn-Al eutectoid alloy were studied. The results showed that the inoculant had an efficient refining effect on the alloy and improved its tensile strength, elongation, hardness and damping at high temperatures. However, the damping at low temperatures decreased. This study provides ideas and theoretical basis for the design of novel inoculants and the fabrication of high damping alloys with excellent mechanical properties.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Review
Chemistry, Physical
Chao Jin, Zhiyuan Liu, Wei Yu, Chunling Qin, Hui Yu, Zhifeng Wang
Summary: This review summarizes the microstructure characteristic, mechanical properties, and recent research progress in the biocorrosion and biocompatibility of biodegradable Mg-Zn-Ca-based metallic glasses. It also provides an outlook on the fabrication routes, composition design, structure design, and reinforcement approaches in this field.
Article
Materials Science, Multidisciplinary
Hui Yu, Junchao Ren, Shaoming Kang, Wei Yu, Zhifeng Wang, Jianhang Feng, Qingzhou Wang, Puguang Ji, Xin Zhang, Fuxing Yin
Summary: In this study, the high strain rate response of Mg-6wt%Er alloys with 1wt%Zn addition was investigated. It was found that the addition of Zn can enhance the strength of the alloy. The interaction between SFs and dislocations was analyzed, and it was observed that LAGBs can more easily transform into HAGBs at a high strain rate.
Article
Materials Science, Multidisciplinary
Hui Yu, Xin Yang, Wei Yu, Youngmin Kim, Shaoming Kang, Lixin Huang, Bongsun You, Chunhai Liu, Kwangseon Shin, Weimin Zhao
Summary: This study investigates the microstructure and corrosion behavior of AM60 alloys with/without Ca and Y addition under gravity casting and high-pressure die-casting. It is found that the AM alloy produced by high-pressure die-casting has better corrosion resistance. The study provides insights for developing high corrosion-resistant magnesium alloys using different casting methods.
Article
Materials Science, Multidisciplinary
Lailesh Kumar, Jae Cheol Jang, Hui Yu, Kwang Seon Shin
Summary: The effects of Cr and Ti on the thermal conductivity and mechanical properties of Al-7Si-3Mg die-casting alloys were investigated in this study. The results showed that the addition of Cr and Ti can change the fraction of precipitated phases, leading to changes in the mechanical properties and thermal conductivity of the alloys. The alloy with the addition of 4.39 wt%Mg and 0.45 wt%Cr showed the highest yield strength and ultimate tensile strength, as well as optimal thermal conductivity. Controlling the fraction of the second phase is important for simultaneously improving the mechanical property and thermal conductivity of the alloy.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hui Yu, Dongliang Wang, Ya Liu, Yu Liu, Lixin Huang, Binan Jiang, Sunghyuk Park, Wei Yu, Fuxing Yin
Summary: A single-pass gradient caliber rolling was performed on a conical-shaped AZ31 Mg alloy to obtain a transitional microstructure with strain ranging from 0 to 30%. The results showed that the recrystallization extent increased with strain. Different recrystallization mechanisms, including particle stimulated nucleation, extension twinning, and dynamic recrystallization, were observed at various strain levels. The texture of the deformed samples gradually transitioned from the initial basal texture to a non-fiber component and eventually formed a fiber orientation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Hui Yu, Ya Liu, Yu Liu, Dongliang Wang, Yuling Xu, Binan Jiang, Weili Cheng, Weineng Tang, Fuxing Yin, Wei Yu
Summary: This study investigates the microstructural evolution and mechanical properties of Mg-3Al-1Bi alloys produced by twin-roll casting and hot rolling, and compares them with AZ31 alloy. The addition of Bi in twin-roll cast alloys reduces central segregation and introduces thermally stable Mg3Bi2 phases. These phases lead to particle stimulated nucleation and dynamic recrystallization, resulting in grain refinement and uniform microstructure in the alloys. However, these brittle phases also act as cracking sources and degrade elongation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
