Article
Materials Science, Multidisciplinary
J. A. Liu, D. Song, L. R. Zhang, X. Z. Yang, X. Y. Zhu, W. B. Sun, F. Y. Chen
Summary: In this study, open-cell Mg composite foams reinforced with in-situ Mg2Si were prepared. The complex modification and holding time of solution heat treatment significantly improved the microstructure and compressive properties of the composite foams. The results showed that the morphology of Mg2Si was effectively changed, leading to increased compressive strength and energy absorption capacity of the composite foams. The compressive strength and energy absorption capacity were further improved with longer holding time of solution heat treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Yong Chen, Yuan Yao, Shengli Han, Xiaowei Feng, Tiegang Luo, Kaihong Zheng
Summary: In this study, xTC4/AZ31 composites were fabricated using spark plasma sintering and hot extrusion. The microstructure evolution and tensile properties of the composites were investigated, and the strengthening mechanism of nano-TC4 on magnesium matrix composites was analyzed. The results showed that the addition of 1 wt.% TC4 significantly improved the yield strength, ultimate tensile strength, and failure strain of the magnesium matrix composites. The improvement in strength was attributed to grain refinement and good interfacial bonding, while the increase in elongation was attributed to grain refinement and a weakened texture.
Article
Materials Science, Multidisciplinary
Guoqin Wu, Zhaocan Li, Jianmin Yu, Yunfang Liu, Zhimin Zhang, Beibei Dong, Huagui Huang
Summary: This study investigated the effects of different repetitive upsetting extrusion (RUE) deformation paths on the microstructures and mechanical properties of Mg-9.32Gd-3.72Y-1.68Zn-0.72Zr (wt%) alloy. The RUE ratio and cumulative strain have an impact on the dynamic recrystallization process and precipitation of b phases. The alignment of LPSO phase and adjustment of deformed grain size can enhance the alloy's strength and ductility.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Yunpeng Meng, Hua Zhang, Boyu Lin, Lifei Wang, Jianfeng Fan, Liwei Lu, Xin Zhou, Hailiang Huang, Shanzhou Zhang, Hans Jorgen Roven
Summary: The AZ31/GW103K bimetal composite rods fabricated by co-extrusion exhibit favorable bonding interfaces, with the co-extrusion promoting grain growth in the AZ31 sleeve and refining grains in the GW103K core. The composite rod has higher compressive yield strength and compressive strength compared to the monolithic AZ31 rod, and its plasticity is similar to that of the monolithic AZ31 rod. As the volume fraction of GW103K in the composite rod increases, its strength gradually increases. Co-extrusion enhances the texture intensity of both the AZ31 sleeve and the GW103K core, without changing their texture types significantly.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Beibei Dong, Zhimin Zhang, Jianmin Yu, Mu Meng, Yong Xue, Huifang Zhang, Xi Zhao, Xianwei Ren, Shaobin Bai
Summary: This paper comprehensively investigates the microstructure evolution and mechanical properties of industrial-scale Mg alloys. The results reveal heterogeneous microstructure and anisotropic texture and mechanical properties of the RUEed samples. The edge region along the extrusion direction shows superior tensile strength due to smaller grain size and higher area fraction of dynamic recrystallized grains.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Metallurgy & Metallurgical Engineering
Zhengran Liu, Xi Zhao, Kai Chen, Siqi Wang, Xianwei Ren, Zhimin Zhang, Yong Xue
Summary: Isothermal repetitive upsetting extrusion (RUE) was used to process ZK60 magnesium alloy at 380 degrees C, resulting in refined grain size and improved elongation and superplasticity of the alloy. Texture evolution played a role in reducing the anisotropy of the alloy by changing the initiation ability of slip in different directions.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Yixue Dong, Peng Xiao, Yimin Gao, Qiqiang Zhao, Haocheng Yang
Summary: This study investigates the effects of Sr addition on the morphology and size of Mg2Si phase, alpha-Mg matrix grains, as well as the mechanical properties of Mg2Si/AZ61 composites. The results show that Sr addition can modify the morphology of eutectic Mg2Si phases and refine the size of alpha-Mg matrix. Additionally, the addition of Sr improves the strength and ductility of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yingchen Wang, Hongyuan Shi, Peng Zhou, Yujin Tang, Jia Liu, Liqiang Wang, Jie Li, Yuanfei Fu, Weijie Lu
Summary: Gradient TiC/Ti6Al4V composites were successfully prepared by friction stir processing, with systematic characterization of their microstructure and mechanical properties. High temperature rapid heat treatment resulted in maximum hardness of the sample, with dissolution of elements near TiC particles during rapid heating leading to increased hardness.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Lun Yang, Tao Wang, Chao Liu, Yunzhu Ma, Lei Wu, Huanyuan Yan, Xinyue Zhao, Wensheng Liu
Summary: Magnesium and its alloys are attractive materials in automotive and aerospace fields due to their low density and high strength. Powder metallurgy technology can reduce deformation and processing of magnesium alloys during preparation process. A high-performance AZ31 magnesium alloy was prepared via vacuum hot-press sintering, and the effects of sintering temperature on the alloy's structure and mechanical properties were investigated. The results showed that at an optimal sintering temperature, the alloy exhibited high strength and favorable elongation due to pressure applied during the sintering process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Yu Ren, Pengwan Chen, Zheng Li, Ziyue Zhang, Yanwei Lv, Chang Zhang
Summary: Refractory metal particles were used to reinforce a titanium matrix composite in this study. The resulting 20W(P)/Ti composite demonstrated excellent mechanical properties, attributed to multiple strengthening mechanisms and the suppression of adiabatic shear sensitivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Hui Wang, Zhuoming Xie, Xiang Cheng, Ke Jing, Linchao Zhang, Junfeng Yang, Rui Liu, Le Han, Lei Cao, Xianping Wang, Qianfeng Fang, Changsong Liu, Xuebang Wu
Summary: The microstructural evolution and thermal fatigue resistance of two tungsten composites, WZC and WYO, were investigated under cyclic heat loads. The WZC composite showed better thermal shock resistance than WYO due to the intrinsic properties of the particles. The study also revealed an interesting crack mechanism in tungsten composites. These findings are important for evaluating the thermal fatigue resistance of composites and their application in fusion reactors.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Cheng Zhang, Cheng Peng, Jin Huang, Yanchun Zhao, Tingzhuang Han, Guangang Wang, Liang Wu, Guangsheng Huang
Summary: The research involved preparing AZ31/Mg-Sc laminated composites with gradient grain structure through hot extrusion, with a more pronounced gradient microstructure observed at 350 degrees Celsius. The nanoscale hardness of the Mg-1Sc alloy was enhanced through fine-grain and solution strengthening of the surface AZ31 fine-grain layer. The strength of the Mg-1Sc alloy was improved by fine-grain and dislocation strengthening of the surface AZ31 fine-grain layer, while the elongation was increased by improving microstructure distribution.
Article
Materials Science, Multidisciplinary
Wenlong Xu, Jianmin Yu, Beibei Dong, Qiang Wang, Xubin Li, Mu Meng, Ping Xu, Zhimin Zhang
Summary: There are currently significant technical challenges in achieving microstructure and mechanical properties uniformity in large-size billets prepared by severe plastic deformation technology. This paper discusses the influence of two reciprocating upsetting-extrusion (RUE) deformation methods, namely isothermal temperature RUE (IT-RUE) and decreasing temperature RUE (DT-RUE), on the microstructure and mechanical properties uniformity of GWZ932K alloy. The results show that both IT-RUE and DT-RUE can effectively refine grains, with IT-RUE producing billets with uniform microstructure and mechanical properties from center region to edge region, while DT-RUE shows a gradient characteristic. Changes in deformation temperature do not affect the occurrence of dynamic recrystallization (DRX), and both continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) mechanisms contribute to grain refinement.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Metallurgy & Metallurgical Engineering
Junliu Ye, Xianhua Chen, Huan Luo, Jie Zhao, Jianbo Li, Jun Tan, Hong Yang, Bo Feng, Kaihong Zheng, Fusheng Pan
Summary: In this study, Ti particles reinforced AZ31 magnesium matrix composites were prepared by ultrasonic-assisted stir casting with hot extrusion, and the composites showed simultaneous improvement in strength, elongation and wear resistance. The enhanced mechanical properties were attributed to the grain refinement and strong interfacial bonding, while the improved wear resistance was closely related to the increased hardness of composites and the formation of protective oxidation films.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Xingyu Bai, Conglin Hu, Guobing Wei, Guo Li, Hao Chen, Bin Li
Summary: This study fabricated GNP/AZ31 composites using one-pass friction stir processing and analyzed their microstructure and mechanical properties through various techniques. The results showed that FSP could refine grains, strengthen basal texture, and improve the mechanical properties of the composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Gaopeng Xu, Kui Wang, Xianping Dong, Haiyan Jiang, Qudong Wang, Bing Ye, Wenjiang Ding
Article
Materials Science, Multidisciplinary
Liyang Wang, Ruijuan Qi, Bing Ye, Yang Bai, Rong Huang, Haiyan Jiang, Wenjiang Ding
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Zhongyang Li, Qudong Wang, Huaping Tang, Tianwen Liu, Chuan Lei, Haiyan Jiang, Wenjiang Ding
Summary: The study showed that the microstructure and mechanical properties of squeeze-cast Al-5Mg-3Zn-1Cu-1Si alloy vary along the depth direction under both squeeze-cast and peak-aged conditions. After peak aging, the strength of the alloy increased while the ductility improved.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Yang Bai, Bing Ye, Jing Guo, Liyang Wang, Xiangyang Kong, Wenjiang Ding
MATERIALS CHARACTERIZATION
(2020)
Article
Metallurgy & Metallurgical Engineering
Jia-ying Zhang, Li-jie Zuo, Jian Feng, Bing Ye, Xiang-yang Kong, Hai-yan Jiang, Wen-jiang Ding
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2020)
Article
Nanoscience & Nanotechnology
Yang Bai, Bing Ye, Liyang Wang, Beibei Zhao, Xin Yu, Yong Lu, Xiangyang Kong, Wenjiang Ding
Summary: A novel Mg-6Y-3Zn-1Al alloy was successfully prepared through high pressure die-casting method, showing a microstructure of equiaxed alpha-Mg grain, block and irregular (Al,Zn)2Y phases, as well as a honeycomb-shaped LPSO phase. Mechanical tests demonstrated superior yield strength, ultimate tensile strength, and elongation, with dominant contribution mechanisms of grain boundary strengthening, solid solution strengthening, and second phase strengthening. The abnormal work-hardening effect in stage III contributed to the superior ultimate tensile strength and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Liyang Wang, Bing Ye, Yang Bai, Beibei Zhao, Wenjiang Ding
Summary: Micro-additions of Zr and Sc, as well as combined addition, are effective in improving the strength and grain characteristics of Al-Ce alloys through gravity casting. The formation of nanoscale precipitates after heat treatment contributes to enhancing the alloy performance significantly.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Liyang Wang, Hongquan Song, Bing Ye, Beibei Zhao, Yang Bai, Wenjiang Ding
Summary: The Al-8Ce-3Y high pressure die-casting alloy exhibits excellent mechanical properties at high temperatures, attributed to the formation of stable Al-4(Ce,Y) phase with the addition of Y.
Article
Materials Science, Multidisciplinary
Huisheng Cai, Qudong Wang, Yang Zhao, Jianguo Peng, Nannan Zhang, Haichuan Wang, Michel Suery, Jean Jacques Blandin
Summary: By adding 1wt% of Ca to AM50 magnesium alloy, the ignition temperature of the alloy can be significantly increased to 832 degrees C. The ignition-proof holding time at a certain temperature is shorter for the alloy with added calcium, and a dense bilayer oxide film is formed on the surface of the alloy, effectively protecting it.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Yang Bai, Xin Yu, Liyang Wang, Nan Zhang, Bing Ye, Weili Cheng, Xiangyang Kong
Summary: A new high pressure die-casting (HPDC) Mg-RE based alloy with excellent heat resistance has been successfully prepared. It exhibits high tensile strength and low creep rate, which can be attributed to the fine-grained structure, co-segregation of Y and Zn atoms, and coherent LPSO phase with networking distribution. This newly developed alloy shows promising prospects for automotive powertrain components.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Beibei Zhao, Jiaying Zhang, Bing Ye, Liyang Wang, Yang Bai, Xin Yu
Summary: The microstructure, mechanical properties, and thermal stability of a high-pressure die casting (HPDC) Al-12Si-Sc alloy with 0.1 wt% Sc addition are investigated. Compared to the commercial A380 alloy, the alloy exhibits a significant refinement in the microstructure of alpha-Al and eutectic Si. Additionally, the beta-Fe phase in the Al-12Si-Sc alloy shows smaller size and lower volume fraction. The alloy demonstrates improved ductility and strength, with an elongation of 6.7% and an ultimate tensile strength of 332 MPa in the as-cast state.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Beibei Zhao, Bing Ye, Liyang Wang, Yang Bai, Xin Yu, Qigui Wang, Wenying Yang
Summary: The mechanical behavior and microstructure evolution of a newly developed high strength die casting Al-13Si0.25Cu alloy were investigated in different conditions, showing that ageing treatment can improve the yield strength while thermal exposure can result in reduced hardness and increased ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Review
Materials Science, Multidisciplinary
Mahmoud Ebrahimi, Qudong Wang, Shokouh Attarilar
Summary: Magnesium and its alloys and composites, with their lower density compared to aluminum and steel, are important engineering materials in various industries, especially in transportation and aerospace applications. However, their relatively low mechanical properties limit their further advanced applications, which can be improved by severe plastic deformation methods such as cyclic extrusion compression (CEC). However, the understanding of the deformation mechanisms and microstructural evolutions induced by CEC in magnesium is still limited. Hence, this study aims to investigate the properties of CEC-processed magnesium alloys and composites, focusing on their microstructural and mechanical properties. Various techniques of CEC are explained, followed by discussions on the deformation behavior and effects of CEC on microstructural evolutions and grain refinement mechanisms, as well as other properties such as superplasticity, tribological behavior, biocorrosion response, and solid-state recycling.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Liyang Wang, Bing Ye, Wei Huang, Wenjiang Ding
Summary: Despite the wide range of applications and studies on eutectic alloys, there is currently no available model to describe the contribution of morphology on the strength of the eutectic structure. Researchers have derived a eutectic strengthening model, based on the Brown model and Taylor-Orowan's equation, which can effectively predict the yield strength of eutectic alloys and provide insights into eutectic strengthening. The model reveals the relationship between yield strength and eutectic features such as slip parameter, effective shear modulus, second phase volume fraction, and eutectic spacing, and its predictions are in good agreement with experimental measurements for different eutectic alloys.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Chuan Lei, Qudong Wang, Mahmoud Ebrahimi, Dezhi Li, Huaping Tang, Nannan Zhang, Huisheng Cai
Summary: This study investigated the hot deformation behavior of an as-cast Al-5.07Mg-3.01Zn-1.11Cu-0.01Ti alloy through isothermal uniaxial compression experiments and established three-dimensional processing maps. The results showed that the alloy had good workability in the temperature range of 385-450 degrees C and strain rate range of 0.001-0.26 s(-1), with dynamic recovery and dynamic recrystallization as the main softening mechanisms in hot forming.
