Article
Metallurgy & Metallurgical Engineering
Janet M. Meier, Jiashi Miao, Song-Mao Liang, Jun Zhu, Chuan Zhang, Josh Caris, Alan A. Luo
Summary: This study conducted key experiments and CALPHAD calculations to provide critical understanding of high-strength Mg-Gd-Y-Zn alloys. The experimental results were used to validate and improve the thermodynamic database of this alloy system, and accurately predict the development of promising high-strength Mg-Gd-Y-Zn alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Z. Aalipour, A. Zarei-Hanzaki, A. Moshiri, H. R. Abedi, Daudi Waryoba, A. Kisko, L. P. Karjalainen
Summary: The microstructure and microtexture changes of an extruded and annealed magnesium alloy were investigated under different strain and processing conditions. The results showed that the material underwent noticeable refinement even at low applied compressive strain. Recrystallization process was completed at a true strain of 0.3, and grain refinement was attributed to the LSN and CDRX mechanisms. At higher strain levels, most grains were found in deformed states and the microtexture only changed in terms of intensity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Zhiyu Chang, Qingchen Deng, Qiao Lan, Jian Feng, Daquan Li, Baoliang Liu, Yujuan Wu, Liming Peng, Wenjiang Ding
Summary: This study characterized and analyzed the microstructure and mechanical properties of Mg alloy castings prepared by rheo-diecasting and compared them with conventional diecasting. The solution-treated rheo-diecast alloy showed a significant improvement in elongation but a decrease in room-temperature tensile mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Cong Dang, Xiaoxu Dou, Jingfeng Wang, Di Yu, Jinxing Wang, Ruopeng Lu, Hua Hou, Yuhong Zhao
Summary: Different solution treatments at different temperatures were conducted on the Mg-9.55Gd-2.27Y-1.28Zn-0.55Zr-0.11Nd alloy, resulting in different phase constitutions. The Mg3RE-type eutectic phases transformed into long period stacking order (LPSO) phases with various morphologies after solution treatment. Increasing the solution temperature led to larger grain size, more lamellar LPSO phases, and segregation of Zr element. The special spatial structure consisting of prismatic b' precipitates, basal g' precipitates, and lamellar LPSO phases hindered dislocation movement effectively, leading to high strength, but also caused premature cracking and decreased ductility.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Xiaojie Zhou, Wenying Xiong, Gang Zeng, Hongchao Xiao, Jian Zhang, Xianzheng Lu, Xiaomin Chen
Summary: The combined effects of LPSO orientation and alpha-Mg texture on tensile anisotropy were investigated, with the extrusion direction showing optimal mechanical properties, the 45 degrees direction exhibiting high elongation, and the transverse direction having inferior strength and elongation simultaneously. LPSO orientation contributes to strength anisotropy through different load-bearing strengthening effects along different tensile axes, while alpha-Mg texture contributes to strength anisotropy through stronger grain boundary strengthening effects. However, LPSO orientation, rather than alpha-Mg texture, accounts for ductility anisotropy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Mozhgan Shokri, Abbas Zarei-Hanzaki, Hamid Reza Abedi, Jae Hyung Cho
Summary: The study investigated the correlation between microstructure/texture evolutions and high temperature flow behavior in Mg alloy containing long period stacking order (LPSO) phases. The annealing treatment effectively strengthened the alloy and decreased ductility, with blocky LPSO assisting dynamic recrystallization and lamellar LPSO increasing alloy strength. The findings suggest that microstructure and texture evolution play a significant role in the high-temperature behavior of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Metallurgy & Metallurgical Engineering
Guoqiang Xi, Xuhan Zhao, Yanlong Ma, Yu Mou, Ju Xiong, Kai Ma, Jingfeng Wang
Summary: Rare earth elements have a significant impact on the microstructure and properties of advanced magnesium alloys. This study investigates the corrosion behavior of Mg-Zn-Y and Mg-Zn-Gd alloys with the same atomic percentage of alloying elements. The results show that the Mg-Zn-Y alloy exhibits a lower corrosion rate and higher corrosion resistance compared to the Mg-Zn-Gd alloy, attributed to its lower corrosion current density and the relative high corrosion resistance of the corrosion product layer.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jonghyun Kim, Hongxin Liao, Xiang Ou, Zhaobin Zhang, Kaikai Kang, Taekyung Lee, Fusheng Pan
Summary: This study investigates the microstructures and mechanical properties of Mg-1Gd-1Y-xZn alloys (x = 0.2, 0.4, 0.6, and 0.8). The formation of long-period stacking-ordered (LPSO) and beta phases in the as-cast alloys is observed. The volume fraction of LPSO phase increases with higher Zn content, while that of beta phase decreases. Homogenization dissolves the beta phase into the Mg matrix but has no significant effect on the volume fraction of LPSO phases. Increasing Zn content slightly reduces grain size and enhances texture. The Mg-1Gd-1Y-0.2Zn alloy shows excellent mechanical properties at room temperature due to its high density of fine LPSO phases and reinforcement capacity. Additionally, the low volume fraction of LPSO phases in this alloy suppresses yield asymmetry.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Zeru Wu, Jianmin Yu, Ziwei Zhang, Hongbing Hu, Zhimin Zhang
Summary: The static recrystallization behavior of a deformed Mg-13.14Gd-3.86Y-2.0Zn-0.39Zr alloy after different annealing treatments was investigated. The degree of recrystallization increased with higher annealing temperatures. The main mechanism for recrystallized grains formation was the transformation of low-angle grain boundaries into high-angle grain boundaries. The annealing treatment also resulted in a decrease in dislocation density and average grain size. Furthermore, the precipitation behavior of the Mg5(Gd,Y) phase changed from grain boundaries to inside the grains. The annealing treatment consumed the LPSO phases and caused a decrease in the basal texture strength of the alloy.
Article
Engineering, Mechanical
Wei Liu, Yuhong Zhao, Yuntao Zhang, Chuan Shuai, Liwen Chen, Zhiquan Huang, Hua Hou
Summary: Understanding the dynamic precipitation of LPSO phase and its effect on dynamic recrystallization in Mg-based alloys can provide insights for the manufacturing of high-performance alloys. This study found that the increase of Y and Zn atoms promotes the dynamic precipitation of 14H-LPSO phase in non-DRX and DRX grains respectively during hot extrusion.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Chemistry, Physical
Xiangsheng Xia, Echuan Yang
Summary: The microstructure and mechanical properties of Mg-Gd-Y-Zr magnesium alloys with different Zn contents were investigated. Increasing Zn content led to grain refinement and an increase in the volume fraction of the second phase. At 0.7 wt% Zn, the microstructure consisted of a-Mg matrix, Mg5(GdY), and LPSO phases. Increasing Zn content decreased the Mg5(GdY) phase and increased the LPSO phase volume fraction. At 3.3 wt% Zn, the microstructure mainly consisted of a-Mg matrix and the LPSO phase. The alloy without Zn addition exhibited optimal tensile strength and yield strength, while the alloy with 3.3 wt% Zn showed excellent elongation after fracture. Tensile fracture analysis revealed different crack origins for each alloy.
Article
Chemistry, Physical
Guoqin Wu, Zhaocan Li, Jianmin Yu, Hongbing Hu, Yali Duan, Beibei Dong, Zhimin Zhang
Summary: The texture evolution mechanism of Mg-13.1Gd-3.9Y-2Zn-0.4Zr (wt%) alloys during reciprocating upsetting extrusion and subsequent heat treatment was investigated. The influence of deformation passes on texture weakening and deformation mechanism was discussed. The results showed that the basal texture intensity decreased with increased deformation passes and significantly decreased after T6 heat treatment. The anisotropy of the alloys was maintained after T5 treatment and eliminated after T6 treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hidetoshi Somekawa, Michiaki Yamasaki, Yoshihito Kawamura, Tadanobu Inoue
Summary: By changing the insertion direction of the rolled billet, it is possible to control the area fraction of deformation kink bands, which can impact the mechanical properties of the alloy.
MATERIALS CHARACTERIZATION
(2021)
Article
Metallurgy & Metallurgical Engineering
H. T. Jeong, W. J. Kim
Summary: This study investigates the influence of intragranular lamellae-shaped long period stacking ordered (LPSO) phase on the hot compressive deformation behavior and deformation mechanisms of Mg-8.2Gd-3.8Y-1.1Zn-0.4Zr alloy. The results show that the presence of LPSO phase increases the activation energy for plastic flow (Qc) and affects the deformation behavior and high-temperature strength of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Engineering, Mechanical
Tsuyoshi Mayama, Sean R. Agnew, Koji Hagihara, Kentaro Kamura, Kazuma Shiraishi, Michiaki Yamasaki, Yoshihito Kawamura
Summary: The influence of alpha-Mg/LPSO phase interfaces on the flow stress of as-cast Mg-Zn-Y alloys was experimentally and numerically evaluated. The results showed that the flow stresses of Mg-Zn-Y alloys with LPSO phase fractions ranging from 40 to 85% were higher than those of single phase alpha-Mg or LPSO alloys. Comparison between Mg-Zn-Y alloys and Mg-Zn-Y-Zr alloys revealed that the flow stresses of Mg-Zn-Y alloys with LPSO phase fractions of 25 and 40% were insensitive to grain size, while the flow stress of alpha-Mg single-phase alloy showed clear grain size dependence. Crystal plasticity analysis successfully reproduced the observed stress-strain behavior, indicating that alpha-Mg/LPSO phase interfaces are effective obstacles against dislocation slip in two-phase Mg alloys containing LPSO phase.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Physics, Applied
Chenxi Wang, Jikai Xu, Xiaorun Zeng, Yanhong Tian, Chunqing Wang, Tadatomo Suga
JAPANESE JOURNAL OF APPLIED PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Chongyang Cai, Rong An, Chunqing Wang, Yanhong Tian, Xiaoliang Ji
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2018)
Article
Electrochemistry
Chenxi Wang, Jikai Xu, Xiaoyun Qi, Yannan Liu, Yanhong Tian, Chunqing Wang, Tadatomo Suga
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2018)
Article
Engineering, Electrical & Electronic
Siyu Sun, Qiang Guo, Hongtao Chen, Mingyu Li, Chunqing Wang
MICROELECTRONICS RELIABILITY
(2018)
Review
Chemistry, Analytical
Wei Liu, Rong An, Chunqing Wang, Zhen Zheng, Yanhong Tian, Ronglin Xu, Zhongtao Wang
Article
Materials Science, Multidisciplinary
Ying Zhong, Rong An, Huiwen Ma, Chunqing Wang
Article
Chemistry, Multidisciplinary
Chunjin Hang, He Zhang, Yanhong Tian, Chenxi Wang, Yuan Huang, Zhen Zheng, Chunqing Wang
APPLIED SCIENCES-BASEL
(2018)
Article
Engineering, Electrical & Electronic
Wei Liu, Yiping Wang, Zhen Zheng, Chunqing Wang, Rong An, Yanhong Tian, Lingchao Kong, Ronglin Xu
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Engineering, Chemical
Zhongtao Wang, Wei Liu, Yusen Wu, Wenping Sun, Wei Liu, Chunqing Wang
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Materials Science, Ceramics
Zhongtao Wang, Xijun Wang, Wei Liu, Xiaoliang Ji, Chunqing Wang
CERAMICS INTERNATIONAL
(2020)
Article
Engineering, Electrical & Electronic
Jiandong Zhu, Zhen Zheng, Chunqing Wang, Jianguo Luo
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Materials Science, Multidisciplinary
Xiaoliang Ji, Rong An, Fei Ma, Jiawei Hu, Chunqing Wang
MATERIALS & DESIGN
(2020)
Article
Materials Science, Multidisciplinary
Ying Zhong, Chunqing Wang, Jin Wang, Huiwen Ma, Sriram Krishnamoorthy, Vladislav Paley, Zijian Weng, Sungho Jin
MATERIALS RESEARCH LETTERS
(2020)
Article
Materials Science, Multidisciplinary
Longjun Guo, Wei Liu, Chunqing Wang
Summary: Cu10Sn3 intermetallic compound nanoparticles were successfully synthesized by a low-cost one-step thermal decomposition method, showing good oxidation resistance and high shear strength, making it suitable as an interconnect material for high-temperature power electronics.
Article
Engineering, Manufacturing
Wei Liu, Kai Zhu, Chunqing Wang, Zhen Zheng, Rong An, Wei Zhang, Minxi Zhu, Zhicheng Wen, Xinming Wang, Yubin Liu, Yanhong Tian
JOURNAL OF MANUFACTURING PROCESSES
(2020)