EFFECTS OF CYCLIC EXPANSION-EXTRUSION WITH AN ASYMMETRICAL EXTRUSION CAVITY (CEE-AEC) ON THE MICROSTRUCTURE AND TEXTURE EVOLUTION OF Mg-13Gd-4Y-2Zn-0.5Zr ALLOYS

被引:0
作者
Fan, Hongzhi [1 ]
Yan, Zhaoming [1 ]
Zhang, Zhimin [1 ]
Wang, Qiang [1 ]
Xu, Jian [1 ]
Xue, Yong [1 ]
机构
[1] North Univ China, Sch Mat Sci & Engn, 3 Xueyuan Rd, Taiyuan 030051, Peoples R China
来源
MATERIALI IN TEHNOLOGIJE | 2020年 / 54卷 / 04期
关键词
Mg-Gd-Y-Zn-Zr alloy; CEE-AEC; microstructure; texture; SEVERE PLASTIC-DEFORMATION; AZ31 MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; MG ALLOY; STRENGTH; DUCTILITY; BEHAVIOR;
D O I
10.17222/mit.2019.251
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effect of the passes of cyclic expansion-extrusion with an asymmetrical extrusion cavity (CEE-AEC) on the microstructure and texture evolution of the Mg-13Gd-4Y-2Zn-0.52r (w/%) alloy was investigated in this research. The alloy was subjected to (1. 2. 3 and 4) passes at (753. 733, 723 and 693) K, respectively. An optical microscope (OM), a scanning electron microscope (SEM) and electron backscattered diffraction (EBSD) were used to study the microstructure and texture evolution. The CEE-AEC process caused a significant grain refinement as the grain size decreased to 1.4 mu m from the initial value of 24 mu m after three CEE-AEC passes, while it increased slightly, to 1.6 mu m, after an additional CEE-AEC pass. With the increasing of the CEE-AEC passes, the number fraction (NF) of low-angle grain boundaries (LAGBs) tended to decrease, and the average misorientation increased due to the enhancement of recrystallization. The basal texture was weakened after four CEE-AEC passes, and the shear strain led to a rotation by 45 degrees. The maximum intensity was reduced from 11.692 to 1.944.
引用
收藏
页码:495 / 501
页数:7
相关论文
共 39 条
[21]   Effects of ECAP Extrusion on the Microstructure, Mechanical Properties and Biodegradability of Mg-2Zn-xGd-0.5Zr Alloys [J].
Chen, Jun-Xiu ;
Zhu, Xiang-Ying ;
Tan, Li-Li ;
Yang, Ke ;
Su, Xu-Ping .
ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2021, 34 (02) :205-216
[22]   Evolution of microstructure, texture, and mechanical performance of Mg-13Gd-2Er-0.3Zr alloy by double extrusion at different temperatures [J].
Khan, Muhammad Abubaker ;
Afifi, Mohamed A. ;
Hafeez, Muhammad Arslan ;
Chaudry, Umer Masood ;
Brechtl, Jamieson ;
Zulfiqar, Maryam ;
Tariq, Hafiz Muhammad Rehan ;
Hussain, Muhammad Asif ;
Kamran, Muhammad ;
Ishtiaq, Muhammad ;
Manzoor, Muhammad Umar ;
Mansoor, Adil ;
Jabar, Bushra .
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, 2024, 25 (01)
[23]   Effects of Microstructure and Texture Evolution on Strength Improvement of an Extruded Mg-10Gd-2Y-0.5Zn-0.3Zr Alloy [J].
Xue, Zhiyong ;
Han, Xiuzhu ;
Zhou, Zhiyong ;
Wang, Yanlin ;
Li, Xuesong ;
Wu, Jiapeng .
METALS, 2018, 8 (12)
[24]   Deformation behavior of Mg-13Gd-4Y-2Zn-0.5Zr alloy on the basis of LPSO kinking, dynamic recrystallization and twinning during compression-torsion [J].
Xu, Wenlong ;
Yu, Jianmin ;
Jia, Leichen ;
Wu, Guoqin ;
Zhang, Zhimin .
MATERIALS CHARACTERIZATION, 2021, 178
[25]   Revealing the microstructure, texture evolution and mechanical properties along the whole wall of Mg-Gd-Y-Zn-Zr cylinders by tailoring rotary backward extrusion parameters [J].
Zheng, Jie ;
Zhou, Tao ;
Zhang, Zhimin ;
Yan, Zhaoming ;
Ren, Xianwei ;
Xue, Yong .
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2024, 30 :8067-8079
[26]   Microstructure Evolution and Dynamic Precipitation Behavior of Mg-10Gd-4Y-1Sm-0.5Zr Alloy During Backward Hot Extrusion [J].
Yan, L. P. ;
Li, Q. A. ;
Chen, X. Y. .
METALS AND MATERIALS INTERNATIONAL, 2021, 27 (09) :3522-3528
[27]   Influence of a novel SPD technique together with heat treatment on the microstructural characteristics and hardness of Mg-13Gd-4Y-2Zn-0.5Zr alloys [J].
Xue, Xiongwen ;
Wang, Qiang ;
Song, Xiaoqian ;
Yan, Zhaoming ;
Zheng, Jie ;
Gao, Chang ;
Yin, Caihong ;
Xue, Yong .
MATERIALS RESEARCH EXPRESS, 2020, 7 (12)
[28]   Effects of homogenization treatment on microstructure and elongation of the Mg-13Gd-4Y-2Zn-0.6Zr alloy [J].
Shi Wenjia ;
Zhang Zhimin ;
Meng Mu ;
Yang Yongbiao .
MATERIALS RESEARCH EXPRESS, 2018, 5 (01)
[29]   Microstructure evolution and microhardness of Mg-13Gd-4Y-2Zn-0.5Zr alloy via pre-solution and multi-directional forging (MDF) process [J].
Dong, Beibei ;
Che, Xin ;
Zhang, Zhimin ;
Yu, Jianmin ;
Meng, Mu .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 853
[30]   The evolution of microstructure and its effect on high-cycle fatigue behavior in Mg-9Gd-4Y-2Zn-0.7Zr alloy processed by repetitive upsetting-extrusion [J].
Li, Zhaocan ;
Zhen, Minghui ;
Ding, Jing ;
Tian, Jili .
JOURNAL OF ALLOYS AND COMPOUNDS, 2025, 1019