Influence of Initial Microstructure on the Strengthening Effect of Extruded Mg-8Sn-4Zn-2Al Alloys

被引：20
作者：
Bai, Yang [1 ]
Cheng, Wei-Li [1 ,2 ,3 ]
Ma, Shi-Chao [1 ]
Zhang, Jun [1 ]
Guo, Chen [1 ]
Zhang, Yao [1 ]
机构：
[1] Taiyuan Univ Technol, Sch Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Shanxi Key Lab Adv Magnesium Based Mat, Taiyuan 030024, Shanxi, Peoples R China
[3] Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China
来源：
ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2018年 / 31卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Mg-Sn alloy; Extrusion; Microstructure; Tensile property; Strengthening mechanism; MG-SN ALLOYS; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; TENSILE PROPERTIES; EXTRUSION; BEHAVIOR; ZN; TEMPERATURE; EVOLUTION; PHASE;
D O I：
10.1007/s40195-017-0673-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The Mg-8Sn-4Zn-2Al (TZA842, in wt%) alloys with different initial microstructure (as-cast-AC and homogenization treatment-HT) subjected to hot extrusion. Also, the strengthening responses to AC and HT for the extruded TZA842 alloys were reported. The results revealed that the alloy subjected to HT shows finer grain size, more homogenous microstructure and weaker basal texture than those of counterpart subjected to AC. In addition, compared with TZA842-AC alloy, precipitates were finer and uniformly dispersed in TZA842-HT owing to the utilization of HT. Moreover, the TZA842-HT alloy showed higher yield strength of 200 MPa, ultimate tensile strength of 290 MPa and elongation (EL) of 17.9% than those of TZA842-AC, which was mainly attributed to the combined effects of grain boundary strengthening, precipitation strengthening, solid solution strengthening and weak texture. Strengthening mechanism for both alloys was discussed in detail.
引用
收藏
页码：487 / 495
页数：9
相关论文
共 26 条
[1]   Improvement of aging kinetics and precipitate size refinement in Mg-Sn alloys by hafnium additions [J].
Behdad, S. ;
Zhou, L. ;
Henderson, H. B. ;
Manuel, M. V. ;
Sohn, Y. ;
Agarwal, A. ;
Boesl, B. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 651 :854-858
[2]   Preparation of ternary Mg-Li-Sn alloys from molten salt by electrolysis [J].
Cao, Peng ;
Zhang, Milin ;
Han, Wei ;
Yan, Yongde ;
Chen, Lijun .
ACTA METALLURGICA SINICA-ENGLISH LETTERS, 2012, 25 (04) :265-271
[3]   Effect of grain size distribution and texture on the cold extrusion behavior and mechanical properties of AZ31 Mg alloy [J].
Chao, H. Y. ;
Yang, Y. ;
Wang, X. ;
Wang, E. D. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (09) :3428-3434
[4]   Microstructure and mechanical properties of binary Mg-Sn alloys subjected to indirect extrusion [J].
Cheng, W. L. ;
Park, S. S. ;
You, B. S. ;
Koo, B. H. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (18-19) :4650-4653
[5]   Strengthening mechanisms of indirect-extruded Mg-Sn based alloys at room temperature [J].
Cheng, Wei Li ;
Tian, Quan Wei ;
Yu, Hui ;
Zhang, Hua ;
You, Bong Sun .
JOURNAL OF MAGNESIUM AND ALLOYS, 2014, 2 (04) :299-304
[6]   Strengthening Effect of Extruded Mg-8Sn-2Zn-2Al Alloy: Influence of Micro and Nano-Size Mg2Sn Precipitates [J].
Cheng, Weili ;
Bai, Yang ;
Wang, Lifei ;
Wang, Hongxia ;
Bian, Liping ;
Yu, Hui .
MATERIALS, 2017, 10 (07)
[7]   Improved tensile properties of an equal channel angular pressed (ECAPed) Mg-8Sn-6Zn-2A1 alloy by prior aging treatment [J].
Cheng, Weili ;
Tian, Liang ;
Wang, Hongxia ;
Bian, Liping ;
Yu, Hui .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 687 :148-154
[8]   Microstructural Characterizations and Mechanical Properties of Mg-8Sn-1Al-1Zn-xCu Alloys [J].
Cheng Weili ;
Wang Miao ;
Que Zhongping ;
Wang Hongxia ;
Zhang Jinshan ;
Xu Chunxiang ;
You Bongsun ;
Yim Changdong .
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2014, 29 (04) :803-807
[9]   Influence of Ce addition and homogenization temperature on microstructural evolution and mechanical properties of extruded Mg-Sn-Al-Zn alloy [J].
Kim, Sang-Hoon ;
Park, Sung Hyuk .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 676 :232-240
[10]   Effect of ultra-slow extrusion speed on the microstructure and mechanical properties of Mg-4Zn-0.5Ca alloy [J].
Li, Wei-jian ;
Deng, Kun-kun ;
Zhang, Xiao ;
Nie, Kai-bo ;
Xu, Fang-jun .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 677 :367-375
123