Improved microstructures of AZ31 magnesium alloy by semi-solid extrusion

被引：22

作者：

Feng, Jingkai ^{[1
,2
]}

Zhang, Dingfei ^{[1
,2
]}

Hu, Hongjun ^{[4
]}

Zhao, Yang ^{[1
,2
]}

Chen, Xia ^{[1
,2
]}

Jiang, Bin ^{[1
,2
]}

Pan, Fusheng ^{[2
,3
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[3] Chongqing Acad Sci & Technol, Chongqing 401123, Peoples R China

[4] Chongqing Univ Technol, Coll Mat Sci & Engn, Chongqing 400050, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2021年 / 800卷 / 800期

基金：

中国国家自然科学基金;

关键词：

Semi-solid extrusion; Magnesium alloys; Mechanical properties; Microstructure; Texture; MECHANICAL-PROPERTIES; UPSETTING-EXTRUSION; PLASTIC-DEFORMATION; TEXTURE EVOLUTION; BEHAVIOR;

D O I：

10.1016/j.msea.2020.140204

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure evolution and mechanical properties of AZ31 magnesium alloy during semi-solid extrusion (SSE) has been studied and compared with traditional extrusion (TE). The results show that non-equilibrium crystallization and plastic deformation occur simultaneously in the semi-solid extrusion process. Throughout the SSE process, the nucleation rate of new fine grains is significantly higher than that of the TE, which is the result of combined nucleation of crystallization and dynamic recrystallization. Twinning can be hardly activated during the SSE process, because the restraint between deformed grains is largely reduced due to the good fluidity of the semi-solid Mg alloy. The Mg alloys extruded by the SSE is characterized for homogeneous microstructure with fine grain size, weakened texture and improved mechanical properties.

引用

页数：9

共 32 条

[1] Microstructure and texture development during hydrostatic extrusion of magnesium alloy AZ31
Bohlen, J
Yi, SB
Swiostek, J
Letzig, D
Brokmeier, HG
Kainer, KU
[J]. SCRIPTA MATERIALIA, 2005, 53 (02) : 259 - 264
[2] Microstructure and mechanical properties in an AZ31 magnesium alloy sheet fabricated by asymmetric hot extrusion
Chang, L. L.
Wang, Y. N.
Zhao, X.
Huang, J. C.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 496 (1-2): : 512 - 516
[3] Correlation of plastic deformation and dynamic recrystallization in magnesium alloy Zk60
Galiyev, A
Kaibyshev, R
Gottstein, G
[J]. ACTA MATERIALIA, 2001, 49 (07) : 1199 - 1207
[4] Characterisation of the rheological behaviour in the semi-solid state of grain-refined AZ91 magnesium alloys
Gebelin, JC
Suery, M
Favier, D
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 272 (01): : 134 - 144
[5] Fabrication of AZ31 alloy wire by continuous semisolid extrusion process
Guan Ren-guo
Zhao Zhan-yong
Sun Xiao-ping
Huang Hong-qian
Dai Chun-guang
Zhang Qiu-sheng
[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 20 : S729 - S733
[6] Grain refining and mechanical properties of AZ31 alloy processed by accumulated extrusion bonding
Han, Tingzhuang
Huang, Guangsheng
Deng, Qianyuan
Wang, Guangang
Jiang, Bin
Tang, Aitao
Zhu, Yuntian
Pan, Fusheng
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 745 : 599 - 608
[7] Jin Z.N.D.L.T., 2002, MICROSTRUCTURE SICW, P110
[8] Textures and mechanical properties of extruded Al-Cu alloys in the semisolid state
Lee, B. S.
Joo, D. H.
Kim, M. H.
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2008, 198 (1-3) : 366 - 371
[9] The indirect ultrasonic vibration process for rheo-squeeze casting of A356 aluminum alloy
Lu, Shulin
Wu, Shusen
Dai, Wei
Lin, Chong
An, Ping
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2012, 212 (06) : 1281 - 1287
[10] Microstructural and mechanical properties of magnesium alloy processed by severe plastic deformation (SPD) - A review
Mansoor, P.
Dasharath, S. M.
[J]. MATERIALS TODAY-PROCEEDINGS, 2020, 20 : 145 - 154

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