Microstructure evolution of AZ31 magnesium alloy during warm compression forming

被引：0

作者：

Zhang, Z. M. ^{[1
]}

Wang, Q. ^{[1
]}

Li, B. C. ^{[1
]}

Zhang, X. ^{[2
]}

机构：

[1] North Univ China, Dept Mat Sci & Engn, Taiyuan 030051, Peoples R China

[2] Engn Technol Res Ctr Integrated Precis Forming, Taiyuan 030051, Peoples R China

来源：

THERMEC 2006, PTS 1-5 | 2007年 / 539-543卷

关键词：

magnesium alloy; AZ31; warm forming; recrystallization;

D O I：

10.4028/www.scientific.net/MSF.539-543.1813

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Warm compression tests of AZ31 Mg alloy were carried out at five temperatures in 30 degrees C intervals from 210 degrees C to 330 degrees C. The samples of different thickness which were machined from as-cast and pre-strained AZ31 billets were compressed into thickness I mm and then cooled in the air to room temperature. The microstructural evolution of AZ31 Mg alloy was investigated during warm compression forming. The results show that all the samples have undergone a microstructure changes to different scales in the range investigated. The twinning is the predominant deformation mechanism for magnesium alloys at moderate temperatures and its occurrence is dependent on temperature and strain. Microstructural evaluation indicates that the mean size of the recrystallised grains decreases with increasing effective strain and temperature because of sufficient dynamic recrystallization. The original grain has significant influence on microstructural evolution during warm forming.

引用

页码：1813 / +

页数：2

共 13 条

[1] Grain refining of magnesium alloy AZ31 by rolling [J].

Chang, TC ;

Wang, JY ;

O, CM ;

Lee, S .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2003, 140 :588-591

[2]

Chino Y, 2001, ADV ENG MATER, V3, P981, DOI 10.1002/1527-2648(200112)3:12<981::AID-ADEM981>3.0.CO

[3]

2-X

[4] Correlation of plastic deformation and dynamic recrystallization in magnesium alloy Zk60 [J].

Galiyev, A ;

Kaibyshev, R ;

Gottstein, G .

ACTA MATERIALIA, 2001, 49 (07) :1199-1207

[5] Warm lateral extrusion of magnesium wrought alloy by using multi-axes material testing machine [J].

Hatsukano, K ;

Matsuzaki, K ;

Shimizu, T ;

Shinozaki, K .

MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS, 2005, 488-489 :487-490

[6] Mechanical anisotropy of extruded Mg-6% Al-1% Zn alloy [J].

Kleiner, S ;

Uggowitzer, PJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 379 (1-2) :258-263

[7] The activity of non-basal slip systems and dynamic recovery at room temperature in fine-grained AZ31B magnesium alloys [J].

Koike, J ;

Kobayashi, T ;

Mukai, T ;

Watanabe, H ;

Suzuki, M ;

Maruyama, K ;

Higashi, K .

ACTA MATERIALIA, 2003, 51 (07) :2055-2065

[8] Routes to develop fine-grained magnesium alloys and composites for high strain rate superplasticity [J].

Mukai, T ;

Watanabe, H ;

Nieh, TG ;

Higashi, K .

SUPERPLASTICITY-CURRENT STATUS AND FUTURE POTENTIAL, 2000, 601 :291-302

[9] Microstructural evolution during large strain hot rolling of an AM60 Mg alloy [J].

Pérez-Prado, MT ;

del Valle, JA ;

Contreras, JM ;

Ruano, OA .

SCRIPTA MATERIALIA, 2004, 50 (05) :661-665

[10]

RYO M, 2004, MAT T, V45, P2838

← 1 2 →