Microstructure and mechanical properties of Mg-Al-Zn alloy sheet fabricated by cold extrusion

被引：20

作者：

Liang, S. J. ^{[1
]}

Liu, Z. Y. ^{[1
]}

Wang, E. D. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 24期

关键词：

texture; magnesium alloy; extrusion; mechanical properties;

D O I：

10.1016/j.matlet.2008.05.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cold extrusion of AZ31 magnesium alloy sheets was studied in this paper. Microstructure and texture distributions of the as-extruded sheet were investigated by electron backscattered diffraction (EBSD) method. The grains were significantly refined and the average grain size was 1.6 mu m. Dynamic recrystallization has taken place during the extrusion process, which resulted in the high frequency of high angle grain boundaries in the sheet. After the cold extrusion, a weak double-peak type basal texture was formed. The formation of the texture was ascribed to the non-basal < c + a > slips. Tensile tests revealed that mechanical properties were enhanced due to grain size refinement, but mechanical anisotropy was obvious. It is believed that mechanical anisotropy was related to the splitting of basal texture. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：4009 / 4011

页数：3

共 18 条

[1] Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y [J].

Agnew, SR ;

Yoo, MH ;

Tomé, CN .

ACTA MATERIALIA, 2001, 49 (20) :4277-4289

[2] Deformation microstructures and textures of some cold rolled Mg alloys [J].

Barnett, MR ;

Nave, MD ;

Bettles, CJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 386 (1-2) :205-211

[3] Orientation effects on acoustic emission during tensile deformation of hot rolled magnesium alloy AZ31 [J].

Bohlen, J ;

Chmelík, F ;

Dobron, P ;

Kaiser, F ;

Letzig, D ;

Lukác, P ;

Kainer, KU .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 378 (1-2) :207-213

[4] 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

[5] Forging characteristics of AZ31 Mg alloy [J].

Chino, Y ;

Mabuchi, M ;

Shimojima, K ;

Yamada, Y ;

Wen, C ;

Miwa, K ;

Nakamura, M ;

Asahina, T ;

Higashi, K ;

Aizawa, T .

MATERIALS TRANSACTIONS, 2001, 42 (03) :414-417

[6] Enhanced formability at elevated temperature of a cross-rolled magnesium alloy sheet [J].

Chino, Yasumasa ;

Sassa, Kensuke ;

Kamiya, Akira ;

Mabuchi, Mamoru .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 441 (1-2) :349-356

[7] Influence of texture and grain size on work hardening and ductility in magnesium-based alloys processed by ECAP and rolling [J].

del Valle, J. A. ;

Carreno, F. ;

Ruano, O. A. .

ACTA MATERIALIA, 2006, 54 (16) :4247-4259

[8] Texture evolution during large-strain hot rolling of the Mg AZ61 alloy [J].

del Valle, JA ;

Pérez-Prado, MT ;

Ruano, OA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 355 (1-2) :68-78

[9] Comparison of the microstructure and thermal stability of an AZ31 alloy processed by ECAP and large strain hot rolling [J].

Eddahbi, M ;

del Valle, JA ;

Pérez-Prado, MT ;

Ruano, OA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 410 :308-311

[10] Correlation of microstructural evolution and formation of basal texture in a coarse grained Mg-Al alloy during hot rolling [J].

Jin, Qinglin ;

Shim, Sung-Yong ;

Lim, Su-Gun .

SCRIPTA MATERIALIA, 2006, 55 (09) :843-846

← 1 2 →