Preparation and Characterization of as-cast and hot-rolled Mg-5Al-0.3Mn-1Ce alloy

被引：1

作者：

Wang, Jianli ^{[1
]}

Li, Jianping ^{[1
]}

Wang, Limin ^{[2
]}

Wang, Lidong ^{[2
]}

机构：

[1] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710032, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Utilizat, Changchun 130022, Peoples R China

来源：

MATERIALS AND DESIGN, PTS 1-3 | 2011年 / 284-286卷

关键词：

Mg-5Al-0.3Mn-1Ce alloy; Hot rolling; Microstructure; Mechanical properties; MECHANICAL-PROPERTIES; MAGNESIUM ALLOYS; RARE-EARTH; AZ31; MICROSTRUCTURE; SHEETS; CREEP;

D O I：

10.4028/www.scientific.net/AMR.284-286.1559

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mg-5Al-0.3Mn-1Ce alloy was prepared by metal mould casting method. The as-cast ingot was homogenized and hot-rolled with total thickness reduction of 61% after four passes. Texture, microstructure and mechanical properties of the studied alloy were investigated. Results showed that the as-cast sample was mainly composed of alpha-Mg, Mg17Al12 and Al11Ce3 phases. Average grain size of the as-cast sample was about 500 pm. After hot-rolling, average grain size was greatly refined to about 20 pm. Further more, the long acicular Al11Ce3 phase was smashed to small pieces. Tensile test results demonstrated that ultimate tensile strength and yield strength of the hot-rolled sample were improved by 65.2% and 165% respectively compared with those of the as-cast sample. Strength enhancement was attributed to grain refining strengthening and dislocation strengthening mechanisms.

引用

页码：1559 / +

页数：2

共 15 条

[1] PLASTIC DEFORMATION OF POLYCRYSTALLINE AGGREGATES [J].

ARMSTRONG, R ;

DOUTHWAITE, RM ;

CODD, I ;

PETCH, NJ .

PHILOSOPHICAL MAGAZINE, 1962, 7 (73) :45-&

[2] Microstructure and tensile creep behavior of Mg-4Al based magnesium alloys with alkaline-earth elements Sr and Ca additions [J].

Bai, J ;

Sun, YS ;

Xun, S ;

Xue, F ;

Zhu, TB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2) :181-188

[3] Grain refinement of AZ31 and ZK60 Mg alloys - towards superplasticity studies [J].

Bussiba, A ;

Ben Artzy, A ;

Shtechman, A ;

Ifergan, S ;

Kupiec, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 302 (01) :56-62

[4]

Callister WD, 2002, FUNDAMENTALS MAT SCI

[5] 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

[6] Mechanical anisotropy due to twinning in an extruded AZ31 Mg alloy [J].

Chino, Yasumasa ;

Kimura, Katsuya ;

Hakamada, Masataka ;

Mabuchi, Mamoru .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 485 (1-2) :311-317

[7] Enhanced stretch formability of Mg-Al-Zn alloy sheets rolled at high temperature (723 K) [J].

Chino, Yasumasa ;

Mabuchi, Mamoru .

SCRIPTA MATERIALIA, 2009, 60 (06) :447-450

[8] Microstructural and mechanical properties evolution of magnesium AZ61 alloy processed through a combination of extrusion and thermomechanical processes [J].

El-Morsy, A. ;

Ismail, A. ;

Waly, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2) :528-533

[9] Effects of yttrium on recrystallization and grain growth of Mg-4.9Zn-0.7Zr alloy [J].

Fang Xiya ;

Yi Danqing ;

Luo Wenhai ;

Wang Bin ;

Zhang Xiaojuan ;

Zheng Feng .

JOURNAL OF RARE EARTHS, 2008, 26 (03) :392-397

[10] Texture and microstructure changes in asymmetrically hot rolled AZ31 magnesium alloy sheets [J].

Kim, SH ;

You, BS ;

Yim, CD ;

Seo, YM .

MATERIALS LETTERS, 2005, 59 (29-30) :3876-3880

← 1 2 →