Microstructure and mechanical properties of Mg-4Al-4Nd-0.5Zn-0.3Mn alloy

被引：18

作者：

Zheng, Xingwei ^{[1
,2
]}

Wang, Lidong ^{[1
]}

Wang, Jianli ^{[1
]}

Wu, Yaoming ^{[1
]}

Ning, Zhiliang ^{[2
]}

Sun, Jianfei ^{[1
]}

Wang, Limin ^{[1
]}

机构：

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

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

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 515卷 / 1-2期

关键词：

Mg-4Al-4Nd-0.5Zn-0.3Mn alloy; Microstructure; Aging behavior; Mechanical properties; MAGNESIUM ALLOY; RARE-EARTH; BEHAVIOR; CREEP;

D O I：

10.1016/j.msea.2009.03.027

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mg-4Al-4Nd-0.5Zn-0.3Mn alloy was prepared by metal mould casting method. Microstructure, aging behavior, mechanical properties and fracture morphology of the alloy were investigated. The results showed that alpha-Mg, Al-11 Nd-3, Al2Nd and Mg-32(Al,Zn)(49) phases were the main phases of the as-cast alloy. And the long rod-like Al-11 Nd-3 phase was decomposed to granular Al2Nd through T6 heat treatment. The tensile strength was also enhanced by T6 treatment. The yield strength was increased by 17% and 21% at RT and 150 degrees C, respectively. It was mainly because that the precipitates were refined through T6 treatment and this became more benefit to hinder dislocations slipping. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：98 / 101

页数：4

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