Microstructure, texture and mechanical properties of coarse-grained Mg-Gd-Y-Nd-Zr alloy processed by multidirectional forging

被引：111

作者：

Xia, Xiangsheng ^{[1
]}

Chen, Qiang ^{[1
]}

Zhao, Zude ^{[1
]}

Ma, Minglong ^{[2
]}

Li, Xinggang ^{[2
]}

Zhang, Kui ^{[2
]}

机构：

[1] Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China

[2] Beijing Gen Res Inst Nonferrous Met, State Key Lab Fabricat & Proc Nonferrous Met, Beijing 100088, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 623卷

基金：

中国国家自然科学基金;

关键词：

Mg-Gd-Y-Nd-Zr alloy; Multidirectional forging; Microstructure; Texture; Mechanical properties; AZ31 MAGNESIUM ALLOY; MG-10GD-2Y-0.5ZR ALLOY; PLASTIC-DEFORMATION; HOT COMPRESSION; EXTRUSION; EVOLUTION; REFINEMENT; BEHAVIOR; METALS; AZ80;

D O I：

10.1016/j.jallcom.2014.10.084

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multidirectional forging (MDF) was applied to severely deform the homogenized coarse-grained Mg-Gd-Y-Nd-Zr alloy under decreasing temperature condition, and the microstructure, texture and tensile properties of the MDFed alloy were investigated in the current study. With the increase of MDF passes, the volume fraction of the fine recrystallized grains was remarkably increased, and the average grain size decreased from 200 mu m to 5.4 mu m after three MDF passes, but after that, the average grain size was almost unchanged, ultrafine grains (UFGs) with an average grain size of 5.1 mu m were uniformly evolved after six MDF passes. The basal texture was gradually weakened with increasing the MDF passes, which resulted from cooperative effect of dynamic recrystallization, dynamic precipitation and the change direction of the MDF force. The yield strength, ultimate tensile strength and elongation to failure were enhanced with increasing the MDF passes. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：62 / 68

页数：7

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