Microstructure and superplasticity of laser welded Ti-6Al-4V alloy

被引：11

作者：

Cheng, Donghai ^{[1
]}

Huang, Jihua ^{[1
]}

Zhao, Xingke ^{[1
]}

Zhang, Hua ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

MATERIALS & DESIGN | 2010年 / 31卷 / 01期

关键词：

BEHAVIOR; SHEET;

D O I：

10.1016/j.matdes.2009.06.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper laser beam welding (LBW) was used to join Ti-6Al-4V alloy as a pre-forming operation before superplastic deformation (SPF) process. Superplastic deformation behavior of laser welded Ti-6Al-4V alloy was investigated. The results indicated that the welded Ti-6Al-4V alloy had good superplasticity when deformed at temperature range of 870-920 degrees C and strain rate range of 10(-3)-10(-2) s(-1), and the elongation was 233-397%. The microstructure observation indicated that dynamic recrystallization happened in the weld bead. and the acicular structure of weld bead was transforming into equiaxed grains during tensile process. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：620 / 623

页数：4

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