Superplastic deformation of laser welded Ti-6Al-4V sheet

被引：7

作者：

Cheng, D. H. ^{[1
]}

Huang, J. H. ^{[1
]}

Zhang, H. ^{[1
]}

Zhao, X. K. ^{[1
]}

机构：

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

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2010年 / 26卷 / 04期

关键词：

Ti-6Al-4V alloy; Laser welding; Superplastic deformation; Lamella globularisation; ALLOYS;

D O I：

10.1179/026708309X12468927349217

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Uniaxial hot tensile tests were carried out in order to investigate the superplastic deformation of laser welded Ti-6Al-4V sheet. The results revealed that the welded specimens had good superplasticity at temperature of 870-920 degrees C and strain rate of 10(-3)-10(-2) s(-1), and the elongation was 233-397%. Dynamic globularisation was observed in the weld bead, and the acicular structure of weld bead was transforming into equiaxed grains while straining. The increasing temperature and decreasing strain rate enhanced the globularisation process.

引用

页码：457 / 460

页数：4

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