The effect of vacuum thermal cycling on LF6 aluminium alloy welded joints

被引：3

作者：

Niu, JT ^{[1
]}

Guo, W ^{[1
]}

Guo, YL ^{[1
]}

Meng, QC ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding Prod Technol, Harbin 150006, Peoples R China

来源：

ADVANCES IN FRACTURE AND STRENGTH, PTS 1- 4 | 2005年 / 297-300卷

关键词：

LF6 aluminum alloy; welded joint; thermal cycling; tensile properties;

D O I：

10.4028/www.scientific.net/KEM.297-300.2843

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The investigation aimed at the invalidation mechanism analysis and reliability evaluation of aluminum alloy welded joint under space environment will provide spaceflight designing epartments and manufactures with important technology gist and data so as to greatly reduce paceflights manufactured cost and improve spaceflight working reliability. In this paper, the tensile properties and microstructures of LF6 aluminum alloy welded joint under vacuum thermal cycling have been studied by means of vacuum thermal cycling system. The influence of vacuum thermal cycling on the tensile properties of the welded joint has investigated. Results show that the strength and the enlongation reach their maximum values at about 75 times cycling. The changes of the tensile properties are regarded as resulted from the changes of grain and the motion of dislocation.

引用

页码：2843 / 2846

页数：4