Effect of joint design on mechanical properties of AL7075 weldment

被引：10
|
作者：
Li, LJ [1 ]
Orme, K [1 ]
Yu, WB [1 ]
机构：
[1] Utah State Univ, Dept Mech & Aerosp Engn, Logan, UT 84322 USA
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2005年 / 14卷 / 03期
关键词：
AL7075; automated gas-tungsten arc welding; joint design; mechanical properties;
D O I：
10.1361/10599490523940
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of joint design on the mechanical properties of AL7075-T6 aluminum sheet were studied on the latest automated gas-tungsten arc-welding system. Using ER5356 filler metal, full-penetration welds were made on workpieces with various included joint angles. Testing of the mechanical properties of the joints was done in the as-welded, naturally aged, and postweld heat-treated conditions. The results show that by using crack-resistant filler, and by selecting the proper joint design and postweld heat treatment, strong, dependable welds can be produced on thin AL7075 sheet material. An elasticity model of the weld joint was established to help understand the mechanical behavior of the joints. An undermatched joint design is shown to be capable of achieving a joint strength that matches the strength of the base alloy.
引用
收藏
页码：322 / 326
页数：5
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