金属加工（热加工）Issue(10)：55-60,6.
2A14铝合金高拘束应力多层多道TIG焊缝断裂行为研究
Research on fracture behavior of high-restraint-stress multi-layer and multi-pass TIG welds in 2A14 aluminum alloy
仇一卿 1陈杰 1何强 1倪涛 1倪林斌 1陆伟1
作者信息
- 1. 上海航天精密机械研究所 上海 201600
- 折叠
摘要
Abstract
TIG double-sided three-layer welding process tests were conducted on 5mm thick 2A14 aluminum alloy circular restrained welds.The weld composition was analyzed using EDS,and the weld zones were classified based on the compositional results.Fracture locations were observed,and stress simulations were performed on the welds.Residual stress testing was also carried out.Observations and tests revealed that,compared to traditional butt joints,high-restraint-stress multi-layer and multi-pass welding undergoes dual thermo-mechanical effects,with fractures occurring at the weld fusion line.Tensile test results of the welded joints showed reductions in both tensile strength and elongation;however,the fracture surfaces still exhibited characteristics of plastic fracture.关键词
2A14/高拘束/多层多道焊/热-力/熔合线Key words
2A14/high restraint/multi-layer and multi-pass welding/thermo-mechanical/fusion line引用本文复制引用
仇一卿,陈杰,何强,倪涛,倪林斌,陆伟..2A14铝合金高拘束应力多层多道TIG焊缝断裂行为研究[J].金属加工（热加工）,2025,(10):55-60,6.
