摘要
以奥氏体不锈钢为例,简要介绍了A-TIG试验原理以及其在不锈钢领域的应用。系统地分析了活性剂对焊缝组织、力学性能和耐腐蚀性能的影响。目前主要存在三种焊缝熔深增加机理,即"电弧收缩"理论、"阳极斑点"理论和"表面张力温度梯度改变"理论,并对这三种理论进行了系统地阐述。
Taking austenitic stainless steel as an example, it briefly introduced the A-TIG test principle in this article,and application of A-TIG wedding in stainless steel field. It systematically analyzed the influence of surfactant on weld organization,mechanical properties and corrosion resistance. At present, there are three types of weld penetration increase mechanism,namely the ＂arc contraction＂ theory, the ＂anode spots＂ theory and the ＂surface tension temperature gradient change＂ theory, it systematically expatiated the above three theories.
出处
《焊管》
2015年第7期1-5,共5页
Welded Pipe and Tube
关键词
焊接
A-TIG
奥氏体不锈钢
熔深
焊缝组织
力学性能
welding
A-TIG
austenitic stainless steel
penetration
weld organization
mechanical properties
作者简介
蔡养川（1987-），男，博士研究生，主要从事焊接材料方面的研究工作。
