一、前言 铝镁合金是航空工业中常用的一种铝合金,在铝镁合金的焊接构件生产中,常常会在焊缝金属中产生气孔缺陷。虽然,历来对铝合金焊接中的气孔问题研究颇多,但是由于铝合金焊缝气孔的影响因素甚多,焊接生产中仍然屡屡出现此类缺陷。因此,铝合金焊缝气孔问题总是焊接工作者密切关心的问题。本文通过大量的试验工作,研究了采用钨极氩弧焊时材料 I. Introduction Aluminum-magnesium alloy is commonly used in aviation industry, an aluminum alloy, aluminum-magnesium alloy welding components in the production, often in the weld metal porosity defects. Although the stomatal problem has always been a lot of research on aluminum alloy welding, but due to many factors affecting the porosity of aluminum alloy weld, welding production is still often such defects. Therefore, the aluminum alloy weld porosity problems are always closely concerned by welding workers. This article through a large number of experimental work, the study of the use of TIG welding materials