前言在航空工业30CrMnSiA钢仍被广泛地应用于重要焊接结构件,它不仅具有良好的综合机械性能,而且还有较好的可焊性。焊接势必造成焊接件中局部金属过热,这是由焊接工艺的冶金过程所决定的,而金属的性能取决于组织,这是金属学上的基本规律。因此,焊接件中焊缝区和热影响区的组织变化,必将影响金属性能的改变。魏氏组织常在焊缝中遇见,例如,在低,中碳钢的焊接件中存在着明显的魏氏组织,这是众所皆知,但是,像30CrMnSiA一类的合金钢,在焊接时是否同样产生魏氏组织呢?这是本文探讨的内容之一。 Foreword In the aviation industry 30CrMnSiA steel is still widely used in important welded structural parts, it not only has good overall mechanical properties, but also better solderability. Welding is bound to cause the local welding metal parts overheating, which is determined by the metallurgical process of the welding process, and the performance of the metal depends on the organization, which is the basic law of metallurgy. Therefore, the welded part of the weld zone and heat affected zone changes in the organization, will certainly affect the metal properties change. It is well-known that Widman’s tissue is found in weld seams, for example, in the welds of low and medium carbon steels, but alloy steels such as 30CrMnSiA, when welded Does it also produce Wei’s organization? This is one of the contents discussed in this article.