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一、前言15CrMoV 钢是用于焊接结构的,它与其他高强钢一样,为了保证其性能,热处理方式有两种:其一为先焊接后热处理;其二为先热处理后焊接。前者不仅要克服焊接构件的变形与氧化,而且热处理后还需一个清理工序,这对焊接结构件的生产带来很大困难,而后者则难以保证焊接接头的韧性。这是一个尚未彻底解决的矛盾。如果采用先热处理后焊接的方式,而从焊接冶金(包括液相冶金与固相冶金)自身的特点着手,对具体的母
I. Introduction 15CrMoV steel is used for welding structure, it is the same with other high-strength steel, in order to ensure its performance, there are two kinds of heat treatment: one after the first heat treatment after welding; the other is the first heat treatment after welding. The former not only to overcome the deformation and oxidation of welding components, but also need a heat treatment after the cleaning process, which brings great difficulties in the production of welded structures, while the latter is difficult to ensure the toughness of welded joints. This is a contradiction that has not yet been completely resolved. If the first way after the heat treatment of welding, and from the welding metallurgy (including liquid metallurgy and solid-phase metallurgy) own characteristics to proceed with the specific mother