【摘要】 介绍了低合金耐热钢焊接材料及接头性能的研究现状及2个发展趋势。阐述了焊材中合金元素(如Cr,Mo,Ti,V,Nb等)对焊缝组织和性能的影响以及新型低合金耐热钢焊接材料的研制;对焊接接头长期在高温高压下容易出现再热裂纹和蠕变裂纹这2种现象进行了分析;讨论了热处理工艺对低合金耐热钢焊接接头性能影响。更多还原

【Abstract】 Present status and developmental trend of welding material and welding joint property of heat-resistant steels in domestic and overseas are mainly introduced. The importance of alloying agent and the development of neotype welding materials are emphasized. It is pointed out that under high temperature and pressure reheat cracking and creep cracking will appear in the welding joint. This article discusses the effects of heat treatment technology on welding joint.更多还原