铁基合金的液相扩散焊接

本文介绍了用于航天工业的铁基合金－Ｉｎｃｏｌｏｙ８００液相扩散焊接技术，探讨了中间夹层的选择及母材表面合金化的手段，观察分析了焊缝组织及其机械性能。研究表明，中间夹层选择的成功与否是影响液相扩散焊接的主要因素之一。通过试验，找出了中间夹层中硼，碳，硅三种元素的最佳添加量。试验证明，采用激光喷镀法使母材表面合金化的手段是可行的，但镀层底部局部起伏不平导致焊缝形成生成相影响了焊缝的机械性能，通过各种方

Incoloy 800 transient liquid insert metal-bonding methods

In this paper,Incoloy 800 Transicnt Liquid Insert Metal-bonding Methods,widly used in space technology,hvae becn introduced,and the choosing of insert met-al and the alloying of base metal surface have been probcd.he bonded joints andtheir mechanical propertics have been analyscd.It has been proved that the choice ofinsert metal could be one of the main factors influcncing the transient liquid insert met-al bonding.The optimum amount of the clcmcnts,boron,carbon and siliocn addcd toinsert mctal has been determincd through tests.It has been proved that the using oflaser powdering as an approach to base mctal alloying is feasible. This approach canreduce the bonding labour intensity and raise working efflciency.But the mechanicalproperties of the bonded joint can be critically influenccd by the insertlaycr formed,due to the unevcn rising and falling in the bottom area of the cladding layer.It hasbeen also veriflcd that bonded joints without defect can be got by both insert metalbonding and powdcr bonding.