【摘 要】
：
The brazing process of cubic boron nitride (CBN) grains and AlSI 1045 steel with AgCuTi-TiC mixed powder as a filler material was carried out.The joining streng
【机 构】
：
College of Mechanical and Electrical Engineering
【基金项目】
：
the Natural Science Foundation of Jiangsu Province,China;the Ph.D.Program Foundation of Ministry of Education of China;the National Basic Research Priorities Program of China;国家自然科学基金
论文部分内容阅读
The brazing process of cubic boron nitride (CBN) grains and AlSI 1045 steel with AgCuTi-TiC mixed powder as a filler material was carried out.The joining strength and the interfacial microstructure were investigated.The experimental results indicate that the spreading of the molten filler material on AISI 1045 steel is decreased with the increase of TiC content.A good interface is formed between the TiC particulates and AgCuTi alloy through the wetting behavior.In the case of AgCuTi+ 16wt％ TiC,the strength of the brazed steel-to-steel joints reached the highest value of 95 MPa dependent upon the reinforcement effect of TiC particles within the filler layer.Brazing resultants of TiB2,TiB,and TiN are produced at the interface of the CBN grains and the AgCuTi-TiC filler layer by virtue of the interdiffusion of B,N,and Ti atoms.
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