TiC-TiB2陶瓷与Ti-6Al-4V钛合金的熔化连接研究  

Experimental study on fusion bonding of TiC-TiB_2 ceramic to Ti-6Al-4V alloy

作　　者：马涛 马俊鹏 曲伟良 付久长 

机构地区：[1]63981部队,湖北武汉430311

出　　处：《粉末冶金工业》2015年第6期53-56,共4页Powder Metallurgy Industry

摘　　要：利用超重力场,在燃烧合成TiC-TiB_2细晶凝固陶瓷的同时,实现了陶瓷与钛合金的熔化连接。陶瓷-钛合金连接接头的显微组织表明,伴随着TiC-TiB_2凝固陶瓷的合成,在超高重力场燃烧合成引发的高温热真空环境下,钛合金表面发生熔化并引发液态陶瓷与液态钛合金之间强烈的原子互扩散,进而在陶瓷-钛合金连接区形成了富Ti碳化物与细小的TiB_2呈相间分布且镶嵌于钛合金上的凝固组织。同时,陶瓷-钛合金连接接头的硬度从陶瓷至钛合金一侧呈线性逐渐降低。Based on using combustion synthesis to obtain high-temperature TiC-TiB2 ceramic in ultra-high gravity field, the fusion bonding of TiC-TiB2 ceramic to Ti alloy was achieved. Microstructure of the bonding of the ceram- ic to Ti alloy illustrates that in the super thermal vacuum resulted from the combustion synthesis of TiC-TiB2 and ul- tra-high gravity field, partial fusion on the surface of Ti alloy and inter-diffusion between the ceramic and Ti alloy are the reason for the achievement of the fusion bonding with constitutional gradient, where fine TiB2 platelets are embedded in the matrix of Ti alloy alternating with Ti-enriched carbides. And a linear decrease of Vickers hardness from the ceramic to Ti alloy in the bonding area is found.

关 键 词：陶瓷-金属连接 燃烧合成 超重力场 熔化扩散 

分 类 号：TG496[金属学及工艺—焊接]