摘要
采用热疲劳龟裂网纹模拟法，定性地研究了无钴Ｔｉ（Ｃ，Ｎ）基金属陶瓷与３Ｃｒ２Ｗ８Ｖ钢的热疲劳行为差异。结果表明，在相同周次的热循环下，前者热疲劳裂纹呈粗大交叉的直线，起源于试样棱边的尖角处，并以较快的速度进入失稳扩展；后者形成细小典型的龟裂网纹，扩展缓慢，显示出热疲劳抗力高于前者。
The thermal fatigue behavior of Ti(C,N)based cermets and 3Cr2W8V steel has been qualitatively studied and compared by simulant means of cracking net for alike cyclic numberThe results show that thermal fatigue cracks of Ti(C,N)based cermet without cobalt originate from the edges of a specimen surfaceThose cracks are straight and fast expandingThe thermal fatigue cracks of 3Cr2W8V steel are thin cracking net that is slow expand
出处
《材料工程》
EI
CAS
CSCD
北大核心
1998年第4期45-48,共4页
Journal of Materials Engineering
基金
国家自然科学基金
