摘要
用远场循环压缩方法在淬火硬质合金试件缺口端部引发了自行中止的I型疲劳裂纹,在三点弯曲循环载荷下该疲劳裂纹继续扩展,对裂纹扩展的各阶段(包括最后瞬断)的断口作了比较和解释.
An auto-arrested mode I fatigue crack initiated from the notch tip of as-queuched testpiece of the cemented carbide by the far-field cylic compression method has been investigated.The carck can renew its propagation if the loading method is changed from cyclic compression to three-point cyclic bending.The fracture surface at different stages, including the static fracture at last, have been compared and explained.
出处
《上海工程技术大学学报》
CAS
1995年第2期1-6,共6页
Journal of Shanghai University of Engineering Science
基金
本工作得到上海工程技术大学校科学基金资助
部分实验工作得到"上海高教材料微观结构与性能重点开放实验室"的资助
关键词
硬质合金
疲劳
裂纹扩展
断口
Cemented carbide Fatigue Crack propagation Fracture surface
