摘要
研究了热疲劳裂纹产生与扩展的力学基础。指出热疲劳循环实质为塑性压应变与弹性拉应变的循环。在热应力σ_(oo)、σ_(zz)作用下热疲劳裂纹产生、扩展并衍生,从而构成了典型的热疲劳裂纹形貌.即网络状裂纹。
In this paper,the mechnical fundament for the cracks was studied through the thermal fatigue experiment. It is pointed out that the circles of thermal fatigue are ones of plastic compressive strain and elastic tensile strain. By the thermal stress σ_(?)、σ_(ZZ) cracks in the thermal fatigue are initiative,growing,and propagative. Therefore,it is constituted to a typical morphology of cracks in the thermal fatigue which is named with network cracks.
出处
《机械工程材料》
CAS
CSCD
1993年第6期29-30,50,共3页
Materials For Mechanical Engineering
