부분 열처리한 기계 구조용 탄소강의 피로균열 전파에 관한 연구

A Study on the Fatigue Crack Propagation of Partly Heat Treated Medium Carbon Steel

It is well known that mechanisms of fracture and fatigue crack propagation depend upon various characteristics such as environmental condition. crack geometry. heat treatment and mechanical properties. It seems to be important for the detailed evaluation of structural integrity to investigate the effects of the above factors on the behavior of structural components which contain flaws. In this paper. it is studied that the fatigue crack propagation of partly heat treated medium carbon steel (SM45C) by high frequency heat treatment.