引張りおよび圧縮の初期残留応力領域での疲労き裂進展について

概要

論文の詳細を見る
The laminated inhomogeneity and the residual stress are important factors controlling the fatigue strength of the surface hardened metals. In this report, the fatigue crack propagation of the sheet specimens which have tensile or compressive uniaxial residual stress but no laminated inhomogeneity was discussed. The main results obtained are as follows ; The fatigue crack propagation rate increased in the region of tensile residual stress but decreased in the region of compressive residual stress at the condition of the stage II b of the fatigue crack propagation mechanism, where the striations are predominant on the fractured surface. It seems that the effect of the initial compressive residual stress on the fatigue crack propagation does not always follow the above result, and it is closely related to the fatigue crack propagation mechanism.
社団法人日本材料学会の論文
1980-10-15