疲労破面残留応力モデルの適用検討

概要

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To investigate the applicability of the residual stress model used for the fatigue fracture surface of high hardened material SKH51 to the middle and low hardened materials, the residual stresses on the fatigue fracture surfaces of the quench-and-tempered SK-5 or SNCM 439 and the annealed S15C were examined. The results obtained are summarized as follows. The residual stress on the fatigue fracture surface σ_γ was found to be given by the sum of the same three components as that for the high hardened material;the tensile stress component, σ_<γ1>, the compression stress component-σ_<γ2> and the compression component-σ_<γ3>. The contribution of-σ_<γ3> . was especially large in the low stress intensity factor range, and the residual stress on the fracture surface showed various distributions due to the variations of-σ_<γ3> and -σ_<γ3>.
社団法人日本材料学会の論文
1991-01-15