焼きばめ軸の引張圧縮疲労度強度に及ぼす高周波焼き入れ効果

概要

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The present investigation has been made in order to determine the influence of induction-hardening on the fatigue strength of shrink-fitted specimens. Cyclic direct stress fatigue tests were made on shrink-fitted specimens 20 mm in diameter of NiCrMo steel. The results obtained were summarized as follows : 1. The reduction ratio 2.3 was obtained by comparing the endurance limit for a shrink-fitted specimen with that of a plain specimen. 2. The endurance limit of a shrink-fitted specimen was increased by about 2.1 times by induction-hardening. 3. The fatigue strength of the induction-hardened specimen with a shrink-fitted member may be estimated approximately from the modified Goodman diagram, in which the residual compressive stress on the surface layer of specimen is assumed to be mean stress.
社団法人日本材料学会の論文
1963-06-15