高張力鋼の腐食疲労強度について

概要

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Corrosion fatigue behaviors have been studied on low carbon steels and high tensile steels in %NaCl. The corrosion fatigue strength against the number of cycles was estimated by the following formula. σ_<ac>=σ_<a>/(1+B・f^<-p>・N_f^<p+q>) here σ_<a> is the fatigue strength tested in air, f is the cyclic speed, N_f is the fatigue life to failure, and B, p, q are the material constants. It was obtained experimentally that the material constants were given as follows : (1) For a plain specimen of SM 41B steel and a notched specimen of HT 80 steel, B=2.14×10^<-4>, p=0.39, q=0.36 under plane bending corrosion fatigue tests. (2) For a plain specimens of HT 80, HY 110, and HY 130 steels, B=4.78×10^<-4>, p=0.39, q= 0.36 under plane bending corrosion fatigue tests. (3) For a plain specimen of SM41B steel, B=1.08×10^<-4>, p=0.39, q=0.36 under tention and compression corrosion fatigue tests. (4) The material constant B is given by the following function. B=8.7×10^<-4>log σ_<ω>- 1.0×10^<-3> here σ_<ω> is the fatigue limit tested in air.
社団法人日本材料学会の論文
1979-09-15