کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
780871 | 1463784 | 2013 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effects of inclusion size and stress ratio on fatigue strength for high-strength steels with fish-eye mode failure Effects of inclusion size and stress ratio on fatigue strength for high-strength steels with fish-eye mode failure](/preview/png/780871.png)
Experimental results indicate that the fatigue life reduces by about two orders of magnitude when inclusion size doubles. Then, a model is proposed for predicting the fatigue strength of high-strength steels with fish-eye mode failure based on the experimental results for the effect of inclusion size and stress ratio. In the model, the effect of inclusion size a0 and stress ratio R on fatigue strength σa is expressed as σa ∝ a0m[(1 − R)/2]α, where m and α are material parameters. The predicted results are in good agreement with our experimental results and the ones reported in literature.
► Fatigue life reduces by about two orders of magnitude when inclusion size doubles.
► A model is proposed for predicting fatigue strength of high-strength steels.
► The model is based on experiments for the effect of inclusion size and stress ratio.
► Predicted results are in agreement with our experimental data and those in literature.
Journal: International Journal of Fatigue - Volume 48, March 2013, Pages 19–27