Prediction for High-Temperature Low-Cycle Fatigue Lifetime of 316L Stainless Steel Based on Immune Algorithm

Immune algorithm was proposed to predict the low cycle fatigue lifetime for 316L austenitic stainless steel at high temperatures,taking the amendatory Manson-Coffin formula,Nf(Δt)=f(εpa,Δt)as objective function.The high-temperature low-cycle fatigue experiments were performed for the 316L stainless steel at 550℃ and 600℃.The calculated results were compared with the experimental results.The results show that the immune algorithm could provide effective prediction for the low cycle fatigue creep lifetime of the steel at 550℃ and 600℃.