EFFECTS OF DYNAMIC STRAIN AGING ON PURE BENDING FATIGUE STRENGTH OF AUSTENITIC STAINLESS STEEL
动态应变时效对奥氏体不锈钢纯弯疲劳强度的影响

DSA pre-treatment processes increase remarkably the fatigue strengthand the strenthening effects increase with increasing prestrain temperature and pre-strain. TBM observation shows that the uniform and stable dislocation networkswith high density form after DSA pre-treatment, which suppress effectively the in-ititation and propagation of fatigue crack and increase the fatigue strength.