Improving the creep-fatigue properties for 316L stainless steel by dynamic strain aging pretreatment technique
Monotonic tensile tests were conducted for 316L stainless steel under different temperatures.The dynamic strain aging (DSA) regime for this material is determined at temperatures of 400-600℃.Stress controlled creep-fatigue tests were also carried out for hot rolled and dynamic strain aging (DSA) pre-treated 316L stainless steel under different loading levels at 550℃.Comparing with hot rolled material,by DSA pre-treatment,the creep-fatigue cyclic strain amplitude is decreased and the material creep-fatigue life is effectively prolonged.Moreover,it is found that,the material creep-fatigue life monotonically increases with pre-deformation strain,no matter the maximum pre-defonnation stress is larger than the maximum creep-fatigue applied stress or not.
Creep-fatigue Dynamic strain aging pretreatment Stress control High temperature
Huifeng Jiang Xuedong Chen Zhichao Fan Jie Dong Heng Jiang
National Technology Research Center on Pressure Vessel and Pipeline Safety Engineering,Hefei General Machinery Research Institute,Hefei 230031,China
国际会议
成都
英文
245-249
2009-10-16（万方平台首次上网日期，不代表论文的发表时间）