Experimental study of remaining creep life of SA-304L stainless steel using small punch creep test

摘要

In this paper, the remaining creep life of SA-304L stainless steel at elevated temperatures is studied. The small punch creep tests (SPCT) were performed on SA-304L virgin and aged materials at constant loads. Times to fracture and the minimum deflection rate in SPCTs were recorded, and the time-temperature parametric analysis was performed, based on experimental results. The constants of the Larson-Miller parameter and the Monkman-Grant relationship were obtained for different consumed creep life ratios, and eventually the equations were established to explain the variation of constants of the Larson-Miller parameter and the Monkman-Grant relationship with respect to the consumed creep life ratio.