The objective of this paper is to study the gigacycle fatigue behavior of an austenitic steel at temperatures of 6001C and 700℃under fully reverse loading(R=-1).Numerical simulation by finite element method(FEM)was u...The objective of this paper is to study the gigacycle fatigue behavior of an austenitic steel at temperatures of 6001C and 700℃under fully reverse loading(R=-1).Numerical simulation by finite element method(FEM)was used to design the specimens and to analyze the effects of the variation in the dynamic Young modulus with temperature from measurements of the ultrasonic resonance frequency.Finally,new stress-life curves for this material are presented for a lifetime range from 10^(5)to 10^(9)cycles at room temperature,600℃and 700℃.展开更多
文摘The objective of this paper is to study the gigacycle fatigue behavior of an austenitic steel at temperatures of 6001C and 700℃under fully reverse loading(R=-1).Numerical simulation by finite element method(FEM)was used to design the specimens and to analyze the effects of the variation in the dynamic Young modulus with temperature from measurements of the ultrasonic resonance frequency.Finally,new stress-life curves for this material are presented for a lifetime range from 10^(5)to 10^(9)cycles at room temperature,600℃and 700℃.
