1 College of Mechanical Engineering, Chongqing University, Chongqing 400044, China 2 State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China 3 Chongqing Research Institute of China Coal Technology and Engineering Group Corp, Chongqing 400016, China
Fatigue�Ccreep interaction based on continuum damage mechanics for AISI H13 hot work tool steel at elevated temperatures
1 College of Mechanical Engineering, Chongqing University, Chongqing 400044, China 2 State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China 3 Chongqing Research Institute of China Coal Technology and Engineering Group Corp, Chongqing 400016, China
ժҪ AISI H13 (4Cr5MoSiV1) is one of the commonly used materials for extrusion tool, and it suffers from fatigue�Ccreep damage during the hot extrusion process. Stress-controlled fatigue and creep�Cfatigue interaction tests were carried out at 500 ��C to investigate its damage evolution. The accumulated plastic strain was selected to define the damage variable due to its clear physical meaning. A new fatigue�Ccreep interaction damage model was proposed on the basis of continuum damage mechanics. A new equivalent impulse density for fatigue�Ccreep tests was proposed to incorporate the holding time effect by transforming creep impulse density into fatigue impulse density. The experimental results indicated that the damage model is able to describe the damage evolution under these working conditions.
Abstract��AISI H13 (4Cr5MoSiV1) is one of the commonly used materials for extrusion tool, and it suffers from fatigue�Ccreep damage during the hot extrusion process. Stress-controlled fatigue and creep�Cfatigue interaction tests were carried out at 500 ��C to investigate its damage evolution. The accumulated plastic strain was selected to define the damage variable due to its clear physical meaning. A new fatigue�Ccreep interaction damage model was proposed on the basis of continuum damage mechanics. A new equivalent impulse density for fatigue�Ccreep tests was proposed to incorporate the holding time effect by transforming creep impulse density into fatigue impulse density. The experimental results indicated that the damage model is able to describe the damage evolution under these working conditions.
Hai-sheng Chen Yong-qin Wang, Wei-qi Du Liang Wu Yuan-xin Luo,. Fatigue�Ccreep interaction based on continuum damage mechanics for AISI H13 hot work tool steel at elevated temperatures[J].Journal of Iron and Steel Research International, 2018, 25(5): 580-588.
Hai-sheng Chen Yong-qin Wang, Wei-qi Du Liang Wu Yuan-xin Luo,. Fatigue�Ccreep interaction based on continuum damage mechanics for AISI H13 hot work tool steel at elevated temperatures. , 2018, 25(5): 580-588.
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2018, Vol. 25 
