High Frequency Fatigue Property of Al Alloy at High Temperature
The high frequency fatigue property of A1 alloy 2024 was studied at high temperature,and S-N curves of smooth specimens and notched specimens were obtained under different stress ratio.The results show that the fatigue limit decreases with increasing stress concentration coefficient,and the fatigue limit decreases with the stress ratio under same stress concentration coefficient.Based on double logarithmic equation,S-N curves of A1 alloy under different states were given considering the fatigue limit as threshold value.The S-N curves proposed in the research have direct reference for the design of aluminium structures.
Al alloystress concentration coefficientstress ratioS-N curvefatigue life
NETL
NSTL
万方数据
维普
