Microstructure and Hardness Effects on Behavior of Copper Alloy under Creep – Fatigue Interaction

Abstract

The microstructure and hardness of copper alloy after fatigue-creep interactiontesting have been investigated. Experiments were carried out in the temperaturerange from room temperature to 300oC. Attention has been paid to the role of themicrostructure and hardness on the fatigue-creep strength of copper alloy. It hasbeen shown that, there is a little effect of microstructure in the cyclic response ofcopper alloy, while the hardness has a significant effect on the fatigue-creepstrength. The relation between strength and hardness were described by thefollowing equation:σE.L. = 5.345 H0.6217