热处理对Al-4.3Cu-0.8Mg合金组织与性能的影响

In this paper, the Al-4.3Cu-0.8Mg alloy was heat treated by different temperature and time. We observe the microstructure, detect the mechanical properties, analyze the fractography and study Al-Cu-Mg alloys to improve it\\\\\\\\\\\\\\\'s hardness and impact toughness. Finally, we have a result that solution treatment and aging treatment can refine the microstructure of the alloy and improve the hardness and toughness; when the solution temperature is 525℃, the solution time is 8h, the aging temperature is 190 ℃, the aging time is 10h, the hardness of the Al-4.3Cu-0.8Mg alloy is the highest; when the solution temperature is 505℃, the solution time is 6h, the aging temperature is 180 ℃, the aging time is 8h, the impact toughness of the alloy is the best.