升温速率对Al-4.76Zn-2.13Mg-1.18Cu合金力学性能的影响  

Effect of Heating Rate on Mechanical Properties of Al-4.76Zn-2.13Mg-1.18Cu Alloy

作　　者：赵子君 石峰[1] 王帅 刘松[1] 赵彦林 王旭[1] 王茂廷[1] ZHAO Zijun;SHI Feng;WANG Shuai;LIU Song;ZHAO Yanlin;WANG Xu;WANG Maoting(School of Mechanical Engineering,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学机械工程学院

出　　处：《热加工工艺》2018年第22期206-208,213,共4页Hot Working Technology

摘　　要：研究了Al-Zn-Mg-Cu合金在升温时效过程中的力学性能变化以及合金内部析出相的转变规律。试验结果表明,升温时效可明显提高Al-4.76Zn-2.13Mg-1.18Cu合金的强度,在升温时效(180℃,40℃/h)条件下,只需要2 h的时效时间就可使合金达到峰时效的力学性能。随时效升温速率的降低与升温终止温度的升高,合金内部析出相尺寸增大。The mechanical properties of Al-Zn-Mg-Cu alloy and the transformation of precipitated phases in the alloy during heating aging were studied. The experimental results show that, the strength of Al-4.76Zn-2.13Mg-1.18Cu alloy can be improved by heating aging. Under the condition of heating aging at termination temperature of 180℃ with 40 ℃/h, the mechanical properties of the alloy can reach that by peak aging with only 2 h aging time. The size of precipitated phase in the alloy increases gradually with the decrease of the rate of heating and the increase of the temperature at the end of the heating.

关 键 词：AL-ZN-MG-CU合金 力学性能 升温时效 析出相 

分 类 号：TG166.3[金属学及工艺—热处理]