不同时效温度下2519铝合金组织及力学性能的研究  

Influence of Aging Temperatures on Microstructure and Mechanical Properties of 2519 Aluminum Alloy

作　　者：张海军[1] 

机构地区：[1]河南警察学院,河南郑州450046

出　　处：《铸造技术》2014年第11期2591-2593,共3页Foundry Technology

摘　　要：采用拉伸性能测试、扫描电镜、显微硬度及透射电镜,研究了冷变形50%的2519铝合金组织及力学性能随时效温度的变化规律。结果表明,经时效处理后,冷变形50%的2519合金的力学性能均有所提高,随着时效温度的增加,合金达到力学性能峰值的时效缩短,但合金的塑性降低;经165和190℃时效处理后,合金晶体内部和晶界处出现θ′析出相,且随着时效温度的增加,θ′相出现粗化。Using tensile properties test, SEM, microhardness test and transmission electron microscopy （SEM）, the microstructure and mechanical properties of 50% cold rolled 2519 alloy under different aging temperatures were studied. The results show that, after aging treatment, the cold rolled 2519 alloy mechanical properties were improved, and by increasing aging temperatures, the time to achieve maximum mechanical properties decrease but with decreased plasticity; when aging at 165 and 190℃ ,θ＇ phases appeared in alloy grains and grain boundaries, and the increase of aging temperatures will cause θ＇phases coarsening.

关 键 词：2519铝合金 时效温度 形变热处理 

分 类 号：TG166.3[金属学及工艺—热处理] TG146.21[金属学及工艺—金属学]