不同固溶温度对718合金组织及力学性能的影响  

Effect of Different Solid-solution Treatment on Microstructure and Mechanical Properties of Alloy 718

作　　者：王明波[1,2] 王东哲[1,2] 刘海定[1,2] 李永友[1,2] 赵安中[1,2] 代礼斌[1,2] 王春光[1,2] 

机构地区：[1]重庆材料研究院有限公司,重庆400707 [2]国家仪表功能材料工程技术研究中心,重庆400707

出　　处：《材料导报（纳米与新材料专辑）》2014年第1期419-421,共3页

基　　金：国家863计划(2013AA031005);重庆市科委应用技术项目(cstc2013yykfB50003)

摘　　要：研究了不同固溶温度和保温时间对718合金晶粒度以及力学性能的影响。结果表明:随着固溶温度的提高和保温时间的延长,合金的晶粒度减小;在低于1000℃固溶时,未溶解的δ相使晶粒长大缓慢;高于1050℃固溶时,合金晶粒度随温度的升高迅速增大。随固溶温度的升高,合金室温强度和硬度降低,而塑性和韧性均升高。The effects of different solid-solution temperature and holding time on grain size and mechanicalproperties of alloy 718 were investigated. The results show that the grain size grows up with the increase of holdingtime when the alloy is heat treated at elevated solid-solution temperature. The grain size increases slowly because ofthe existence of delta phase when solid-solution temperature below 1000 ℃, whereas the grain size increases quicklywhen solid-solution temperature beyond 1050 ℃. At room temperature, the strength and ductility of 718 grow up withsolution treatment temperature increasing, however, the hardness of alloy 718 decreases,

关 键 词：718合金 固溶温度 保温时间 品粒度 硬度 

分 类 号：TG156.94[金属学及工艺—热处理]