固溶处理对800H合金组织和硬度的影响  

Effect of solution treatment on microstructure and hardness of 800H alloy

作　　者：黄燕[1] 戴起勋[1] 李冬升[1] 程晓农[1] 陶亚平[2] 刘瑜[2] 

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]江苏银环精密钢管股份有限公司,江苏宜兴214203

出　　处：《金属热处理》2012年第3期73-76,共4页Heat Treatment of Metals

基　　金：江苏省科技成果转化项目(BA2007033);镇江市工业支撑项目(GY2009004)

摘　　要：研究了不同固溶处理工艺对800H合金组织和硬度的影响。结果表明,不同固溶处理温度对800H合金晶粒尺寸有很大影响;1050～1200℃固溶处理时,晶粒正常长大,晶粒长大激活能Q=309.3 kJ/mol;1050～1100℃固溶处理后,晶内仍有大量未固溶的富铬碳化物;1150℃固溶后,晶内富铬碳化物基本溶解;在1200℃固溶处理时,随着保温时间的延长,晶粒正常长大;晶粒尺寸与硬度符合Hall-Petch关系。Effect of solution treatment on microstructure and hardness of 800H alloy was investigated.The results show that different solution treatment temperature has a great impact on grain size of 800H alloy.The grain grows up normally and the activation energy（Q） of grain growth is 309.3 kJ/mol at 1050-1200 ℃ solution.There are a large amount of undissolved chromium carbide in grain after solution treatment at 1050-1100 ℃.Chromium carbide in grain dissolves almost after 1150 ℃.At 1200 ℃ solution treatment,the grain grows up normally with the hold time increasing,and the relationship between grain size and hardness of 800H alloy conform to Hall-Petch relation.

关 键 词：800H合金 固溶处理 显微组织 硬度 

分 类 号：TG156.94[金属学及工艺—热处理]