固溶处理对A286合金组织与硬度的影响  

Effect of solution treatment on microstructure and hardness of A286 alloy

作　　者：李吉东 王岩[1,2] 谷宇[1,2] 王斌[1,2] Li Jidong;Wang Yan;Gu Yu;Wang Bin(State Key Laboratory of Advanced Stainless Steel Materials,Taiyuan Iron&Steel(Group)Co.,Ltd.,Taiyuan Shanxi 030003,China;Technology Center,Shanxi Taiyuan Stainless Steel Co.,Ltd.,Taiyuan Shanxi 030003,China)

机构地区：[1]太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,山西太原030003 [2]山西太钢不锈钢股份有限公司技术中心,山西太原030003

出　　处：《金属热处理》2023年第2期223-227,共5页Heat Treatment of Metals

摘　　要：通过光学显微镜、扫描电镜和洛氏硬度计等研究了固溶温度(980、1000、1020℃)和保温时间(60、90、120 min)对A286合金微观组织和硬度的影响。结果表明,热轧态合金基体为再结晶的均匀奥氏体晶粒组织,同时存在一次碳氮化物。随着固溶温度的升高和保温时间的延长,再结晶晶粒优先从表面生长并逐渐向内部扩展,晶界有较大尺寸磷化物析出,合金硬度小幅度降低。Effects of solution treatment temperature(980, 1000, 1020 ℃) and holding time(60, 90, 120 min) on microstructure and hardness of the A286 alloy were studied by means of optical microscope, scanning electron microscope and Rockwell hardness tester. The results show that the hot rolled alloy matrix is a homogeneous recrystallized austenitic grain structure, with primary carbonitrides in it. With the increase of solution treatment temperature and holding time, the recrystallized grains preferentially grow from the surface and gradually expand to the inside, and phosphides with larger size are precipitated on the grain boundary, the hardness of the alloy decreases slightly.

关 键 词：A286合金 固溶处理 微观组织 硬度 

分 类 号：TG156.94[金属学及工艺—热处理]