时效对0Cr15Ni5Cu2Ti钢组织与性能的影响  

Effect of aging process on microstructure and mechanical properties of 0Cr15Ni5Cu2Ti steel

作　　者：钟平[1] 刘建华[2] 于刚 王俊丽[1] 

机构地区：[1]北京航空材料研究院,北京100095 [2]北京航空航天大学,北京100083 [3]沈飞公司,辽宁沈阳110034

出　　处：《材料热处理学报》2006年第1期58-62,共5页Transactions of Materials and Heat Treatment

摘　　要：研究了960℃和1000℃固溶处理后,时效对马氏体沉淀硬化不锈钢0Cr15Ni5Cu2Ti微观组织与力学性能影响。结果表明,采用960℃和1000℃固溶处理,在455～460℃时效冲击值出现最低值,断口表现为准解理;强度和硬度在460℃时效出现峰值。主要与组织中细小富铜相共格析出有关。随着时效温度增加,钢中富铜相长大,强度和硬度也随之降低。The effects of aging process on microstructure and mechanical properties of martensitic precipitation hardening stainless steel 0Cr15Ni5Cu2Ti were examined.The results show that,the impact toughness of the steel aged at 455～460℃ is the lowest. The maximum ultimate tensile strength and hardness are reached after aging at 460℃ due to the coherent precipitation of fine copper particles.however, the strength and hardness decrease for the steel, aged at highter temperatures due to the copper-rich precipitate coarsening.

关 键 词：时效 富铜相 力学性能 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG113[金属学及工艺—金属材料]