650℃时效处理对2205双相不锈钢组织及硬度的影响  

Effect of Aging Treatment at 650 ℃ on the Phase Structure and Hardness of 2205 Duplex Stainless Steel

作　　者：范君伟[1] 殷俊林[1] 杜春风[1] 严彪[1] 

机构地区：[1]上海市金属功能材料开发应用重点实验室同济大学材料科学与工程学院,上海201804

出　　处：《热处理》2012年第1期30-34,共5页Heat Treatment

基　　金：国家973项目子课题(NO.2007CB613900);上海市科学技术发展基金(08DZ2201300);上海市纳米专项(0752nm004)资助项目

摘　　要：研究了650℃时效处理对2205双相不锈钢组织的影响,发现,650℃时效5 h,钢中开始有中间相析出,析出相集中在α相及α/γ相界。TEM物相分析表明,析出相有R相和σ相。此外,随着时效时间的延长,γ相的硬度无明显变化,而α相的硬度则逐渐升高。The effect of aging treatment at 650 ℃ on the phase structure of 2205 duplex stainless steel was investigated.The study reveals that intermediate phases begin to precipitate and concentrate at the α phase and α/γ phase boundaries in the steel when aged at 650 ℃ for 5 h.TEM phase analysis indicates that the precipitates are Rphase and σ phase.In addition,with the prolongation of aging time,the hardness of γ phase do not vary appreciably,but the hardness of α phase increases progressively.

关 键 词：2205双相不锈钢 时效处理 硬度 

分 类 号：TG142.71[一般工业技术—材料科学与工程]