时效温度对AM 355不锈钢组织和力学性能的影响  

Effects of Aging Temperatures on Microstructure and Mechanical Properties of AM 355 Stainless Steel

作　　者：梁盈[1] 陈炜[1] 高海亮 王红[1] 杜凯[1] 蒋申柱 LIANG Ying;CHEN Wei;GAO Hailiang;WANG Hong;DUKai;JIANGShenzhu(Shenyang Blower Works Group Corporation , Shenyang 110869 , Liaoning China;Huachen Automotive Group Holdings Co. , Ltd. , Shenyang 110869 , Liaoning China)

机构地区：[1]沈阳鼓风机集团股份有限公司,辽宁沈阳110869 [2]华晨汽车集团控股有限公司,辽宁沈阳110869

出　　处：《热处理》2018年第2期41-43,共3页Heat Treatment

摘　　要：对AM 355不锈钢进行了1 070℃固溶处理、-73℃冷处理,随后分别在200℃、240℃、300℃、340℃、400℃和480℃时效处理3 h。检测了钢的力学性能和显微组织。结果表明:AM 355不锈钢在低于300℃的温度时效后,其组织为回火马氏体和碳化物;随着时效温度的升高,有析出相出现,在480℃时效后析出相与基体仍保持共格关系。此外,随着时效温度的升高,钢的强度和硬度先降后升,塑性则先升后降。AM 355 stainless steel was solution treated at 1 070 ℃, cold treated at-73 ℃, and aged at 200, 240,300, 340, 400, and 480 ℃ for 3 h, respectively. Subsequently, the steel was subjected to microstructure survey and mechanical property measurements. The results showed that the steel exhibited tempered martensite and carbides after aging at temperatures lower than 300 ℃, and a precipitated phase after aging at temperatures higher than 300 ℃, with the precipitated phase having still coherent relation to the matrix after aging at 480 ℃.Furthermore, as the aging temperature became higher, the steel showed strength and hardness which first lowered and then rose, and plasticity which first rose and then lowered.

关 键 词：AM355不锈钢 冷处理 时效 显微组织 力学性能 

分 类 号：TG142.71[一般工业技术—材料科学与工程]