奥氏体不锈钢2Cr25Ni20铸态组织下的碳化物固溶温度研究  

STUDY ON THE CEMENTED SOLUTION TEMPERATURE OF AUSTENITIC STAINLESS STEEL UNDER THE CAST STRUCTURE OF 2Cr25N120

作　　者：刘焕龙 孙玉强[3] 张胜涛 汪国凤 Liu Huanlong;Sun Yuqiang;Zhang Shengtao;Wang Guofeng(Xinxing Casting Pipe Co.,Ltd.;Anyang Iron and Steel Stock Co.,Ltd)

机构地区：[1]新兴铸管股份有限公司炼钢部,河北武安056308 [2]新兴铸管股份有限公司,河北武安056308 [3]安阳钢铁股份有限公司

出　　处：《河南冶金》2019年第4期17-19,45,共4页Henan Metallurgy

摘　　要：主要对奥氏体不锈钢2Cr25Ni20的铸件组织中晶界上碳化物的固溶温度进行了细致研究。研究发现,使用常规1 050~1 100℃下的固溶处理方法无法全部消除晶界大块状碳化物。经试验分析,在1 300℃保温2 h经淬火后取得了较好的固溶效果,为奥氏体不锈钢2Cr25Ni20铸件晶界碳化物的固溶处理提供了科学指导。In this paper,the solid solution temperature of carbides on grain boundary in austenitic stainless steel 2Cr25Ni20 casting was studied in detail.It indicated that the big carbides can’t be removed completely with the common solid solution methods at 1 050~1 100℃.After testing and analysis,a good solution was obtained after quenching at 1 300℃and retained 2 hours,which can provide scientific guidance for the solid solution treatment of grain boundary carbides in austenitic stainless steel 2Cr25Ni20 castings.

关 键 词：奥氏体不锈钢 2Cr25Ni20碳化物 固溶温度 

分 类 号：TG1[金属学及工艺—金属学]