钇对H13钢中夹杂物的影响  

Effect of Yttrium on Inclusions in H13 Steel

作　　者：舒瑞熙 杨忠民[1] 曹燕光 李昭东[1] 陈颖[1] 王慧敏[1] Shu Ruixi;Yang Zhongmin;Cao Yanguang;Li Zhaodong;Chen Ying;Wang Huimin(Institute for Structural Steels,Central Iron and Steel Research Institute,Beijing 100081,China)

机构地区：[1]钢铁研究总院工程用钢研究所,北京100081

出　　处：《中国稀土学报》2023年第2期355-361,共7页Journal of the Chinese Society of Rare Earths

基　　金：江西省重点研发计划重点项目(20192ACB50010)资助。

摘　　要：研究了不同Y含量对H13模具钢中夹杂物的种类、形态、尺寸和成分等的影响机制。实验室采用电渣重熔冶炼添加Y获得了Y含量分别0.0008%,0.006%和0.012%(质量分数)的H13电渣锭。利用OM,SEM,ASPEX和热力学计算等方法研究Y对钢中夹杂物的影响。结果表明,不添加稀土的H13钢中夹杂物以MgO·Al_(2)O_(3)外包覆(Cr,V,Mo)C的复合夹杂为主;Y添加量为0.0008%的H13钢材中夹杂物以YAlO_(3)外包覆(Cr,V,Mo)C的复合夹杂物为主;Y添加量为0.006%的H13钢中夹杂物以YAlO_(3)和YAlO_(3)外包覆(Cr,V,Mo)C的复合夹杂物为主;Y添加量为0.012%的H13钢中夹杂物以单独存在的Y_(2)O_(3),YS·Y_(2)O_(3),YS外包覆(Cr,V,Mo)C的复合夹杂物为主。当H13钢中的Y达到0.012%时,钢中尺寸小于5μm的夹杂物占96%以上。Different amounts of rare earth yttrium were added to H13 die steel to study the effect of Y on the type,form,size and composition of inclusions in steel.By adding Y to the electroslag and remelting and smelting them,the laboratory obtained H13 electroslag ingots with Y contents of 0.0008%,0.006%and 0.012%.The analysis was carried out by means of OM,SEM,ASPEX and thermodynamics software.The results show that the main inclusions in H13 die steel without any Y are MgO·Al_(2)O_(3) covered by(Cr,V,Mo)C.The inclusions in H13 die steel with 0.0008%Y are mainly YAlO_(3) covered by(Cr,V,Mo)C.The inclusions in H13 die steel with 0.006%Y are mainly YAlO_(3) and YAlO_(3) covered by(Cr,V,Mo)C.The inclusions in H13 die steel with 0.012%Y are mainly Y_(2)O_(3),YS-Y_(2)O_(3) and Y covered by(Cr,V,Mo)C.When 0.012%of Y is added,inclusions smaller than 5μm account for more than 96%of the total.

关 键 词：稀土钇 夹杂物 H13钢 

分 类 号：TG142.1[一般工业技术—材料科学与工程]