新型H13基体钢的热稳定性  

Thermal stability of a novel H13 die steel

作　　者：刘恒三 祁晔思 左玲立 马祖斌 赵昌德 陈蕴博 LIU Heng-san;QI Ye-si;ZUO Ling-li;MA Zu-bin;ZHAO Chang-de;CHEN Yun-bo(State Key Laboratory of Advanced Fqrming Technology and Equipment,Beijing National Innovation Institute of Lightweight Ld,Beijing 100083,China;Jinma Industrial Group Co Ltd,Rizhao 276826,China)

机构地区：[1]北京机科国创轻量化科学研究院有限公司先进成形技术与装备国家重点实验室,北京100083 [2]金马工业集团股份有限公司,山东日照276826

出　　处：《材料热处理学报》2020年第7期151-157,共7页Transactions of Materials and Heat Treatment

基　　金：山东省泰山产业领军人才项目。

摘　　要：通过改变原H13钢的合金成分,设计了3种新型H13基体钢,采用扫描电镜、显微硬度计和力学性能测试等研究了实验钢的组织和性能,并对其热稳定性进行了研究。结果表明:新型H13基体钢组织中析出的碳化物较原H13钢更为均匀细小,热稳定性有了大幅度的提高;对原H13钢的成分进行合理调整后,Si含量提高到了1.5%,Cr含量降低并提高Mo含量,使得新型H13基体钢的回火组织更加稳定,有利于提高其热稳定性。By changing the alloy composition of the original H13 die steel, three novel H13 die steels were designed. Microstructure and properties of the experimental steels were studied by means of scanning electron microscopy, microhardness tester and mechanical properties test, and their thermal stability was also studied. The results show that the carbides precipitated in the novel H13 die steel is more uniform and fine than the original H13 die steel, and the thermal stability is greatly improved. After reasonable adjustment of the composition of the original H13 die steel, the Si content is increased to 1.5%, the Cr content is reduced and the Mo content is increased, which makes the tempering microstructure of the novel die steel more stable and conducive to improving its thermal stability.

关 键 词：热作模具钢 热稳定性 碳化物 

分 类 号：TG142.3[一般工业技术—材料科学与工程]