稀土合金化对高碳高合金工模具钢的影响  

Effect of Rare Earth Alloying on High-carbon High-alloy Tool and Die Steel

作　　者：戴宇恒 满廷慧 李朋 徐乐钱 刘宇[2] 韦习成[1] DAI Yuheng;MAN Tinghui;LI Peng;XU Leqian;LIU Yu;WEI Xicheng(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Zhejiang Institute of Advanced Materials,Shanghai University,Jiashan 314113,Zhejiang,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]上海大学(浙江)高端装备基础件材料研究院,浙江嘉善314113

出　　处：《材料导报》2024年第23期226-233,共8页Materials Reports

摘　　要：莱氏体共晶碳化物粗大不均是严重影响高碳高合金工模具钢使役性能的不利因素。除了改变凝固冷却条件调控莱氏体共晶碳化物以外,国内外在利用稀土合金化手段改善共晶碳化物的形貌与分布方面也进行了大量研究,来提高高碳高合金工模具钢的热加工性能与韧性。本文简要介绍了高碳高合金工模具钢的生产工艺现状,阐述了高碳高合金工模具钢稀土合金化的研究进展,对比总结了稀土合金化研究现状中稀土元素的添加技术与添加量。另外,重点梳理了稀土合金化对高碳高合金工模具钢组织与性能的影响。最后,展望了稀土高碳高合金工模具钢的工业化生产与应用。The coarse and uneven eutectic carbides in ledeburiteare the unfavorable factors that seriously affect the service performance of high-carbon high-alloy tool and die steels.Except for changing the solidification cooling conditions to control the eutectic carbides,rare earth alloying method is studied extensively at home and abroad to improve the morphology and distribution of eutectic carbides,consequently to enhance the hot working performance and toughness of high-carbon high-alloy tool and die steels.This paper briefly introduces the status of production processes for high-carbon high-alloy tool and die steels,then discusses the current research advancements in rare earth alloying,and then summarizes the existed researches on the rare earth elements addition technology and their optimal addition amount.The effects of rare earth alloying on the microstructures and properties of high-carbon high-alloy tool and die steels are emphatically demonstrated.Finally,the industrial production and application of rare earth high-carbon high-alloy tool and die steels are prospected.

关 键 词：高碳高合金工模具钢 生产工艺 稀土合金化 共晶碳化物 

分 类 号：TG142.71[一般工业技术—材料科学与工程]