热处理工艺对Cr5型热作模具钢的组织性能影响研究  

Effect of Heat Treatment Process on the Microstructure and Properties of Cr5 Hot Work Die Steel

作　　者：李琳 彭占双 葛春景 Li Lin;Peng Zhanshuang;Ge Chunjing(Sinosteel Anshan Research Institute of Thermal Energy Co.,Ltd.,Anshan Liaoning 114020,China;Ansteel Group Chaoyang Iron and Steel Co.,Ltd.,Chaoyang Liaoning 122004,China)

机构地区：[1]中钢集团鞍山热能研究院有限公司,辽宁鞍山114020 [2]鞍钢集团朝阳钢铁有限公司,辽宁朝阳122004

出　　处：《山西冶金》2024年第8期49-52,共4页Shanxi Metallurgy

摘　　要：对Cr5型热作模具钢的扩散退火工艺和球化退火工艺进行相关研究,探讨各个工艺的保温时间对其碳化物的影响规律。根据TTT图制定热处理方案,改善组织的带状偏析;探究球化退火过程中,随着等温时间的延长,碳化物以未溶碳化物为核心逐渐长大,使显微组织分布得更加均匀;阐述相关组织形貌及转变机理,经验证,与显微组织分析的结果是相一致的。This study investigates the diffusion annealing process and spheroidization annealing process of Cr5 hot work die steel,and explores the influence of insulation time of each process on its carbides.Develop a heat treatment plan based on the TTT chart to improve the band segregation of the microstructure.During the process of spheroidization annealing,with the extension of isothermal time,the carbides gradually grow with insoluble carbides as the core,making the microstructure distribution more uniform.Elaborate on the relevant organizational morphology and transformation mechanism,which have been verified to be consistent with the results of microstructure analysis.

关 键 词：W350钢 扩散退火 球化退火 显微组织 

分 类 号：TG142.1[一般工业技术—材料科学与工程]