3Cr2W8V形变氮碳共渗研究  

Study on Deforming Nitrocarburburizing of 3Cr2W8V

作　　者：许爱民[1] 王忠诚[2] 刘科高[1] 袁新钢[1] 

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101 [2]济南沃德汽车零部件有限公司热处理分厂,山东济南250300

出　　处：《热加工工艺》2008年第6期53-55,共3页Hot Working Technology

基　　金：山东省自然科学基金资助项目(Y2006F34);山东省教育厅科技计划资助项目(J06008)

摘　　要：研究了3Cr2W8V热模具钢形变-氮碳共渗后的组织和力学性能。结果表明,形变方式不同,体现出不同的形变硬化趋势。小形变量使渗层深度增加,形变量加大渗层深度减少。塑性变形对渗层的白亮层和脉状氮化物形态有一定程度的影响。断口分析发现较小的塑性变形会使渗层韧性有所改善。The microstructure and mechanical properties of 3Cr2W8V steel after deforming-soft-nitriding were investigated, The results show that the different deforming ways lead to different hardening trend; The depth of the nitriding layer increases with the small quantity deformation while it will decrease with greater quantity deformation. The deformation has some effects on the white layer and the forms of range-like nitrides. Fracture analyses indicate that the small quantity deformation can improve the toughness of nitrided layer.

关 键 词：塑性变形 氮碳共渗 形变量 渗层深度 断口 

分 类 号：TG156.82[金属学及工艺—热处理]