碳化物析出型渗碳(CDC)最佳碳势的理论研究  

Theoretical Research of the Optimal Carbon Potential for Carbide Dispersion Carburizing (CDC)

作　　者：王殿梁[1] 任玉平[2] 郝士明[3] 

机构地区：[1]嘉兴学院机电工程学院,浙江嘉兴314001 [2]中国科学院金属研究所,沈阳110015 [3]东北大学材料与冶金学院,沈阳110004

出　　处：《包头职业技术学院学报》2006年第3期1-4,共4页Journal of Baotou Vocational & Technical College

基　　金：浙江省自然科学技术基金资助项目(No.Y404267)

摘　　要：利用双亚点阵模型求解了碳在Fe-C合金及Fe-M-C三元合金奥氏体中的活度,画出了碳在Fe-M-C三元合金奥氏体中的等活度线。将等活度线与Fe-V-C三元等温截面相图叠加,确定出落在γ+V_4C_3相区、活度最大的等活度线对应的碳势,即为Fe-V合金CDC处理时的理论最佳碳势(1.40%C)。实验结果与理论值刚好吻合。The activities of carbon in the austenite have been calculated by the two sub-lattice model in the Fe -C and Fe-M-C alloys, and the iso-activity curves of carbon are also illustrated in the Fe-M-C alloys. After the iso-activity curves are combined with the isothermal section of Fe-V-C ternary system, the corresponding carbon potential is determined through the maximum iso-activity curve located in the γ+ V_4C_3 phase region. The optimal carbon potential is theoretically 1.40 % C for the carbide dispersion carburizing (CDC) of Fe-V alloys. The experimental result is well in agreement with the theoretical value.

关 键 词：CDC 碳势 活度 碳化物 

分 类 号：TG156.81[金属学及工艺—热处理]