W, Mo, Co Co-diffusion on Steel with Different Carbon Content

作     者：ZHANGYan-mei LIZhong-hou LIUYan-ping XUZhong ZHANG Yan-mei, LI Zhong-hou, LIU Yan-ping, XU Zhong Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan, China

作者机构：ResearchInstituteofSurfaceEngineeringTaiyuanUniversityofTechnologyTaiyuanChina 

出 版 物：《材料热处理学报》 (Transactions of Materials and Heat Treatment)

年 卷 期：2004年第25卷第05B期

页      面：688-691页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Natural Science Foundation of Shanxi Province under Contract Number 20021054 the Youth Science Foundation of Taiyuan University of Technology under Contract Number 190-100003 

主　　题：碳含量 表面铸合 碳钢 硬度 脆性 钼钴共扩散 

摘      要：Tungsten, molybdenum and cobalt were co-diffused into the surface of ingot, 20 steel, 45 steel and T8 steel by a double glow plasma surface alloying technique. Surface alloyed layers formed on ingot and 20 steel are composed of -Fe +(Fe,Co)7(W,Mo)6, which possess the same strong age-hardening ability as the metallurgical age-hardened high speed steel, the maximum hardness can reach 1100 HV0.o25 after ageing treatment. Surface alloyed layers formed on 45 steel and T8 steel are composed of M6C, hardness of which are over 1100-1400 HV0.o25- Alloyed layers formed on ingot and 20 steel possess good toughness. Alloyed layer of carbide type exhibits slightly brittleness.