碳含量对热铸模具钢组织和力学性能的影响  

Effects of Carbon Content on Microstructure and Mechanical Properties of Die Steel

作　　者：罗吉祥[1] 

机构地区：[1]南昌工程学院,江西南昌330029

出　　处：《热加工工艺》2015年第16期104-106,共3页Hot Working Technology

基　　金：国家自然科学基金(51409140)

摘　　要：以含碳热铸模具钢为研究对象,分析碳含量对模具钢组织和力学性能的影响。结果表明,随碳含量的变化,热铸模具钢的磨损形貌发生明显变化,并且在磨损的部位存在着剥落区和未剥落区两部分。结果表明,在磨损表面存在着一层明显的氧化物,这层氧化物的存在增加了磨具钢的耐磨性。随碳含量的增加,不同回火温度下模具钢的磨损率均大幅减少,而模具钢的硬度则呈现出不同的变化趋势。Taking hot die steel with carbon as research object, the effects of carbon content on the microstructure and mechanical properties of the steel were investigated. The results show that there is obviously change which could be separated from chipping area and unchipping area. The EDS shows that there are oxide materials over the wear area, which can improve the wear property of steel. The wear rate decreases drastically with carbon content increasing, while the hardness displays different trends at different tempering temperatures.

关 键 词：模具钢 磨损率 热处理 

分 类 号：TG156.3[金属学及工艺—热处理]