两种不同类型热作模具钢的使用性能研究  

INVESTIGATION ON THE PROPERTIES OF TWO DIFFERENT TYPES OF HOT DIE STEELS

作　　者：佟倩[1] 吴晓春[1] 闵娜[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《上海金属》2010年第2期12-15,共4页Shanghai Metals

基　　金：国家科技支撑计划课题(2007BAE51B04);宝山钢铁股份有限公司项目

摘　　要：对马氏体型热作模具钢SDH3和奥氏体型热作模具钢SDHA作了对比分析,研究了两者在力学性能、热稳定性和热疲劳性能方面的区别。结果表明:SDH3钢具备良好的热稳定性和热疲劳性能,可以满足通用热作模具钢的使用要求;SDHA钢经固溶和时效处理后,在750℃×20h长时间保温过程中,硬度保持稳定,表明可以用于制作工作温度在700℃以上的热作模具。The properties between two kinds of hot die steels of martensite type SDH3 and austenite type SDHA were compared, including the mechanical property, thermostability and thermal fatigue property. The results indicated that steel SDH3 had favorable thermostability and thermal fa- tigue property, which could meet the normal usage requirement of hot die steel. After solid solution and age treatment, the hardness of steel SDHA could keep stable during holding process at 750℃ for 20 h, suggesting that steel could be used as the hot die working above 700 ℃ .

关 键 词：马氏体热作模具钢 奥氏体热作模具钢 热稳定性 热疲劳性能 

分 类 号：TG142.45[一般工业技术—材料科学与工程]