热处理工艺对低合金耐磨铸钢组织和性能的影响  

Influence of Heat Treatment on Mechanical Properties and Microstructure of Low Alloy Wear Resistant Cast Steel

作　　者：胡志军[1] 赵小朋[1] 杨弋涛[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《铸造技术》2012年第6期660-663,共4页Foundry Technology

摘　　要：借鉴真空熔炼钮扣锭制备试样的实验方法,研究了正火温度及回火温度对低合金耐磨铸钢组织和性能的影响。结果表明,正火使晶粒细化,硬度增加。随着正火温度从890℃到940℃变化,硬度先降低后升高,在920℃时最低。经过890℃正火以及分别在500、530、560、590、620和650℃下回火,得到试样力学性能变化规律。The influences of normalizing and tempering temperature on mechanical properties and microstructure of low alloy wear resistant cast steel were investigated by using vacuum arc furnace in lab situation. The results show that normalizing can refine the grain and increase hardness. Hardness increases with the increase of normalizing temperature from 890℃ to 920℃, while exceed normalizing temperature from 920 ℃ to 940 ℃ makes the hardness of the steel decrease. The steel was tempered at 500, 530, 560, 590, 620 and 650℃, respectively, after normalized at 890℃, a rule of controlling mechanical properties of the steel can be obtained. Key

关 键 词：低合金耐磨铸钢 真空熔铸 物理模拟 显微组织 力学性能 

分 类 号：TG161[金属学及工艺—热处理]