时效温度对PH13-8Mo不锈钢组织和力学性能的影响  

Effects of Aging Temperature on Microstructure and Mechanical Properties of PH13-8Mo Stainless Steel

作　　者：张湛[1] 薛春[1] 黄春波[1] 陈有光 王玲奇 陆超 

机构地区：[1]上海材料研究所,上海200437 [2]上海市轴承技术研究所,上海200031

出　　处：《机械工程材料》2014年第11期72-75,共4页Materials For Mechanical Engineering

基　　金：上海市科委军民两用项目(11DZ1110100)

摘　　要：将PH13-8Mo不锈钢在930℃固溶1h后,再在480,510,540,565,590,620℃下时效4h,研究了时效温度对试验钢显微组织和力学性能的影响。结果表明：试验钢在510℃时效后具有最高的硬度和强度,并保持了足够的冲击韧性,具有较好的综合力学性能;在510~620℃时效时,随着时效温度升高,硬度和强度下降,冲击韧性升高;试验钢在480℃时效后开始析出金属间化合物Ni3Al,该析出相随着时效温度升高逐渐长大和增多。Solid solution treatment at 930 ℃for 1hand following by aging at 480,510,540,565,590,620℃for 4hwere carried out to study the effects of aging temperature on microstructure and mechanical properties of PH13-8Mo stainless steel.The results show that,PH13-8Mo stainless steel had better comprehensive mechanical properties,such as the highest hardness and strength and enough impact toughness,after aging at 510 ℃.When aging at 510-620℃,the hardness and strength decreased and impact toughness increased with the increase of aging temperature.PH13-8Mo stainless steel began to precipitate the intermetallic compound Ni3 Al when aging at 480℃,and the precipitates gradually grew up and increased in number gradually with the increase of aging temperature.

关 键 词：PH13-8Mo不锈钢 时效强化 力学性能 

分 类 号：TB31[一般工业技术—材料科学与工程]