热等静压对Mar M247合金组织及力学性能的影响  

Effect of Hot Isostatic Pressing on Microstructures and Mechanical Properties of Mar M247 Alloy

作　　者：贺群功 李林蓄 高振桓[1,2] 杨功显 曾洪[1,2] 杨照宏 HE Qungong;LI Linxu;GAO Zhenhuan;YANG Gongxian;ZENG Hong;YANG Zhaohong(State Key Laboratory of Long-life High Temperature Materials,Deyang 618000,Sichuan Province,China;Dongfang Turbine Co.,Ltd.,Deyang 618000,Sichuan Province,China)

机构地区：[1]长寿命高温材料国家重点实验室,四川德阳618000 [2]东方汽轮机有限公司,四川德阳618000

出　　处：《动力工程学报》2019年第10期860-864,共5页Journal of Chinese Society of Power Engineering

摘　　要：研究了热等静压处理对Mar M247合金精密铸件微观组织和力学性能的影响。结果表明:热等静压处理可以消除铸件显微疏松,提高致密度,改善显微组织,降低合金偏析,大幅度提高了铸件的冲击性能、拉伸性能和持久性能;热等静压处理减小了致密度和力学性能等数据的离散度。The effect of hot isostatic pressing(HIP) on the microstructure and the mechanical properties of precision casting Mar M247 was investigated. Results show that the hot isostatic pressing helps to eliminate the microporosities, increase the density, improve the microstructure, and reduce the segregation of the alloy, leading to greatly improved impact property, tensile property and stress rupture property of the material. Meanwhile, the data dispersion of density and mechanical properties could be reduced for the alloy by hot isostatic pressing.

关 键 词：MAR M247 热等静压 显微疏松 致密度 力学性能 

分 类 号：TG249.5[机械工程—精密仪器及机械]