石墨烯增强镍基粉末高温合金复合材料的力学性能  

Mechanical Properties of Graphene Reinforced Nickel-based P/M Superalloy

作　　者：吉传波[1] 王晓峰[1] 邹金文[1] 杨杰[1] 

机构地区：[1]北京航空材料研究院先进高温结构材料重点实验室,北京100095

出　　处：《材料工程》2017年第3期1-6,共6页Journal of Materials Engineering

摘　　要：采用湿混法将石墨烯纳米片分散到高温合金粉末中,并采用热等静压+热挤压+等温锻造+热处理的方法制备出FGH96镍基粉末高温合金。结果表明:石墨烯纳米片在高温合金中分散均匀,初步发现在后续的热工艺过程中并未发生变性;添加0.1%(质量分数)的石墨烯后,室温抗拉强度和屈服强度分别提高了58MPa和43MPa,塑性从21.0%提高到37.3%;650℃条件下抗拉强度和屈服强度分别提高了58MPa和28MPa,塑性从18.5%提高到26.5%。此外对石墨烯增强FGH96镍基高温合金力学性能的作用机制也进行了进一步分析。The graphene nanosheets were dispersed in the superalloy powder by using the wet mixing method,and then the nickel based FGH96P/M superalloy was prepared with hot isostatic pressing（HIP）＋hot extrusion（HEX）＋hot isothermal forging（HIF）＋heat treating（HT）processes.The results show that the graphene well disperses in the superalloy powder and keeps its original form during the following hot processing.After 0.1%（mass fraction）graphene is added,the average room temperature tensile strength and yield strength increase by 58 MPa and 43 MPa respectively,and the ductility increases from 21.0% to 37.3%;the tensile strength and yield strength at 650℃ increase by58 MPa and 28 MPa,and the ductility increases from 18.5%to 26.5%.The mechanism of strengthening and toughening reinforcement was also analyzed based on graphene reinforced FGH96 superalloy.

关 键 词：石墨烯 粉末高温合金 湿混 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程]