形变及热处理对Fe-Ni-Co-Al-Ti合金的影响  

Effect of Deformation and Heat Treatment on Fe-Ni-Co-Al-Ti Alloy

作　　者：胡林[1] 王斌[2] 袁均平[2] 刘会群[2] 杨胜[2] 黄道远[2] 

机构地区：[1]昆明有色冶金设计研究院股份公司,云南昆明650051 [2]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《有色金属设计》2015年第1期27-33,共7页Nonferrous Metals Design

摘　　要：采用真空高频感应熔炼技术制备合金,通过光学金相显微镜(OM)、透射电子显微镜(TEM)、X射线衍射技术(XRD)、电子万能拉伸试验机、显微硬度计等手段研究分析了热变形行为及热处理对Fe-33.5Ni-3Co-1.5Al-2.5Ti合金的微观组织及力学性能的影响。研究表明,合金经970℃固溶处理1.5 h,再经660℃时效7.5 h后能获得最佳的力学性能,其抗拉强度为1 220 MPa,显微硬度为440 HV0.05,延伸率为10.1%。The Fe- 33. 5Ni- 3Co- 1. 5Al- 2. 5Ti alloy was prepared by vacuum high frequency induction melting method. Using optical microscopy（ OM）,transmission electronic microscopy（ TEM）,X- ray diffraction（ XRD）,electronic universal tensile testing machine and microhardness tester,the effect of thermal deformation and heat treatment on microstructure and mechanical properties of the alloy were investigated. The results show that after the solution treatment at 970℃ for 1. 5 h firstly followed by the aging treatment at 660℃ for 7. 5 h,the mechanical properties of the alloy was optimal with tensile strength of 1220 MPa,microhardness of 440 HV0. 05 and elongation of 10. 1%.

关 键 词：热变形 热处理 力学性能 显微组织 

分 类 号：TG306[金属学及工艺—金属压力加工] TG156