基于箔带材Ni-Ti合金的真空热压工艺研究  

Study on the vacuum hot-pressed technology of Ni-Ti alloys based on Ni and Ti foils

作　　者：徐培好[1] 齐彪[1] 侯肖瑞[1] 苏莹[1] 王常春[1] 卢庆亮[1] 闵光辉[1] 

机构地区：[1]山东大学材料科学与工程学院,山东济南250061

出　　处：《山东大学学报（工学版）》2006年第2期1-3,66,共4页Journal of Shandong University（Engineering Science）

基　　金：教育部留学回国人员科研启动基金资助项目(2003.406)

摘　　要：利用Ti箔(厚0.04 mm)和Ni箔(厚0.02 mm)交替叠加,并采用真空热压法制备Ni-Ti合金.结果表明:在温度700℃,压力12.5 MPa,保温1 h工艺条件下制备的Ni-Ti合金中存在明显的扩散层,界面处生成金属间化合物TiNi和Ti3Ni;当压力和保温时间不变,温度为850℃时,制备的合金中Ni,Ti之间充分扩散;在850℃时制备的试样在900℃进行2 h固溶处理后,硬度达到474 HV,随后在低温500℃进行2 h时效处理,硬度降低为418 HV.Ni-Ti alloys were produced by vacuum hot-pressing technology and alternately piling up titanium foil of 0.04 mm and nickle one of 0.02 mm in thickness. The results show as follows： the diffusion layers are observed in Ni-Ti alloys produced at 700 ℃ and 12.5 MPa for lh, and TiNi and Ti3Ni intermetallic phases are formed at interface by reactive diffusion; a relatively homogeneous structure of TiNi are obtained at 850 ℃ and 12.5 MPa for 1 h; the hardness of alloys produced 850 ℃ and 12.5 MPa for 1 h increases to 474 HV by solid solution treatment at 900 ℃ for 2 h, and reduceds to 418 HV by subsequent ageing treatment at 500 ℃ for 2 h.

关 键 词：Ni—Ti合金 真空热压法 热处理 

分 类 号：TG146.15[一般工业技术—材料科学与工程]