Ti-Ni固相相界面的扩散研究  

Study on Solid-phase Diffusion of Ti-Ni Interface

作　　者：吕玉荣[1] 李博[1] 杨泽亮 李世春[3] 

机构地区：[1]鹤壁职业技术学院交通与材料工程学院 [2]中国石油天然气管道局天津设计院 [3]中国石油大学(华东)机电工程学院

出　　处：《特种铸造及有色合金》2014年第7期751-753,共3页Special Casting & Nonferrous Alloys

摘　　要：采用“铆钉法”制备了界面为曲面的Ti-Ni二元扩散偶，并将扩散偶置于真空退火炉中进行热处理。利用彩色金相技术观察在500～700℃范围内真空烧结不同时间时界面的扩散情况。结果表明，扩散层的厚度随烧结温度的提高和保温时间的延长而增厚；扩散层由不同的亚层组成。Ti-Ni diffusion couples with curving interfaces were prepared by mechanical method. The heat treatments of diffusion couples were carried out at 500～700 ℃ in vacuum annealing furnace. The inter- face diffusion of Ti-Ni diffusion couples were observed with different vacuum sintering time at 500～700 ℃ by means of color metallograph. The results show that the thickness of diffusion layer is increased with the increase of sintering temperature and holding time. And the diffusion layer is composed of dif- ferent sublayer.

关 键 词：Ti-Ni扩散偶 相界面 扩散层 金属间化合物 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG146.15[金属学及工艺—金属材料]