铼钛中间过渡层材料的真空电子束制备工艺

采用全自动闭环控制的真空电子束系统,制备出了组分连续变化且未见Ti5Re24脆性相产生的铼钛中间过渡层材料.由硬度测试结果可见,所有过渡层的表面硬度和端面硬度都高于钛合金和纯铼的硬度.总的趋势是随着合金粉末中Me含量的增加,其硬度降低,随着合金粉末中铼含量的增加,其硬度上升.同时,复合过渡层材料中铼的含量越高,其脆性越大,加工性能越差.

Vacuum Electron Beam Smelting Technology of the Re-Ti Intermediate Transition Layer

By fully automatic loop-locked controlling equipment of vacuum electron beam smelting, intermediate transition layer without brittle phase Ti_5Re_(24) has been obtained. And the components in the layer transit continuously. From the result of hardness measurement it can be seen that both the hardness solidness at the surface and terminal face of intermediate transition layer is higher than that of the titanium alloy and pure rhenium. In general, the hardness solidness decreases with the increasing of the Me content, and increases with the increasing of the rhenium content. At the same time, with the increasing of the rhenium content, the intermediate transition layer became more brittle and more difficult for processing.