中文摘要：

处于同样伪造、对待热的状态， Ti-24Al-15Nb-1.5Mo 合金被电子横梁与 135 和 150 kJ/m 的热输入焊接加入到同样伪造的 TC11 钛合金。然后，焊接接口的 Ti-24Al-15Nb- 1.5Mo/TC11 的微观结构和性质被调查。结果证明焊接的阶段体质不与热输入有关，并且主要由α′阶段组成。而且， Ti2AlNb， MoNb， Nb3Al，和 TiAl3 的金属间化合的阶段在焊接地区被形成。因此，焊接地区的微坚硬价值比在一样的样品的另外的部分的高。焊接的侧面是一相称性地像漏斗。焊接和它的影响热的地区的谷物尺寸与增加热输入被增加。在焊接接口的元素内容有明显的差别；在熔化地区的仅仅 alloying 元素在团结期间到达新平衡。

英文摘要：

The Ti-24Al-15Nb-1.5Mo alloy, in the as-forged and heat-treated states, was joined to the as-forged TC 11 titanium alloy by electron beam welding with the heat inputs of 135 and 150 kJ/m. Then the microstructure and property of the Ti-24Al-15Nb- 1.5Mo/TC 11 welding interface were investigated. The results show that the phase constitution of the weld is not related to the heat input, and is mainly composed of α＇ phase. Moreover, the intermetallic phases of TiEAlNb, MoNb, NbaAl, and TiAl3 are formed in the weld zone. Therefore, the microhardness value of the weld zone is higher than that of the other portions in the same sample. The profile of the weld is asymmetrically fimnel-like. The grain sizes of the weld and its heat-affected zones are increased with increasing heat input. There is an obvious difference in the element content of the welding interface; only the alloying elements in the fusion zone reach a new balance during solidification.