Electron beam welding method for titanium-aluminum dissimilar metal

The invention discloses an electron beam welding method for titanium-aluminum dissimilar metal. The electron beam welding method for the titanium-aluminum dissimilar metal comprises a pre-welding preparation step and a welding process step. In the case of a titanium-aluminum dissimilar metal joint obtained after connection through the provided electron beam welding method for the titanium-aluminumdissimilar metal, no defects such as gas holes, cracks and inclusions are found in macro-metallographic structures at the connection portion, and the strength of the joint can reach 210 MPa through tensile test testing. 一种钛-铝异种金属电子束焊接方法，包括焊前准备步骤和焊接过程步骤，采用本发明提供的铝钛异种金属的电子束焊接方法连接后的钛-铝异种金属接头在连接处低倍金相组织中未发现气孔、裂纹、夹杂等缺陷，通过拉伸试验测试，接头强度可达到210MPa。