Abstract：The microstructure and properties of TA1 alloy prepared by selective laser melting (SLM) were investigated.
The results show that the TA1 alloy prepared by SLM has excellent mechanical properties and its tensile
strength, elongation and reduction of aera all meet the requirements of GJB 2744A-2007. Especially the tensile
strength reaches more than 600 MPa. The performance of the 3D printed parts is slightly different in different printing
directions XYZ. The Y direction is the best, the X direction is better, and the Z direction is good(580 MPa). After
annealing, the samples have more uniform microstructure, and the tensile strength, shrinkage and hardness of
the samples reduced slightly, and the elongation increased slightly. The TA1 alloy prepared by SLM can replace
forgings in the application of complex precision parts, and save raw materials, which may be providing reference
for the printing application of 3D printing TA1 alloy.
2022, Vol. 32 
