The titanium alloy lattice with BCC and DOD structure is prepared by laser selective melting. Micro– CT is used to scan and 3D reconstruct the titanium alloy lattice materials with these two kinds of structures. Clear internal structure can be seen in these lattices and a few round and oval defects can be found. BCC and DOD cells are arranged neatly and periodically with no slag

collapse or rod bending. Through comparison of CATIA model and 3D reconstruction data of lattice structures

it is found that the alloy lattice is bended. In addition

the surface roughness of BCC and DOD metal lattices is measured and calculated using confocal microscope based on Micro–CT image. The results show that Micro–CT has significant application value in the characterization of the internal structure

defects

preparation errors and roughness testing of titanium alloy lattice materials.