Characterization of Ti-48Al-2Cr-2Nb built by selective laser melting

[摘要] Selective laser melting was applied to TiAl4822. Electron beam melting has been a major additive manufacturing process for TiAl4822, but ductility is a technical challenge with EBM. This research investigates the microstructure and the tensile properties of TiAl4822 fabricated by a new SLM machine equipped with a heating unit. The elongation of the SLM specimen was 8.3 times that of the EBM specimen; this was attributable to the theta-phase- based homogeneous fine grains in the SLM. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

[发布日期] 2021-10-01