Microstructure Features of Ti-6Al-4V Alloy Deposited by Laser Direct Deposition
Laser direct deposition of fully density metallic components is an advanced technology directly manufacturing metallic components to use a combining technology of rapid prototyping and high power laser cladding. Now researches have indicated that the laser direct deposition of titanium components is most definitely applied domain for this technology, and particularly obvious economic effects can be achieved in the field of manufacturing titanium aerial components. The present paper directs toward the laser direct deposition of Ti-6Al-4V alloy analyzed pattern features of molten pool and microstructure features of single-track build, multi-tracks overlap build, packing build. Through analysis, the bonding condition between cladding track and substrate has been disclosed, and the microstructure features in as-deposited zone and heat-affected zone have been indicated, as well as the influence of the overlap rate, track number of the multi-track overlap, and manner of the packing build on as-deposited microstructures has been explained.
S.Y. Gao et al., "Microstructure Features of Ti-6Al-4V Alloy Deposited by Laser Direct Deposition", Advanced Materials Research, Vol. 902, pp. 45-51, 2014