Simulation of Cooling Rate Effects on Ti-6Al-4V Microstructure Tailoring in Direct Laser Deposition
Transient temperature history is vital in direct laser deposition (DLD) because it reveals the cooling rate at specific temperatures, which directly relates to phase transformation and types of microstructure formed in deposit. FEA simulation was employed to study the transient temperature history and cooling rate at different experimental setups in Ti-48Al-2Cr-2Nb DLD process. In this paper, an innovative model was described, which combines a moving Gaussian distribution heat source and element birth and death technology in ANSYS, help to analysis cooling rate control method and guide crack-free deposits build process.
L. Yan et al., "Simulation of Cooling Rate Effects on Ti-48Al-2Cr-2Nb Crack Formation in Direct Laser Deposition," Proceedings of the 27th Annual Solid Freeform Fabrication Symposium (2016, Austin, TX), pp. 680-690, University of Texas at Austin, Aug 2016.
27th Annual International Solid Freeform Fabrication Symposium (2016: Aug. 8-10, Austin, TX)
Materials Science and Engineering
Mechanical and Aerospace Engineering
Intelligent Systems Center
Article - Conference proceedings
10 Aug 2016