Title

Simulation of Cooling Rate Effects on Ti-48Al-2Cr-2Nb Crack Formation in Direct Laser Deposition

Abstract

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.

Meeting Name

27th Annual International Solid Freeform Fabrication Symposium (2016: Aug. 8-10, Austin, TX)

Department(s)

Materials Science and Engineering

Second Department

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

1053-2153

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 University of Texas at Austin -- Laboratory for Freeform Fabrication (LFF), All rights reserved.

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