Journal
SCRIPTA MATERIALIA
Volume 63, Issue 1, Pages 140-143Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.03.036
Keywords
Laser deposition; Titanium alloys; Finite element analysis; Phase transformation kinetics
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Funding
- Fundacao para a Ciencia e a Tecnologia [SFRH/BD/17570/2004]
- IMPALA [FP7-CP-TP-214380-2]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/17570/2004] Funding Source: FCT
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The overlapping of layers during part build-up in rapid manufacturing by laser powder deposition (LPD) causes consecutive thermal cycles in the previously deposited material that often lead to complex phase transformations and difficult to predict distributions of microstructure and properties. In this paper a model coupling finite element heat transfer calculations, phase transformation kinetics and microstructure property relations in Ti-6Al-4V is presented and used to obtain processing maps relating the deposition parameters to the microstructure and properties of the parts. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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