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Progress in Additive Manufacturing
Published in: Progress in Additive Manufacturing 1-2/2018

23-01-2018 | Full Research Article

Numerical modeling and experimental validation of thermal history and microstructure for additive manufacturing of an Inconel 718 product

Authors: Patcharapit Promoppatum, Shi-Chune Yao, P. Chris Pistorius, Anthony D. Rollett, Peter J. Coutts, Frederick Lia, Richard Martukanitz

Published in: Progress in Additive Manufacturing | Issue 1-2/2018

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Abstract

A product-scale part was additively manufactured from Inconel 718 by laser powder-bed fusion. The thermal and microstructural behavior was experimentally examined to reveal physical characteristics while a high fidelity numerical model was developed to predict characteristics throughout the part volume. Three physical characteristics were considered in the present study: (1) thermal evolution during the build, (2) melt pool configuration, and (3) the final microstructure as-deposited. Thermal simulations were performed by finite element calculation while the microstructure was predicted from the calculated thermal history and existing theoretical correlations. Predicted results were thoroughly confirmed through comparison with experimental measurements. Ultimately, the present work aims to illustrate the integration of the computational method as tools to provide manufacturing qualification for part production by AM.
previous article Comparison of virgin and reused 15-5 PH stainless steel powders for laser powder bed fusion process
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Metadata
Title
Numerical modeling and experimental validation of thermal history and microstructure for additive manufacturing of an Inconel 718 product
Authors
Patcharapit Promoppatum
Shi-Chune Yao
P. Chris Pistorius
Anthony D. Rollett
Peter J. Coutts
Frederick Lia
Richard Martukanitz
Publication date
23-01-2018
Publisher
Springer International Publishing
Published in
Progress in Additive Manufacturing / Issue 1-2/2018
Print ISSN: 2363-9512
Electronic ISSN: 2363-9520
DOI
https://doi.org/10.1007/s40964-018-0039-1

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