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Evolution of solidification texture during additive manufacturing

Striking differences in the solidification textures of a nickel based alloy owing to changes in laser scanning pattern during additive manufacturing are examined based on theory and experimental data. Understanding and controlling texture are important because it affects mechanical and chemical prop...

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Detalles Bibliográficos
Autores principales: Wei, H. L., Mazumder, J., DebRoy, T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639736/
https://www.ncbi.nlm.nih.gov/pubmed/26553246
http://dx.doi.org/10.1038/srep16446
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author Wei, H. L.
Mazumder, J.
DebRoy, T.
author_facet Wei, H. L.
Mazumder, J.
DebRoy, T.
author_sort Wei, H. L.
collection PubMed
description Striking differences in the solidification textures of a nickel based alloy owing to changes in laser scanning pattern during additive manufacturing are examined based on theory and experimental data. Understanding and controlling texture are important because it affects mechanical and chemical properties. Solidification texture depends on the local heat flow directions and competitive grain growth in one of the six <100> preferred growth directions in face centered cubic alloys. Therefore, the heat flow directions are examined for various laser beam scanning patterns based on numerical modeling of heat transfer and fluid flow in three dimensions. Here we show that numerical modeling can not only provide a deeper understanding of the solidification growth patterns during the additive manufacturing, it also serves as a basis for customizing solidification textures which are important for properties and performance of components.
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spelling pubmed-46397362015-12-02 Evolution of solidification texture during additive manufacturing Wei, H. L. Mazumder, J. DebRoy, T. Sci Rep Article Striking differences in the solidification textures of a nickel based alloy owing to changes in laser scanning pattern during additive manufacturing are examined based on theory and experimental data. Understanding and controlling texture are important because it affects mechanical and chemical properties. Solidification texture depends on the local heat flow directions and competitive grain growth in one of the six <100> preferred growth directions in face centered cubic alloys. Therefore, the heat flow directions are examined for various laser beam scanning patterns based on numerical modeling of heat transfer and fluid flow in three dimensions. Here we show that numerical modeling can not only provide a deeper understanding of the solidification growth patterns during the additive manufacturing, it also serves as a basis for customizing solidification textures which are important for properties and performance of components. Nature Publishing Group 2015-11-10 /pmc/articles/PMC4639736/ /pubmed/26553246 http://dx.doi.org/10.1038/srep16446 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wei, H. L.
Mazumder, J.
DebRoy, T.
Evolution of solidification texture during additive manufacturing
title Evolution of solidification texture during additive manufacturing
title_full Evolution of solidification texture during additive manufacturing
title_fullStr Evolution of solidification texture during additive manufacturing
title_full_unstemmed Evolution of solidification texture during additive manufacturing
title_short Evolution of solidification texture during additive manufacturing
title_sort evolution of solidification texture during additive manufacturing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4639736/
https://www.ncbi.nlm.nih.gov/pubmed/26553246
http://dx.doi.org/10.1038/srep16446
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