Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting

Eutectic NiAl-(Cr,Mo) composites are promising high temperature materials due to their high melting point, excellent oxidation behavior and low density. To enhance the strength, hardness and fracture toughness, high cooling rates are beneficial to obtain a fine cellular-lamellar microstructure. This...

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Autores principales: Förner, Andreas, Giese, S., Arnold, C., Felfer, P., Körner, C., Neumeier, S., Göken, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7495003/
https://www.ncbi.nlm.nih.gov/pubmed/32939021
http://dx.doi.org/10.1038/s41598-020-72093-5
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author Förner, Andreas
Giese, S.
Arnold, C.
Felfer, P.
Körner, C.
Neumeier, S.
Göken, M.
author_facet Förner, Andreas
Giese, S.
Arnold, C.
Felfer, P.
Körner, C.
Neumeier, S.
Göken, M.
author_sort Förner, Andreas
collection PubMed
description Eutectic NiAl-(Cr,Mo) composites are promising high temperature materials due to their high melting point, excellent oxidation behavior and low density. To enhance the strength, hardness and fracture toughness, high cooling rates are beneficial to obtain a fine cellular-lamellar microstructure. This can be provided by the additive process of selective electron beam melting. The very high temperature gradient achieved in this process leads to the formation of the finest microstructure that has ever been reported for NiAl-(Cr,Mo) in-situ composites. A very high hardness and fracture toughening mechanisms were observed. This represents a feasibility study towards additive manufacturing of eutectic NiAl-(Cr,Mo) in-situ composites by selective electron beam melting.
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spelling pubmed-74950032020-09-18 Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting Förner, Andreas Giese, S. Arnold, C. Felfer, P. Körner, C. Neumeier, S. Göken, M. Sci Rep Article Eutectic NiAl-(Cr,Mo) composites are promising high temperature materials due to their high melting point, excellent oxidation behavior and low density. To enhance the strength, hardness and fracture toughness, high cooling rates are beneficial to obtain a fine cellular-lamellar microstructure. This can be provided by the additive process of selective electron beam melting. The very high temperature gradient achieved in this process leads to the formation of the finest microstructure that has ever been reported for NiAl-(Cr,Mo) in-situ composites. A very high hardness and fracture toughening mechanisms were observed. This represents a feasibility study towards additive manufacturing of eutectic NiAl-(Cr,Mo) in-situ composites by selective electron beam melting. Nature Publishing Group UK 2020-09-16 /pmc/articles/PMC7495003/ /pubmed/32939021 http://dx.doi.org/10.1038/s41598-020-72093-5 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Förner, Andreas
Giese, S.
Arnold, C.
Felfer, P.
Körner, C.
Neumeier, S.
Göken, M.
Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
title Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
title_full Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
title_fullStr Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
title_full_unstemmed Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
title_short Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
title_sort nanoscaled eutectic nial-(cr,mo) composites with exceptional mechanical properties processed by electron beam melting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7495003/
https://www.ncbi.nlm.nih.gov/pubmed/32939021
http://dx.doi.org/10.1038/s41598-020-72093-5
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