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Effect of Fe Addition on Heat-Resistant Aluminum Alloys Produced by Selective Laser Melting

1
Faculty of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
2
Powder & Paste Headquarters, Toyo Aluminium K. K., Osaka 541-0056, Japan
3
KOIWAI Co., Ltd., Odawara 256-0804, Japan
*
Author to whom correspondence should be addressed.
Metals 2019, 9(4), 468; https://doi.org/10.3390/met9040468
Received: 26 March 2019 / Revised: 13 April 2019 / Accepted: 20 April 2019 / Published: 22 April 2019
(This article belongs to the Special Issue Additive Manufacturing of Metals)
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Abstract

The effect of Fe addition on the high-temperature mechanical properties of heat-resistant aluminum alloys produced by selective laser melting (SLM) was investigated in relation to the alloy microstructures. Fe is generally detrimental to the properties of cast aluminum alloys; however, we found that Fe-containing alloys produced by SLM had improved high-temperature strength and good ductility. Microstructural observations revealed that the increase in the high-temperature strength of the alloys was due to the dispersion of fine rod-shaped Fe-Si-Ni particles unique to the SLM material instead of the cell-like structure of eutectic Si. View Full-Text
Keywords: aluminum alloys; selective laser melting; high-temperature deformation; microstructure aluminum alloys; selective laser melting; high-temperature deformation; microstructure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Yamasaki, S.; Okuhira, T.; Mitsuhara, M.; Nakashima, H.; Kusui, J.; Adachi, M. Effect of Fe Addition on Heat-Resistant Aluminum Alloys Produced by Selective Laser Melting. Metals 2019, 9, 468.

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