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Journal of Materials Engineering and Performance
Published in: Journal of Materials Engineering and Performance 1/2018

18-12-2017

Effects of Tungsten Addition on the Microstructure and Mechanical Properties of Near-Eutectic AlCoCrFeNi2 High-Entropy Alloy

Authors: Yong Dong, Yiping Lu

Published in: Journal of Materials Engineering and Performance | Issue 1/2018

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Abstract

The effects of tungsten addition on the microstructure and mechanical properties of near-eutectic AlCoCrFeNi2 high-entropy alloy were investigated in this paper. The AlCoCrFeNi2W x alloys comprised the primary BCC phase plus eutectic FCC/BCC phases. It was found that W element can both promote the formation of the primary BCC phase and act as a solid solution strengthening element. The hardness of the AlCoCrFeNi2W x alloys increased from HV 293 to HV 356.2 with the increase in W content. The addition of W element improved the strength of alloys but reduced ductility. Thereinto, the AlCoCrFeNi2W0.2 alloy showed the most excellent compressive properties with the fracture strength of 2785.9 MPa and the plastic strain of 0.42, respectively, which implied the potential industrial application values.
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Metadata
Title
Effects of Tungsten Addition on the Microstructure and Mechanical Properties of Near-Eutectic AlCoCrFeNi2 High-Entropy Alloy
Authors
Yong Dong
Yiping Lu
Publication date
18-12-2017
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 1/2018
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-017-3096-6

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