Microstructure, Mechanical Properties, and Oxidation Behavior of AlxCr0.4CuFe0.4MnNi High Entropy Alloys

AlxCr0.4CuFe0.4MnNi (x = 0, 0.1, 0.2, 0.3, 0.4) high entropy alloys (HEAs) were prepared by copper‐mold casting. The effects of Al were investigated on the microstructure, tensile properties and oxidation behavior of these HEAs. It was shown that the addition of Al resulted in the formation of BCC a...

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Bibliographic Details
Published in:Advanced engineering materials 2017-05, Vol.19 (5), p.n/a
Main Authors: Rao, Ziyuan, Wang, Xun, Wang, Qinjia, Liu, Ting, Chen, Xiaohua, Wang, Lu, Hui, Xidong
Format: Article
Language:English
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Summary:AlxCr0.4CuFe0.4MnNi (x = 0, 0.1, 0.2, 0.3, 0.4) high entropy alloys (HEAs) were prepared by copper‐mold casting. The effects of Al were investigated on the microstructure, tensile properties and oxidation behavior of these HEAs. It was shown that the addition of Al resulted in the formation of BCC and ordered BCC phases. The compositional heterogeneity between dendrites and interdendrites was alleviated when the content of Al was small. The mechanical properties of HEAs have been remarkably improved by the addition of Al. Considering the low cost and good mechanical properties, this kind of HEAs is rather competitive among HEAs for engineering application as structural materials. In this work, it was also shown that the oxidation resistance of current HEAs was significantly improved by the addition of Al. The effects of Al are investigated on the microstructure, tensile properties, and oxidation behavior of Cr0.4CuFe0.4MnNiAlx (x = 0, 0.1, 0.2, 0.3, 0.4) high entropy alloys. The mechanical properties of HEAs are remarkably improved by the small addition of Al. The HEAs exhibit a significant enhanced oxidation resistance after the addition of Al.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201600726