Enhancing the mechanical properties of casting eutectic high entropy alloys with Mo addition

Published on Feb 23, 2019in Applied Physics A1.81
· DOI :10.1007/S00339-019-2506-Z
Zhongsheng Yang3
Estimated H-index: 3
(NPU: Northwestern Polytechnical University),
Zhijun Wang29
Estimated H-index: 29
(NPU: Northwestern Polytechnical University)
+ 4 AuthorsJiayin Chen1
Estimated H-index: 1
(NPU: Northwestern Polytechnical University)
Sources
Abstract
Eutectic high entropy alloys (EHEAs) exhibit excellent mechanical properties in the as-cast condition. In this paper, Mo element was chosen to further strengthen the EHEAs by solid solution strengthening. The microstructures, phase compositions and mechanical properties of Co30Cr10Fe10Al18Ni32 − xMox (x = 0, 1, 2, 3) alloys were investigated. It was found that Mo acts as a solid solution strengthening element in the face-centered cubic (FCC) and body-centered cubic (BCC) phases. Meanwhile, Mo can promote the formation of the primary BCC phase. Among all alloys, the alloy with Mo (x = 2) has the highest fracture tensile strength of 1250 MPa and the acceptable elongation of 14%.
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Single-phase High Entropy Alloys are of great interest to researchers due to their properties like high oxidation resistance, thermal stability, and corrosion resistance. Moreover, single-phase in ...
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