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

Zhongsheng Yang; Zhijun Wang; Qingfeng Wu; Tao Zheng; Purui Zhao; Jinkai Zhao; Jiayin Chen

doi:10.1007/s00339-019-2506-z

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

Zhongsheng Yang, Zhijun Wang, Qingfeng Wu, Tao Zheng, Purui Zhao, Jinkai Zhao, Jiayin Chen

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

70 Scopus citations

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 Co₃₀Cr₁₀Fe₁₀Al₁₈Ni_{32 − x}Mo_x (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%.

Original language	English
Article number	208
Journal	Applied Physics A: Materials Science and Processing
Volume	125
Issue number	3
DOIs	https://doi.org/10.1007/s00339-019-2506-z
State	Published - 1 Mar 2019

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title = "Enhancing the mechanical properties of casting eutectic high entropy alloys with Mo addition",

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%.",

author = "Zhongsheng Yang and Zhijun Wang and Qingfeng Wu and Tao Zheng and Purui Zhao and Jinkai Zhao and Jiayin Chen",

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AU - Yang, Zhongsheng

AU - Wang, Zhijun

AU - Wu, Qingfeng

AU - Zheng, Tao

AU - Zhao, Purui

AU - Zhao, Jinkai

AU - Chen, Jiayin

PY - 2019/3/1

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N2 - 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%.

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

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