Materials Reports  2021, Vol. 35 Issue (z2): 381-384 |
| METALS AND METAL MATRIX COMPOSITES |
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| Mechanism of B Atom Promoting Formation of FCC2 Phase in High Entropy Alloy |
| HOU Lili1, GUO Qiang2, YAO Yuhong3, LIU Jiangnan3
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1 School of Materials Science and Engineering, Shaanxi Polytechnic Institute, Xianyang 712000, China
2 Western Superconducting Technologies Co., Ltd, Xi'an 710018, China
3 School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China |
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Abstract CoFeNiMnBx high entropy alloy was prepared by vacuum arc melting furnace, and its microstructure and solidification process were studied. The results show that with the increase of B content, the microstructure of the alloy changes from single FCC1 phase to FCC1 + FCC2 phase (block or strip FCC2 phase rich in B and Co and granular FCC2 phase rich in Ni). The solid solubility of B atom in the alloy and the matrix alloy is small. During the solidification process, B atom is easy to accumulate in the solid-liquid front, which changes the solidification mode of the alloy, causes partial aggregation of some elements in the alloy, and changes the solidification mode of the alloy. B atom promotes the formation of FCC2 phase.
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Published: 09 December 2021
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| About author:: Lili Hou received her doctor of engineering in materials science and engineering from the University of Xi'an Technological in December 2020, and served in Shaanxi Industrial Vocational and Technical College.She has published more than 10 journal papers as the first author.Her research interests focus on high entropy alloy,aluminum matrix composites, etc. |
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