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Polymorphic Transformation and Magnetic Properties of Rapidly Solidified Fe26.7Co26.7Ni26.7Si8.9B11.0 High-Entropy Alloys

1
School of Mechanical, Electrical & Information Engineering, Shandong University (Weihai), Weihai 264209, China
2
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
3
College of Marine Science, Shandong University (Weihai), Weihai 264209, China
4
Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, A-8700 Leoben, Austria
5
Department Materials Physics, Montanuniversität Leoben, A-8700 Leoben, Austria
*
Author to whom correspondence should be addressed.
Materials 2019, 12(4), 590; https://doi.org/10.3390/ma12040590
Received: 31 December 2018 / Revised: 12 February 2019 / Accepted: 13 February 2019 / Published: 15 February 2019
In this work, the microstructural evolution and magnetic performance of the melt-spun amorphous and amorphous-crystalline Fe26.7Co26.7Ni26.7Si8.9B11.0 high-entropy alloys (HEAs) during crystallization were investigated, respectively. Upon heating fully amorphous ribbons, a metastable BCC supersaturated solid solution together with a little Ni31Si12 crystals first precipitated and then the (Fe,Co)2B crystals formed until the full crystallization was achieved. With further increasing temperature after full crystallization, a polymorphic transformation from a metastable BCC phase to two types of FCC solid solutions occurred. For the amorphous-crystalline HEAs, the dominant crystallization products were the metastable FCC but not BCC crystals. During crystallization, the primary metastable FCC crystals first transform into the metastable BCC crystals and then the newly-generated BCC phase transforms into two types of FCC phases with further increasing temperature. This temperature dependence of the gradual polymorphic transformation results in the change of magnetic properties of the present high-entropy amorphous alloys. View Full-Text
Keywords: amorphous alloys; high-entropy alloys; polymorphic transformation; magnetic properties amorphous alloys; high-entropy alloys; polymorphic transformation; magnetic properties
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MDPI and ACS Style

Zhang, Z.; Song, K.; Li, R.; Xue, Q.; Wu, S.; Yan, D.; Li, X.; Song, B.; Sarac, B.; Kim, J.T.; Ramasamy, P.; Wang, L.; Eckert, J. Polymorphic Transformation and Magnetic Properties of Rapidly Solidified Fe26.7Co26.7Ni26.7Si8.9B11.0 High-Entropy Alloys. Materials 2019, 12, 590. https://doi.org/10.3390/ma12040590

AMA Style

Zhang Z, Song K, Li R, Xue Q, Wu S, Yan D, Li X, Song B, Sarac B, Kim JT, Ramasamy P, Wang L, Eckert J. Polymorphic Transformation and Magnetic Properties of Rapidly Solidified Fe26.7Co26.7Ni26.7Si8.9B11.0 High-Entropy Alloys. Materials. 2019; 12(4):590. https://doi.org/10.3390/ma12040590

Chicago/Turabian Style

Zhang, Zequn; Song, Kaikai; Li, Ran; Xue, Qisen; Wu, Shuang; Yan, Delong; Li, Xuelian; Song, Bo; Sarac, Baran; Kim, Jeong T.; Ramasamy, Parthiban; Wang, Li; Eckert, Jürgen. 2019. "Polymorphic Transformation and Magnetic Properties of Rapidly Solidified Fe26.7Co26.7Ni26.7Si8.9B11.0 High-Entropy Alloys" Materials 12, no. 4: 590. https://doi.org/10.3390/ma12040590

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