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

被引：13

作者：

Zhang, Zequn ^{[1
]}

Song, Kaikai ^{[1
]}

Li, Ran ^{[2
]}

Xue, Qisen ^{[1
]}

Wu, Shuang ^{[1
]}

Yan, Delong ^{[1
]}

Li, Xuelian ^{[1
]}

Song, Bo ^{[3
]}

Sarac, Baran ^{[4
]}

Kim, Jeong Tae ^{[4
]}

Ramasamy, Parthiban ^{[4
]}

Wang, Li ^{[1
]}

Eckert, Juergen ^{[4
,5
]}

机构：

[1] Shandong Univ Weihai, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China

[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[3] Shandong Univ Weihai, Coll Marine Sci, Weihai 264209, Peoples R China

[4] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria

[5] Univ Leoben, Dept Mat Phys, A-8700 Leoben, Austria

来源：

MATERIALS | 2019年 / 12卷 / 04期

基金：

欧洲研究理事会; 中国国家自然科学基金;

关键词：

amorphous alloys; high-entropy alloys; polymorphic transformation; magnetic properties; GLASS-FORMING ABILITY; BULK METALLIC-GLASS; B2; CUZR; FE; CRYSTALLIZATION; CO; PHASE; BCC; KINETICS; DESIGN;

D O I：

10.3390/ma12040590

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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)(2)B 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.

引用

页数：14

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