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于万秋,卢利平,左斌,华中.热处理条件对FeZrB基非晶合金微观结构及磁性能的影响[J].稀有金属材料与工程(英文),2020,49(5):1561~1566.[Wanqiu Yu,Liping Lu,Buo Bin and Zhong Hua.Primary crystallization phase produced during crystallization and magnetic property of FeZrB alloys[J].Rare Metal Materials and Engineering,2020,49(5):1561~1566.]
Primary crystallization phase produced during crystallization and magnetic property of FeZrB alloys
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Received:January 02, 2019  Revised:April 08, 2019
Key words: FeZrB alloys  primary crystallization phases  microstructure  saturation magnetization  coercivity
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Wanqiu Yu,Liping Lu,Buo Bin and Zhong Hua  
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      A series of FeZrB alloys with different nominal compositions were prepared by melt-spinning and then annealed at their first crystallization temperatures, respectively. The thermal curve, microstructure and magnetic property of alloys were investigated by simultaneous thermal analyzer (STA), X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The results show that the primary crystallization phases are different with the compositions of FeZrB alloys changing. Four groups of primary crystallization phases can be observed in the alloys, i.e. α-Fe phase, α-Fe+Fe23B6-type phases, α-Fe+α-Mn type phases and α-Fe+Fe2B+ZrB phases, and their morphologies are of different by TEM. The relations of saturation magnetization (Ms) and coercivity (Hc) for the alloys with different primary crystallization phases are as follows: Ms(α-Fe)>Ms(α-Fe+α-Mn type)>Ms(α-Fe+Fe2B+ZrB)>Ms(α-Fe+Fe23B6-type) and Hc (α-Fe+α-Mn type)>Hc(α-Fe+Fe2B+ZrB)>Hc(α-Fe+Fe23B6-type)>Hc(α-Fe).