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Structural and Phase Evolution upon Annealing of Fe76Si9−xB10P5Mox (x = 0, 1, 2 and 3) Alloys
Metals ( IF 2.9 ) Pub Date : 2020-07-02 , DOI: 10.3390/met10070881
Darling Perea , Carolina Parra , Parthiban Ramasamy , Mihai Stoica , Jürgen Eckert , Francisco Bolívar , Félix Echeverría

Alloying elements play an important role in adjusting the magnetic and thermal properties of Fe-based amorphous alloys. In this work, the effect of Mo addition on the thermal stability, structural evolution, and magnetic properties of Fe76Si9B10P5 metallic glass was studied. The study revealed that the substitution of a small amount of Mo (1 at.%) for Si enhances the glass-forming ability (GFA) but reduces the thermal stability of the alloy, causing a reduction of the supercooled liquid region. Substitution of up to 3 at.% Mo for Si lowers the Curie temperature from 677 to 550 K and the saturation magnetization drops from 160 to 138 Am2/kg. The structural evolution was evaluated by annealing the glassy samples at different temperatures, revealing that the crystallization proceeds in multiple steps, beginning with the formation of different iron borides (FeB, Fe2B, FeB2 and Fe23B6) followed by transformation to a mixture of more stable phases.

中文翻译:

Fe76Si9-xB10P5Mox(x = 0、1、2和3)合金退火后的结构和相变

合金元素在调节铁基非晶合金的磁性能和热性能方面起着重要作用。在这项工作中,研究了添加钼对Fe 76 Si 9 B 10 P 5金属玻璃的热稳定性,结构演变和磁性能的影响。研究表明,少量Mo(1 at。%)替代Si可以增强玻璃形成能力(GFA),但会降低合金的热稳定性,从而导致过冷液体区域的减少。硅最多置换3 at。%Mo会使居里温度从677降低到550 K,饱和磁化强度从160 Am下降到138 Am 2/公斤。通过在不同温度下对玻璃样进行退火来评估结构演变,结果表明,结晶过程分多个步骤进行,首先是形成不同的硼化铁(FeB,Fe 2 B,FeB 2和Fe 23 B 6),然后转变为更稳定的相的混合物。
更新日期:2020-07-02
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