Microstructural evolution and magnetic property of rapidly solidified Co62Mo38 hypereutectic alloy
Microstructural evolution and magnetic property of rapidly solidified Co62Mo38 hypereutectic alloy
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快凝Co62Mo38过共晶合金的显微组织演变及磁性能
DOI:
10.1016/j.matlet.2021.129574
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发表时间:
2021-05
影响因子:
3
通讯作者:
B. Wei
中科院分区:
文献类型:
--
作者:
S. Sha;J. Chang;S.S. Xu;P.X. Yan;B. Wei
To investigate the microstructural dependence of magnetic property for hypereutectic Co62Mo38alloy, it was sufficiently undercooled by electromagnetic levitation (EML) and drop tube (DT) techniques. The maximum liquid undercoolings attained as 232 K (0.13TL) at levitated state and 313 K (0.18TL) under microgravity condition, respectively. At small undercoolings, the final microstructure consisted of lath-shaped primary ε-Co7Mo6dendrites and interdendritic (α-Co + ε-Co7Mo6) eutectics. As the undercooling increased, the volume fraction of α-Co phase decreased continuously, leading to a reduction in saturation magnetization. Meanwhile, the coercive force exhibited a downward trend due to the coarsening of α-Co grain. Once the undercooling exceeded 271 K, the equiaxed growth of ε-Co7Mo6compound was induced. In this case, the value of saturation magnetization abruptly increased with the increase of alloy undercooling, whereas the coercive force was further reduced.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1063/1.4986119
发表时间:
2017-10
期刊:
Appl. Phys. Lett.
影响因子:
--
作者:
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通讯作者:
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