Journal
INTERMETALLICS
Volume 123, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2020.106834
Keywords
Co/Fe based bulk metallic glasses; Glass forming ability; Thermal stability; Activation energy of nucleation; Magnetic properties; Mechanical properties
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Funding
- National Natural Science Foundation of China [51771161, 51561028]
- Graduate Innovation Program of Xinjiang Uyghur Autonomous Region [XJ2019G047]
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A new series of Co71-xFexMo9P14B6 (x = 0, 18, 35.5, 53 and 71 at. %) bulk metallic glasses (BMGs) have been prepared by combining fluxing treatment and J-quenching technique. The critical diameter for fully glass formation (Dmax) of the present CoFeMoPB BMGs shows a complicated change with composition, and reaches the largest value of 4.5 mm for the Fe-free alloy. The present CoFeMoPB BMGs exhibit good soft magnetic properties with the saturation magnetization of 0.18-0.71 T. The compression test shows that the present CoFeMoPB BMGs show relatively high fracture strength of 2.77-2.96 GPa, and the Co-rich BMGs (x = 0-35.5) show poor compressive plasticity while the Fe-rich BMGs (x = 53-71) exhibit significant plasticity up to 9.8% and 15.4%.
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