Critical cooling rate for the glass formation of ferromagnetic Fe40Ni40P14B6 alloy |
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Authors: | Qiang Li |
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Affiliation: | School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, PR China |
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Abstract: | Bulk ferromagnetic amorphous Fe-Ni-P-B alloys in rod shape were formed by a rapid solidification technique. The largest amorphous specimen prepared had a diameter of ∼ 2.5 mm and the corresponding cooling rate for the glass formation of this alloy system in our experiment can be estimated to be around 492.4 K/s by the method of finite-difference numerical calculation. This value is on the same order of magnitude as the critical cooling rate Rc of Fe40Ni40P14B6 alloy estimated by the method of constructing the continuous-cooling-transformation (CCT) curve. It is indicated that the heterophase impurities have been eliminated well in our experiment. |
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Keywords: | 61 43 Dq 65 50 +m 81 05 Kf 81 20 Ym |
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