| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Formability and Thermal Stability of Ce62Al15Fe8Co15 Bulk Metallic Glass |
| WANG Zhi-Xin, LU Jin-Bin, YANG Wei-Tie |
| Department of Materials and Chemical Engineering, Zhongyuan Institute of Technology, Zhengzhou 450007 |
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| Cite this article: |
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WANG Zhi-Xin, LU Jin-Bin, YANG Wei-Tie 2010 Chin. Phys. Lett. 27 026105 |
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Abstract The formability and thermal stability of Ce62Al15Fe8Co15 bulk metallic glass (BMG) are studied by x-ray diffraction (XRD) and differential scanning calorimetry. The critical diameter of Ce62Al15Fe8Co15 BMG predicted by the parameter γ is about 3.1 mm, which is roughly in agreement with the XRD results. Stability of the BMG is investigated by means of continuous crystallization diagrams obtained from the extension of the Kissinger and Vogel-Fulcher-Tammann (VFT) equations comparatively. It is found that the dependence of crystallization temperature of the BMG on heating rates follows a nonlinear relationship rather than Kissinger and Lasoka's linear fittings. The thermal stability of the BMG is investigated by the VFT equation.
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| Keywords:
61.43.Dq
64.70.Kb
65.60.+a
81.05.Kf
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Received: 12 May 2009
Published: 08 February 2010
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| PACS: |
61.43.Dq
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(Amorphous semiconductors, metals, and alloys)
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64.70.Kb
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65.60.+a
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(Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.)
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81.05.Kf
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(Glasses (including metallic glasses))
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