Sahoo, K L and Panda, A K and Das, S and Rao, Venkatesh (2004) Crystallization study of amorphous Al87.5Ni7Mm5Fe0.5 alloy by electrical resistivity measurement. Materials Letters, 58 (3-4). pp. 316-320.
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Abstract
Electrical resistivity measurement has been used to study the crystallization in amorphous Al87.5Ni7Mm5Fe0.5 alloy. Differential scanning calorimetry (DSC) and resistivity measurement showed that the alloy undergoes a three-stage crystallization process compared to the two-stage crystallization behaviour in many metallic glasses. The first and second peaks around 425 and 609 K, respectively, correspond to the precipitation of fcc-Al and Al11(La,Ce)3 phases. The activation energy for the formation of Al11(La,Ce)3 phase has been found to be 153±5.3 kJ/mol. The Avrami exponent is in the range of 1.50–1.76 indicating a three-dimensional growth mechanism with a decreasing nucleation rate.
| Item Type: | Article |
|---|---|
| Official URL/DOI: | http://dx.doi.org/10.1016/S0167-577X(03)00477-4 |
| Uncontrolled Keywords: | Aluminium-based amorphous alloy; Melt spinning; Misch metal; Electrical resistivity; Crystallization behaviour |
| Divisions: | Metal Extraction and Forming |
| ID Code: | 561 |
| Deposited By: | INVALID USER |
| Deposited On: | 18 May 2010 12:08 |
| Last Modified: | 08 Feb 2012 17:03 |
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