Thermal stability of amorphous Mg50Ni50 alloy produced by mechanical alloying

D. Guzmán, S. Ordoñez, D. Serafini, P. A. Rojas, C. Aguilar, M. Santander

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Amorphous Mg50Ni50alloy was produced by mechanical alloying (MA) of the elemental powders Mg and Ni using a SPEX 8000D mill. The alloyed powders were microstructurally characterized by X-ray diffraction (XRD). The thermal transformation of amorphous Mg50Ni50into stable intermetallics (Mg50Ni50→ remaining amorphous + Mg2Ni → Mg2Ni + MgNi2) was analyzed using the Kissinger and isoconversional methods based on the non-isothermal differential scanning calorimetry (DSC) experiments. The apparent activation energies (Ea) and the transformation diagrams, temperature-time-transformation (T-T-T) and temperature-heating rate-transformation (T-HR-T), were obtained for both processes. A good agreement was observed between the calculated transformation curves and the experimental data, which verifies the reliability of the method utilized. © 2009 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)120-123
Number of pages4
JournalJournal of Non-Crystalline Solids
Publication statusPublished - 15 Jan 2010
Externally publishedYes

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