Al85Ni9Ta6, a refractory Al-rich ternary alloy glass and its crystallization kinetics

E. Fazakas, K. Russew, L. Stojanova, A. Csanady, L. K. Varga

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Abstract

There are no reported Al-rich alloys that are both easy glass formers upon melt-spinning processing without RE additions and have a crystallization temperature sufficiently high to ensure long metastable life times at room temperature. A representative of a new family of ternary Al-based glasses is described here that contains Ni and Ta with total additive element concentration as low as 15 at % and its devitrification characteristics are reported. Using the melt-spinning technique under protective atmosphere, the alloy Al 85Ni9Ta6 easily forms a ductile glass, with the crystallization onset temperature Tx 370°C, enthalpy of transformation ΔH 68 J/g and an activation energy of crystallization Ea 266.83 kJ/mole, i.e., 2.76 eV.

Original languageEnglish
Article number012100
JournalJournal of Physics: Conference Series
Volume144
DOIs
Publication statusPublished - 2009

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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