Room temperature ageing of Al–Ni–RE (RE = La, Gd, Er) metallic glasses

Sahu, Rina and Gangopadhyay, A K and Kelton, K F and Chatterjee, S and Sahoo, K L (2009) Room temperature ageing of Al–Ni–RE (RE = La, Gd, Er) metallic glasses. Scripta Materialia, 61 (6). pp. 588-591.



The effect of long-term ageing of Al–TM–RE (TM = Ni, Ag, Cu; RE = rare earth) amorphous alloys under ambient conditions, and at a slightly elevated temperature (100 °C), has been studied. The phase evolution and devitrification kinetics were studied using differential scanning calorimetry, X-ray diffraction and transmission electron microscopy techniques. Partial crystallization was observed in Al89Ni6La5, Al87Ni6La7, Al87Ni5(Ag/Cu)1La7 alloys after several years under ambient conditions (20–50 °C), and in Al88Ni4La8, Al88Ni4Gd2Er6 and Al88Ni4Er8 alloys following a 90 h anneal at 100 °C.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:Al–Ni–RE amorphous alloys; Room temperature ageing; Activation energy; Differential scanning calorimetry
Divisions:Metal Extraction and Forming
ID Code:19
Deposited By:Dr. A K Sahu
Deposited On:22 Sep 2009 13:05
Last Modified:08 Feb 2012 17:19
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