Crystallization Behavior of Al87Ni5La7Zr1 Metallic Glass

Abstract:

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Nano-crystalline-amorphous Al based alloys with minor additions of rare earth elements and transition metals are of technical interest, because of their extraordinary high mechanical strength. This strengthening effect depends strongly on the alloy composition and the pathway of crystallisation. The crystallisation behaviour of Al87Ni6La7 and of Al87Ni5La7Zr metallic glass was studied with complementary methods such as XRD, TEM and 3D-AP. The amorphous matrix of the Zr-containing glass shows fluctuations of all minor elements on the nanometer scale. It is suggested, that these fluctuations act as nucleation zones for the crystallization of the glass during annealing.

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran

Pages:

1917-1920

DOI:

10.4028/www.scientific.net/MSF.539-543.1917

Citation:

N. Wanderka et al., "Crystallization Behavior of Al87Ni5La7Zr1 Metallic Glass", Materials Science Forum, Vols. 539-543, pp. 1917-1920, 2007

Online since:

March 2007

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$35.00

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