Hydrogen Storage, Microstructure and Mechanical Properties of Strained Mg65Ni20Cu5Y10 Metallic Glass

Abstract:

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Melt-spun amorphous Mg65Ni20Cu5Y10 metallic glass compacts were subjected to severe shear deformation by high-pressure torsion. High-resolution X-ray diffraction analysis and scanning electron microscopy revealed that high-pressure torsion resulted in a deformation dependent microstructure. Nanoindentation measurements indicated that the heavy shear deformation yields an increase in hardness. High-pressure calorimetry measurements revealed that hydrogen uptake in the fully amorphous alloy occurs at a significantly lower temperature compared to the fully crystallized state, while the amount of absorbed hydrogen increased considerably after shear strain due to the formation of Mg2Ni crystals.

Info:

Periodical:

Edited by:

T. Berecz, K. Májlinger, I. N. Orbulov and P. J. Szabó

Pages:

74-79

DOI:

10.4028/www.scientific.net/MSF.729.74

Citation:

Á. Révész et al., "Hydrogen Storage, Microstructure and Mechanical Properties of Strained Mg65Ni20Cu5Y10 Metallic Glass", Materials Science Forum, Vol. 729, pp. 74-79, 2013

Online since:

November 2012

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$35.00

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