Microstructure and Interface Of Mg3Zn6Y Quasicrystal Particulate Reinforced Mg-8Gd-3Y Alloy

Abstract:

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Mg3Zn6Y quasicrystal particulate reinforced Mg-8Gd-3Y alloy was fabricated by adding the Mg3Zn6Y quasicrystal particles into the Mg-8Gd-3Y matrix alloy melt. The effect of volume fraction of quasicrystal particles on the microstructure of quasicrystal particulate reinforced Mg-8Gd-Y alloy was studied using XRD, SEM, TEM and HRTEM. It was found that Mg3Zn6Y quasicrystal particles were melted partly and only 1/3 of them were added into the matrix alloy. The quasicrystal particles distributed in the grain and grain boundary. At the same time, the intermetallic phase composition and the morphology in Mg-8Gd-3Y matrix alloy were changed. The interface between quasicrystal particles and α-Mg was smooth and clear, they combined closely each other and there is no obvious interface chemical reaction when the direction of electron beam was parallel to the 2-fold and 3-fold axes of icosahedral quasicrystal phase particles.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

2704-2707

DOI:

10.4028/www.scientific.net/MSF.654-656.2704

Citation:

S. P. Wu et al., "Microstructure and Interface Of Mg3Zn6Y Quasicrystal Particulate Reinforced Mg-8Gd-3Y Alloy", Materials Science Forum, Vols. 654-656, pp. 2704-2707, 2010

Online since:

June 2010

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$35.00

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