Mechanical properties of Mg–Li–Cu–Y metallic glass composites

Gonzalez Sanchez, Sergio, Louzguine-Luzgin, Dimitri, Perepezko, John and Inoue, Akihisa (2010) Mechanical properties of Mg–Li–Cu–Y metallic glass composites. Journal of Alloys and Compounds, 504 (S1). S114-S116. ISSN 0925 8388

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Official URL: http://dx.doi.org/10.1016/j.jallcom.2010.02.141

Abstract

The mechanical behaviour of Mg65−xLixCu25Y10 (x = 9, 14 and 19) metallic glass composites has been studied. For 9 and 14 at.% Li the alloys exhibit a brittle behaviour. The microstructure of the alloy containing 9 at.% Li consists of a bcc Mg-Li solid solution phase embedded in an amorphous phase. Higher concentrations of Li promote the formation of the bcc phase, Mg2Cu and also a small volume fraction of Y-containing intermetallic. The alloy with the highest Li content, i.e. 19 at.%, exhibits a compressive engineering strain of 25%. The hierarchical microstructure design with multiphase components allows for the operation and interaction of different deformation behaviour to provide for useful levels of plastic deformation.

Item Type: Article
Uncontrolled Keywords: Composite materials; Quenching; Mechanical properties
Subjects: F200 Materials Science
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Becky Skoyles
Date Deposited: 09 Nov 2015 16:20
Last Modified: 11 Mar 2016 10:26
URI: http://nrl.northumbria.ac.uk/id/eprint/24379

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