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

S. González; D. V. Louzguine-Luzgin; J. H. Perepezko; A. Inoue

doi:10.1016/j.jallcom.2010.02.141

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

S. González, D. V. Louzguine-Luzgin, J. H. Perepezko, A. Inoue

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The mechanical behaviour of Mg_65-xLi_xCu ₂₅Y₁₀ (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.

Original language	English
Pages (from-to)	S114-S116
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jallcom.2010.02.141
Publication status	Published - 2010 Aug

Keywords

Composite materials
Mechanical properties
Quenching

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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abstract = "The mechanical behaviour of Mg65-xLixCu 25Y10 (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.",

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AU - Perepezko, J. H.

AU - Inoue, A.

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