Large plasticity of a Mg42Li23Cu25Y10 multiphase composite

Gonzalez Sanchez, Sergio, Louzguine-Luzgin, Dimitri, Perepezko, John and Inoue, Akihisa (2011) Large plasticity of a Mg42Li23Cu25Y10 multiphase composite. Materials Science and Engineering: A, 528 (16-17). pp. 5576-5584. ISSN 0921 5093

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Official URL: http://dx.doi.org/10.1016/j.msea.2011.03.093

Abstract

A novel Mg42Li23Cu25Y10 nanostructure-bcc ductile phase composite containing a Mg2Cu phase and amorphous zones has been obtained by injection casting. This alloy exhibits a large plastic engineering strain of 83% and plastic true strain of 177% with a flow stress at 4.3% deformation of 425 MPa. During compression, the deformation of the nanometer size bcc particles occurs by grain boundary sliding accommodated by flow controlled by grain boundary diffusion at room temperature. The hierarchical multiphase microstructure design allows for the operation and interaction of different shear deformation bands to provide large plastic strain at high strength.

Item Type: Article
Uncontrolled Keywords: Magnesium alloys; Mechanical characterization; Plasticity
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 15:01
Last Modified: 11 Mar 2016 10:21
URI: http://nrl.northumbria.ac.uk/id/eprint/24369

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