Refinement of the microstructure during superplastic deformation of extruded Mg94Ni3Y1.5CeMM1.5 alloy

Pérez, Pablo, Eddahbi, Mohamed, Gonzalez Sanchez, Sergio, Garcés, Gerardo and Adeva, Paloma (2011) Refinement of the microstructure during superplastic deformation of extruded Mg94Ni3Y1.5CeMM1.5 alloy. Scripta Materialia, 64 (1). pp. 33-36. ISSN 1359 6462

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Official URL: http://dx.doi.org/10.1016/j.scriptamat.2010.08.059

Abstract

The microstructure and mechanical properties of extruded Mg94Ni3Y1.5CeMM1.5 alloy were evaluated between 250 and 400 °C. The alloy exhibited superplasticity between 300 and 400 °C. Superplastic deformation was characterized by the refinement of coarse second-phase particles and their continuous redistribution in the magnesium matrix. The equiaxed structure of the magnesium matrix in the deformed samples as well as the stress exponent close to 2 indicated that grain boundary sliding was the mechanism controlling the superplastic deformation.

Item Type: Article
Uncontrolled Keywords: Magnesium alloys; Deformation microstructure; Mechanical properties; Superplasticity; Particle refinement
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 15:58
Last Modified: 10 Mar 2016 11:36
URI: http://nrl.northumbria.ac.uk/id/eprint/24373

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