Grain refinement and mechanical behaviour of a magnesium alloy processed by ECAP
Grain refinement and mechanical behaviour of a magnesium alloy processed by ECAP
Equal-channel angular pressing (ECAP) is an effective tool for refining the grain structure of magnesium alloys and improving the ductility at moderate temperatures. However, grain refinement in these alloys differs from other metals because new grains are formed along the boundaries of the initial structure and these newly formed grains slowly spread to consume the interiors of the larger grains in subsequent passes. A model is presented for grain refinement in magnesium alloys processed by ECAP based on the principles of dynamic recrystallization where new fine grains are formed along the initial boundaries and along twin boundaries. This model provides an explanation for a wide range of experimental data and introduces the concept of grain size engineering for achieving selected material properties in magnesium alloys.
4827-4836
Figueiredo, Robert B.
42910636-83bb-4554-9426-eb27524132c8
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
September 2010
Figueiredo, Robert B.
42910636-83bb-4554-9426-eb27524132c8
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Robert B. and Langdon, Terence G.
(2010)
Grain refinement and mechanical behaviour of a magnesium alloy processed by ECAP.
Journal of Materials Science, 45 (17), .
(doi:10.1007/s10853-010-4589-y).
Abstract
Equal-channel angular pressing (ECAP) is an effective tool for refining the grain structure of magnesium alloys and improving the ductility at moderate temperatures. However, grain refinement in these alloys differs from other metals because new grains are formed along the boundaries of the initial structure and these newly formed grains slowly spread to consume the interiors of the larger grains in subsequent passes. A model is presented for grain refinement in magnesium alloys processed by ECAP based on the principles of dynamic recrystallization where new fine grains are formed along the initial boundaries and along twin boundaries. This model provides an explanation for a wide range of experimental data and introduces the concept of grain size engineering for achieving selected material properties in magnesium alloys.
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Published date: September 2010
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 170721
URI: http://eprints.soton.ac.uk/id/eprint/170721
ISSN: 0022-2461
PURE UUID: 524b0ae6-32f2-4b0e-aea3-1ce1454b4051
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Date deposited: 10 Jan 2011 11:55
Last modified: 14 Mar 2024 02:47
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Author:
Robert B. Figueiredo
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