Evaluating the flow properties of ultrafine-grained materials
Evaluating the flow properties of ultrafine-grained materials
Processing through the application of severe plastic deformation (SPD) provides an opportunity for achieving significant grain refinement, typically to the submicrometer or even the nanometer level. If these small grains are reasonably stable at elevated temperatures, it is possible to achieve excellent superplastic capabilities at very rapid strain rates. Recent developments on the flow properties of ultrafine-grained materials are examined and it is shown that the flow mechanisms can be readily depicted using deformation mechanism maps. Examples of maps are presented for materials processed by SPD techniques.
deformation mechanism maps, flow processes, rate-controlling mechanisms, ultrafine grains
3-9
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
November 2014
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Abstract
Processing through the application of severe plastic deformation (SPD) provides an opportunity for achieving significant grain refinement, typically to the submicrometer or even the nanometer level. If these small grains are reasonably stable at elevated temperatures, it is possible to achieve excellent superplastic capabilities at very rapid strain rates. Recent developments on the flow properties of ultrafine-grained materials are examined and it is shown that the flow mechanisms can be readily depicted using deformation mechanism maps. Examples of maps are presented for materials processed by SPD techniques.
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Published date: November 2014
Keywords:
deformation mechanism maps, flow processes, rate-controlling mechanisms, ultrafine grains
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 361077
URI: http://eprints.soton.ac.uk/id/eprint/361077
PURE UUID: 2175f86d-2c5e-43b1-b757-782e39d84602
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Date deposited: 14 Jan 2014 16:55
Last modified: 15 Mar 2024 03:13
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Author:
Megumi Kawasaki
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