Bulk ultrafine and nanostructured materials from consolidation of particles by back pressure equal channel angular pressing

Xia, K, Xu, Wei, Wu, X and Goussous, S 2008, Bulk ultrafine and nanostructured materials from consolidation of particles by back pressure equal channel angular pressing, in Proceedings of the 4th Nanomaterials by Sever Plastic Deformation 2008 International Conference, Trans Tech Publications, Zurich, Switzerland, pp. 119-126.

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Title Bulk ultrafine and nanostructured materials from consolidation of particles by back pressure equal channel angular pressing
Author(s) Xia, K
Xu, WeiORCID iD for Xu, Wei orcid.org/0000-0002-7048-7972
Wu, X
Goussous, S
Conference name Nanomaterials by Severe Plastic Deformation. Conference (2008 : Goslar, Germany)
Conference location Goslar, Germany
Conference dates 2008/08/18 - 2008/08/22
Title of proceedings Proceedings of the 4th Nanomaterials by Sever Plastic Deformation 2008 International Conference
Editor(s) Estin,, Y
Maier, HJ
Publication date 2008
Series Materials Science Forum
Start page 119
End page 126
Total pages 7
Publisher Trans Tech Publications
Place of publication Zurich, Switzerland
Keyword(s) Science & Technology
Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Materials Science, Characterization & Testing
Science & Technology - Other Topics
Materials Science
SEVERE PLASTIC-DEFORMATION
NANOCRYSTALLINE MATERIALS
MATRIX COMPOSITES
POWDER
ALLOY
EXTRUSION
ALUMINUM
TORSION
MICROSTRUCTURE
NANOCOMPOSITES
Summary Severe plastic deformation (SPD) has received considerable attention for its capability to produce ultrafine and nano structured materials. On the one hand, SPD, especially in the forms of equal channel angular pressing (ECAP) and high pressure torsion (HPT) is able to refine bulk materials with coarse grain structures. On the other hand, SPD has been used to synthesise bulk materials from particles. It enables particles from nano to micro scales to be consolidated into fully dense materials at much lower temperatures and shorter times, compared to the conventional sintering processing. It is particularly relevant to consolidating particles with non-equilibrium micro structures and to producing complex multiphase alloys. In this summary, ECAP as an effective process to synthesise a range of light metal based materials from particles with various sizes and structures, including aluminium and aluminium composites, titanium and magnesium, will be demonstrated. Full density and good bonding are achieved easily with the application of a back pressure. Microstructures from nano to ultrafine scales have been produced, resulting in significantly enhanced strength. Simultaneous increase in ductility has also been achieved in some alloys by virtue of multi-scale structures. © 2008 Trans Tech Publications.
ISBN 9780878493753
ISSN 0255-5476
Indigenous content off
HERDC Research category E1.1 Full written paper - refereed
Persistent URL http://hdl.handle.net/10536/DRO/DU:30125695

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