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Development of microstructure and properties during the multiple extrusion and consolidation of Al-4Mg-1Zr
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Garcia, Daniel Aguilar, Dye, David, Jackson, Martin, Grimes, Roger and Dashwood, R. J.. (2010) Development of microstructure and properties during the multiple extrusion and consolidation of Al-4Mg-1Zr. Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing, Vol.527 (No.15). pp. 3358-3364. ISSN 0921-5093
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Official URL: http://dx.doi.org/10.1016/j.msea.2010.01.030
Abstract
Multiple extrusion of Al-4Mg-1Zr (wt.%) is presented as a severe plastic deformation technique to develop an ultra-fine grained material, using rapidly solidified needles as a feedstock. After each extrusion pass the microstructure is refined, the primary Al3Zr precipitates are broken down and <50-nm-scale cubic Al3Zr are precipitated from solution. Recovery dominates the initial passes with recrystallisation becoming dominant during later passes, but the grains remain at the sub-mu m scale. Interestingly, the yield stress and the ultimate strength increased significantly after the first pass, and then decreased any strength increment gained from the grain refinement was offset by coarsening of the metastable nano-scale Al3Zr dispersoids. (C) 2010 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article | ||||
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| Subjects: | T Technology T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||
| Journal or Publication Title: | Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing | ||||
| Publisher: | Elsevier SA | ||||
| ISSN: | 0921-5093 | ||||
| Official Date: | 15 June 2010 | ||||
| Dates: |
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| Volume: | Vol.527 | ||||
| Number: | No.15 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | pp. 3358-3364 | ||||
| Identification Number: | 10.1016/j.msea.2010.01.030 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | European Union (EU), Engineering and Physical Sciences Research Council (EPSRC) | ||||
| Grant number: | GR/T26344/01 | ||||
| URI: | http://wrap.warwick.ac.uk/id/eprint/5857 |
Data sourced from Thomson Reuters' Web of Knowledge
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