Journal
MATERIALS LETTERS
Volume 159, Issue -, Pages 253-256Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2015.07.008
Keywords
Severe plastic deformation; Protrusion; Aluminum; Ultrafine grain; Texture
Funding
- French State program Investment in the future [ANR-11-LABX-0008-01]
- China Scholarship Council [20120807 0035]
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The protrusions formed during twist extrusion of commercially pure aluminum were characterized in terms of microstructure, texture, strain and Vickers-hardness. Ultra-fine-grained structure was found with grain sizes down to 610 nm. The texture was identified as a shear texture with oblique shear plane with respect to the plane of the protrusion. The amount of strain was estimated theoretically and was also obtained by comparing the disorientation distribution in the protrusion with that observed in high pressure tube twisting. (C) 2015 Elsevier B.V. All rights reserved.
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