Title

Critical Grain Size for Change in Deformation Behavior in Ultrafine Grained Al-Mg-Sc Alloy

Abstract

Experimental evaluation of critical grain size for the change in deformation behavior from strain hardening to strain softening in ultrafine grained (UFG) Al-Mg-Sc was carried out. UFG alloy was processed using friction stir processing (FSP). Two different average grain sizes were obtained by changing the FSP parameters. UFG alloy with grain size larger than the subgrain size showed sufficient strain hardening during tensile testing, whereas smaller grain size material exhibited strain softening.

Department(s)

Mechanical and Aerospace Engineering

Second Department

Materials Science and Engineering

Keywords and Phrases

Critical Grain Size; Friction Stir Processing; Strain Softening; Ultrafine Grains

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2011 Elsevier, All rights reserved.


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