Theoretical and experimental evaluation of repetitive corrugation and straightening: Application to Al–Cu and Al–Cu–Sc alloys

Pandey, SC and Joseph, MA and Pradeep, MS and Raghavendra, K and Ranganath, VR and Venkateswarlu, K and Langdon, TG (2012) Theoretical and experimental evaluation of repetitive corrugation and straightening: Application to Al–Cu and Al–Cu–Sc alloys. Materials Science and Engineering A, 534. pp. 282-287. ISSN 0921-5093

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Official URL: http://dx.doi.org/10.1016/j.msea.2011.11.070

Abstract

Two alloys of Al–Cu and Al–Cu–Sc were processed for up to 4 passes using a facility for continuous repetitive corrugation and straightening (RCS). Hardness measurements were taken on the processed samples and specimens were cut from the processed sheets and tested in tension at room temperature. The results demonstrate that processing by RCS gives a very significant increase in hardness and this high level of hardness is introduced throughout the length of each sample. Thus, there is no wastage when metals are processed by RCS. The hardness values are further increased, and the degree of homogeneity is improved, if the samples are rotated by 90◦ between each consecutive pass through the RCS facility. The strength is higher for the Al–Cu–Sc alloy than for the Al–Cu alloy. A theoretical model is developed to explain the strength developed during processing by RCS. It is shown by calculation that the theoretical model is in excellent agreement with the experimental results.

Item Type: Article
Additional Information: Copyright to this article belongs to M/s. Elsevier BV
Uncontrolled Keywords: Severe plastic deformation (SPD);Submicrometer;High-pressure torsion (HPT)
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms. Alphones Mary
Date Deposited: 07 Mar 2013 05:53
Last Modified: 07 Mar 2013 05:53
URI: http://nal-ir.nal.res.in/id/eprint/11500

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