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X-Ray diffraction study and die geometry effect on structural and mechanical characteristics of a nanosized severely deformed 6063 aluminum alloy

N. ŞERBAN1,* , D. RĂDUCANU1, V. D. COJOCARU1

Affiliation

  1. Materials Processing and Ecometallurgy Department, Materials Science and Engineering Faculty, University „Politehnica” of Bucharest, Romania

Abstract

Equal Channel Angular Pressing (ECAP) is the main Severe Plastic Deformation (SPD) technique for obtaining nanosized (NM) and ultrafine grained (UFG) materials, the advanced grain refinement obtained by SPD substantially enhancing microstructural and physicomechanical characteristics for the processed material. In our study, a commercial 6063 Al alloy was pressed at room temperature for nine passes using three different die geometries, the as-received and ECAP processed samples being considered for a series of structural and mechanical investigations. The specimens were firstly analyzed in OES and XRD tests. The Williamson-Hall method was applied for evaluating crystallite size and lattice strain. Samples were cut from each specimen and prepared for microstructural investigations (optical microscopy) and mechanical testing (compression and microhardness tests). Furthermore, the ECAP die geometry effects on structural and mechanical characteristics of severely deformed 6063 Al alloy were established..

Keywords

Aluminum alloys, Severe plastic deformation, ECAP processing, XRD analysis, Williamson-Hall technique.

Citation

N. ŞERBAN, D. RĂDUCANU, V. D. COJOCARU, X-Ray diffraction study and die geometry effect on structural and mechanical characteristics of a nanosized severely deformed 6063 aluminum alloy, Optoelectronics and Advanced Materials - Rapid Communications, 9, 9-10, September-October 2015, pp.1197-1203 (2015).

Submitted at: Aug. 30, 2015

Accepted at: Sept. 9, 2015