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ECAP with back pressure for optimum strength and ductility in aluminium alloy 6016. Part 2: mechanical properties and texture

Version 2 2024-06-04, 05:22
Version 1 2015-08-20, 15:43
journal contribution
posted on 2024-06-04, 05:22 authored by PWJ Mckenzie, Rimma LapovokRimma Lapovok
The simultaneous increase in strength and ductility of aluminium alloy 6016 processed by equal channel angular pressing (ECAP) was investigated. A complete study of microstructure, texture and mechanical properties after ECAP processing with and without back pressure was carried out for the O temper. The simultaneous increase in strength and ductility of AA6016-O with number of ECAP passes was explained by the use of back pressure during ECAP. A maximum ductility of ∼100% was obtained at the temperature of 200 °C and strain rate of 10−4 s−1, which is a significant improvement on the ductility exhibited by AA6016 (∼89%) after a conventional thermomechanical treatment at a much higher temperature of 500 °C. The mechanical behaviour was interpreted in the context of the textures developed in the material. A significant amount of texture rotation due to applied back pressure was found.

History

Journal

Acta materialia

Volume

58

Pagination

3212-3222

Location

Amsterdam, The Netherlands

ISSN

1359-6454

eISSN

1873-2453

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2010, Acta Materialia

Issue

9

Publisher

Elsevier