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Mechanical Properties of Fine-Grained AA1050 after ECAP

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Abstract:

The mechanical properties of fine-grained Aluminium AA1050 produced by ECAP at room temperature, have been investigated under various deformation modes. Because ECAP leads to an unstable microstructure, some samples were annealed at 300°C for 10 minutes in order to stabilise the microstructure. For mechanical testing, cylindrical samples were used in three types of monotonic deformation tests: axisymmetric compression, uniaxial tension and simple shear by torsion. The influence of the deformation mode on the yield locus and strain hardening behaviour has been studied and will be discussed for both hot rolled AA1050, ECAP samples without annealing and annealed ECAP samples. To achieve a better understanding of the strain hardening, some preliminary tests with a change in strain path were also performed. The results of tension tests followed by compression will be reported.

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Periodical:

Materials Science Forum (Volumes 503-504)

Pages:

847-852

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.503-504.847

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Online since:

January 2006

Authors:

Stijn Poortmans, Bert Verlinden

Keywords:

AA1050, Change in Strain Path, Equal-Channel Angular Pressing (ECAP), Flow Stress, Strain-Hardening

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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