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HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Effect of Equal-Channel Angular Pressing (ECAP) on...

Effect of Equal-Channel Angular Pressing (ECAP) on Creep in Aluminium Alloys

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Abstract:

This paper examines the effect of equal-channel angular pressing (ECAP) on creep behaviour of pure aluminium, binary Al-0.2wt.%Sc alloy and ternary Al-3wt.%Mg-0.2wt.%Sc alloy. The ECAP was conducted at room temperature with a die that had a 90° angle between the channels and 8 repetitive ECAP passes followed route BC. Constant stress compression creep tests were performed at 473 K and stresses ranging between 16 to 80 MPa on ECAP materials and, for comparison purposes, on the initial coarse-grained materials. The results showed that the creep resistance of the ECAP processed Al-Sc and Al-Mg-Sc alloys was markedly deteriorated with respect to unpressed coarse-grained materials.

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THERMEC 2006

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

2904-2909

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.2904

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Online since:

March 2007

Authors:

Václav Sklenička, Jiří Dvořák, Marie Kvapilová, Milan Svoboda, Petr Král, Ivan Saxl, Z. Horita

Keywords:

Aluminium Alloy, Creep Behaviour, Equal-Channel Angular Pressing (ECAP), Ultrafine Grained Microstructure

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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