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

Abstract:

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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.

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran

Pages:

2904-2909

DOI:

10.4028/www.scientific.net/MSF.539-543.2904

Citation:

V. Sklenička et al., "Effect of Equal-Channel Angular Pressing (ECAP) on Creep in Aluminium Alloys", Materials Science Forum, Vols. 539-543, pp. 2904-2909, 2007

Online since:

March 2007

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$35.00

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