Enhancing the Efficiency of ECAP Processing in Particle Redistribution by Combination of Different Processing Routes

Abstract:

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The redistribution of the precipitate particles in Al-5Mg-2.5Si alloy during equal channel angular pressing (ECAP) up to 8 passes in five different routes 8BA, 8BC, 8BC-UD2, 4BA+4BC and 4BC-UD2+4BC is studied. It is shown that route BC, which exhibits an isotropic strain process, is less efficient in particle redistribution compared to route BA and route BC-UD2. Route BA and route BC-UD2 are more effective for particle redistribution, but result in an anisotropy structure with orientated alignment of the particles, especially in the case of route BA. As a compromise, relatively homogeneous microstructures with particles dispersively redistributed are obtained by combination of different processing routes 4BA+4BC and 4BC-UD2+4BC.

Info:

Periodical:

Materials Science Forum (Volumes 667-669)

Edited by:

Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon

Pages:

463-467

DOI:

10.4028/www.scientific.net/MSF.667-669.463

Citation:

W. L. Zhang et al., "Enhancing the Efficiency of ECAP Processing in Particle Redistribution by Combination of Different Processing Routes", Materials Science Forum, Vols. 667-669, pp. 463-467, 2011

Online since:

December 2010

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Price:

$35.00

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