Enhancing the Efficiency of ECAP Processing in Particle Redistribution by Combination of Different Processing Routes
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.
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
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