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ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5093(99)00744-3
关键词
aluminum; equal-channel angular pressing; plastic straining; ultrafine grain size
A multi-pass facility was fabricated for equal-channel angular (ECA) pressing which gave a total strain of approximately 5 on a single passage through the die. Experiments on high purity aluminum show that, when comparisons are made at the same total strains. both the hardness and the evolution of the microstructure are identical when using the multi-pass facility or when repetitively pressing samples through a standard die containing a single shearing plane. (C) 2000 Elsevier Science S.A. All rights reserved.
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