✦ LIBER ✦

Strain rate sensitivity of Cu after severe plastic deformation by multiple compression

✍ Scribed by Li, Y. J. ;Blum, W.

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 479 KB
Volume: 202
Category: Article
ISSN: 0031-8965
DOI: 10.1002/pssa.200521160

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✦ Synopsis

Abstract

Coarse‐grained Cu99.99 was prestrained by ε~pre~ in multiple compression in three orthogonal directions at room temperature. While the flow stress σ saturates at ε~pre~ ≈ 2, the strain rate sensitivity of σ at 318 K increases by a factor of ≈ 2.7 from ε~pre~ = 2 to 7. This increase is attributed to decrease of grain size and corresponding increase in fraction of high‐angle grain boundaries. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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