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

Li Y. J. | Zendy; Blum W. | Zendy

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

Author(s) -

Li Y. J.,

Blum W.

Publication year - 2005

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200521160

Subject(s) - strain rate , materials science , flow stress , compression (physics) , sensitivity (control systems) , deformation (meteorology) , strain (injury) , grain size , composite material , plasticity , stress (linguistics) , severe plastic deformation , metallurgy , electronic engineering , medicine , linguistics , philosophy , engineering

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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