THE MECHANICAL THRESHOLD OF DYNAMICALLY DEFORMED COPPER AND NITRONIC 40 | Zendy

P.S. Follansbee | Zendy; U.F. Kocks | Zendy; G. Regazzoni | Zendy

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THE MECHANICAL THRESHOLD OF DYNAMICALLY DEFORMED COPPER AND NITRONIC 40

Author(s) -

P.S. Follansbee,

U.F. Kocks,

G. Regazzoni

Publication year - 1985

Publication title -

le journal de physique colloques

Language(s) - English

Resource type - Journals

eISSN - 2777-3418

pISSN - 0449-1947

DOI - 10.1051/jphyscol:1985504

Subject(s) - deformation (meteorology) , stress (linguistics) , copper , materials science , drag , strain rate , flow stress , strain (injury) , composite material , flow (mathematics) , mechanics , metallurgy , physics , medicine , philosophy , linguistics

Measurements of the mechanical threshold, or threshold stress, are reported on quasi-statically and dynamically deformed copper and Nitronic 40. The results for copper show that the increase of the threshold stress with strain rate is similar to that of the flow stress. In Nitronic 40 the results show that the ratio of the flow stress to the threshold stress is ~0.6. Both results indicate that the increased rate sensitivity found in these materials at high strain rates is not due to the predominance of a viscous drag deformation mechanism, as has been previously suggested

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