The effect of strain rate on the plastic flow characteristics of steel and aluminium sheet
- 1 October 1966
- journal article
- research article
- Published by SAGE Publications in Journal of Strain Analysis
- Vol. 1 (5) , 439-446
- https://doi.org/10.1243/03093247v015439
Abstract
Work-hardening characteristics for sheet steel and aluminium have been obtained experimentally over a range of strain rates from 10−4 to 102/s. Use of the diaphragm test enables work-hardening characteristics to be obtained to much higher plastic strains than is possible in uniaxial tension. Results for killed steel show that the slope of the work-hardening characteristics decreases with increase in strain rate. Tentative extrapolation of the results suggests that if similar tests could be carried out at a strain rate of 104 then the work hardening characteristic would be that of an ideally plastic solid. In the case of aluminium the above phenomenon is not so marked and it is not possible to make even a tentative extrapolation to higher strain rates.Keywords
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