Journal Published Online: 01 January 1985
Volume 13, Issue 1

Analysis of Hot Tension Test Data To Obtain Stress-Strain Curves to High Strains



High strain rate hot tension tests have been carried out on AISI 1020 (Unified Numbering System [UNS] G10200) steel using a Gleeble® testing machine. Tests have been terminated at a series of strains and the specimen geometries measured. From these measurements, local areas, strains, and strain rates are derived and are used to obtain the local true stress-true strain curves. These are corrected for the change in strain rate with strain using an equation of state. The corrected curves are in good agreement with published curves on similar steels determined by compression or torsion testing. Under the present testing conditions, the maximum strain to which correction can be applied is ∼ 1.5. This is imposed by the onset of rapid local deformation heating. Up to this strain, no stress correction of the Bridgmann type for necking appears to be necessary.

Author Information

Plaut, RL
IPT, Cidade Universitaria, San Paulo, Brazil
Sellars, CM
University of Sheffield, Sheffield, England
Pages: 7
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Stock #: JTE10758J
ISSN: 0090-3973
DOI: 10.1520/JTE10758J