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Hot stress‐strain curves of steel determined by different kinds of deformation
Author(s) -
Kaspar Radko,
Müller Peter Michael,
Philipp FranzDieter,
Backmann Günter
Publication year - 1993
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199301579
Subject(s) - deformation (meteorology) , strain (injury) , materials science , stress–strain curve , stress (linguistics) , metallurgy , composite material , philosophy , medicine , linguistics
For the modelling of microstructure development during hot deformation operations as well as for the prediction of deformation loads stress‐strain data are required. For this purpose various laboratory deformation techniques are employed. On two steel grades (medium carbon Cr‐Mo steel and austenitic Cr‐Ni steel) axisymmetric and plane strain compression tests as well as torsion tests were applied with the aim of comparing equivalent stress‐strain curves determined by such different deformation tests. The results showed that for the calculations of deformation loads during multi‐deformation industrial operations with rather small individual deformation steps, the choice of laboratory deformation test is not a critical point. Nevertheless, conflicting results are expected by an exact interpretation of stress‐strain curves concerning microstructural development by using different testing methods.