Journal
MECHANICS RESEARCH COMMUNICATIONS
Volume 35, Issue 3, Pages 142-150Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechrescom.2007.10.002
Keywords
42CrMo steel; hot compression; dynamical recovery; dynamic recrystallization
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The compressive deformation behavior of 42CrMo steel was investigated at temperatures ranging from 850 to 1150 degrees C and strain rates from 0.01 to 50 s(-1) on Gleeble-1500 thermo-simulation machine. Based on the classical stress-dislocation relation and the kinematics of the dynamic recrystallization, the flow stress constitutive equations of the work hardening-dynamical recovery period and dynamical recrystallization period were established for 42CrMo steel, respectively. The stress-strain curves of 42CrMo steel predicted by the established models are in good agreement with experimental results when the strain rate is relatively low. So, the proposed deformation constitutive equations can be used to establish the hot formation processing parameters for 42CrMo steel. (c) 2007 Elsevier Ltd. All rights reserved.
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