Journal
RESULTS IN PHYSICS
Volume 15, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.rinp.2019.102633
Keywords
33Cr23Ni8Mn3N; Johnson-Cookmodel; Thermal deformation; Constitutive equation; Fields-Backofen model
Funding
- Hebei Provincial Department of Education Youth Talents Project [BJ2019010]
- Chinese Postdoctoral Science Found [2018M641186]
- graduate student innovation fund of North China University of Science and Technology [2019S28]
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In order to more accurately predict the plastic flow behavior of 33Cr23Ni8Mn3N heat-resistant steel, it provides a good foundation for numerical simulation. The selection of constitutive models is crucial. The Gleeble-1500D thermal simulation tester was used to perform thermal compression experiments on 33Cr23Ni8Mn3N heat-resistant steel under different deformation conditions. Based on the experimental data, the Johnson-Cook (JC), Fields-Backofen (FB) constitutive models and their modified constitutive models are established and compared. The characteristics of JC model, FB model, modified JC (m-JC) model, modified FB (m-FB) model and strain-compensated Arrhenius (strain-compensated Arr) model are demonstrated. It is determined that the strain-compensated Arr model has the best accuracy for predicting the thermal deformation behavior of 33Cr23Ni8Mn3N heat-resistant steel. In addition, finite element development was carried out and programming was performed using Absoft Pro Fortran 8.0 software. Various modified models are embedded in Deform-3D for numerical simulation comparison. The results of numerical simulation show that the strain-compensated Arr model is more suitable for finite element simulation of 33Cr23Ni8Mn3N heat-resistant steel.
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