A comparative study on Johnson–Cook, modified Johnson–Cook and Arrhenius-type constitutive models to predict the high temperature flow stress in 20CrMo alloy steel

He, Anrui; Xie, Ganlin; Zhang, Hailong; Wang, Xitao

doi:10.1016/j.matdes.2013.06.010

Cited by 218 publications

(102 citation statements)

References 26 publications

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“…Most experimental data of constitutive models are based on isothermal compression tests [8,9]. During compression processing, adiabatic heating and interfacial friction between the specimen and anvils have great influences on the mechanical responses of the materials [10].…”

Section: Introductionmentioning

confidence: 99%

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Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy

Dong

Zhang

et al. 2018

Metals

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Abstract:Isothermal uniaxial compressions of a Ti-6Al-4V alloy were carried out in the temperature range of 800-1050 • C and strain rate range of 0.001-1 s −1 . The effects of friction between the specimen and anvils as well as the increase in temperature caused by the high strain rate deformation were considered, and flow curves were corrected as a result. Constitutive models were discussed based on the corrected flow curves. The correlation coefficient and average absolute relative error for the strain compensated Arrhenius-type constitutive model are 0.986 and 9.168%, respectively, while the values for a modified Johnson-Cook constitutive model are 0.924 and 22.673%, respectively. Therefore, the strain compensated Arrhenius-type constitutive model has a better prediction capability than a modified Johnson-Cook constitutive model.

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Section: Introductionmentioning

confidence: 99%

“…A modified Johnson-Cook model was proposed by Lin [15] to overcome these drawbacks, and has been successfully applied to predict the flow stress in 20CrMo [8], titanium matrix composites (TiCp/Ti) [16], and Co-27Cr-5Mo alloy [17], etc. An Arrhenius-type model was applied to hot working by Sellars and Tegart.…”

Section: Introductionmentioning

confidence: 99%

Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy

Dong

Zhang

et al. 2018

Metals

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“…In the JC model, the flow stress is expressed as a function of strain, strain rate and homologous temperature m T * as presented in Equation (11) (Grujicic et al, 2012;He et al, 2013;Wang and Shi, 2013). (11) Where A, B, C, m and n are material constants.…”

Section: Jc Modelmentioning

confidence: 99%

A constitutive model on flow stress prediction from the contribution of twin and grain refinement, strain and strain rate during surface mechanical attrition treatment of metals

Leung¹,

Shi²,

Lü³

et al. 2016

J. Chem. Eng. Mater. Sci.

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A new constitutive equation is developed to model the flow stress on a metal surface undergone high speed impacts that result in strain hardening. The new equation is based on the Johnson-Cook model and has considered the effects of strain, strain rate, grain refinement, twin formation and twin spacing. Two mechanisms for the strain hardening are proposed: Grain refinement or twin formation, depending on the strain rate. At low strain rate, the Hall-Petch relation is obeyed, while at high strain rate, the flow stress is controlled by the formation of deformation twins. The theoretical estimation of flow stress agrees well with experimental data for stainless steel 304. According to the new model, the flow stress can be as high as 1.46 GPa at a strain rate of 10 5 /s.

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“…In the modified models, the JC model parameters are often expressed as a function of strain, strain rate, and temperature. For example, some modified JC models were improved to predict flow stresses of 20CrMo alloy steel [36], titanium matrix composites [37], and B1500HS boron steel [38]. Also, the improved JC model has been widely used in a variety of engineering applications, and embedded in a number of finite element software [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

A Modified Johnson-Cook Model for Hot Deformation Behavior of 35CrMo Steel

Wang

Huang

Xiao

et al. 2017

Metals

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Abstract:In this work, a compression experiment of 35CrMo steel is carried out over a wide range of temperatures (1123-1423 K) and strain rates (0.1-10 s −1 ) to obtain further understandings of the flow behaviors. The results show that the strain hardening effect of 35CrMo steel is stronger than that of dynamic recrystallization at low temperature and high strain rate; on the contrary, the rheological curves show typical dynamic recrystallization characteristics at high temperature and low strain rate. This indicates that the strain hardening and recrystallization behavior of 35CrMo steel is affected by temperature, strain and strain rate, and its true stress-strain curves can be observed typical work hardening and dynamic softening features. A modified Johnson-Cook (JC) model is developed to predict the flow stress of the alloy. The results of the comparison show that the predicted values of the modified JC model are in good agreement with the experimental values.

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A comparative study on Johnson–Cook, modified Johnson–Cook and Arrhenius-type constitutive models to predict the high temperature flow stress in 20CrMo alloy steel

Cited by 218 publications

References 26 publications

Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy

Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy

A constitutive model on flow stress prediction from the contribution of twin and grain refinement, strain and strain rate during surface mechanical attrition treatment of metals

A Modified Johnson-Cook Model for Hot Deformation Behavior of 35CrMo Steel

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