Open AccessConstitutive modelling of high strength low alloy steel under hot compression test
Author(s) -
Wilasinee Kingkam,
Ning Li,
Hong Pang,
Chengzhi Zhao,
Hexin Zhang,
Zhiming Li
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/715/1/012018
Subject(s) - materials science , flow stress , constitutive equation , isothermal process , strain rate , compression (physics) , arrhenius equation , composite material , atmospheric temperature range , hot working , thermodynamics , alloy , mechanics , physics , finite element method , quantum mechanics , kinetics
The HSLA steel was studied on an MMS-200 thermal mechanical simulation in the temperature range of 800-1100 °C and a strain rate range of 0.1-1 s −1 . The isothermal hot compression tests were used to investigate the flow behaviour of HSLA steel and develop a constitutive equation based on an Arrhenius equation. A modification of Zener–Hollomon parameter was considering the strain rate compensation after hot compression for improve the accuracy of the developed constitutive equation. The comparison of the results shows that the experimental flow stress data are in good agreement with the predicted flow stress data. The average absolute relative error with a correlation coefficient was found to be 6.81% and 0.96, respectively.