Linear analysis of parameters in Arrhenius model for Ti-6Al-4V at superplastic forming
ISSN: 0264-4401
Article publication date: 28 December 2020
Issue publication date: 9 July 2021
Abstract
Purpose
With the discussion on the linear relationship of determined material parameters, this study aims to propose a new method to analyze the deformation mechanism.
Design/methodology/approach
A modified constitutive model based on the hyperbolic sine Arrhenius equation has been established, which is applied to describe the flow behavior of Ti-6Al-4V alloy during the superplastic forming (SPF).
Findings
The modified constitutive model in this work has a good ability to describe the flow behavior for Ti-6Al-4V in SPF. Besides, a deformation map of titanium material is obtained based on the parameters. As the supplement, finite element models of high-temperature tensile tests are carried out as the application of the constitutive model.
Originality/value
The relationship between constitutive model parameters and forming mechanism is established, which is a new angle in rheological behavior research and constitutive model analysis.
Keywords
Acknowledgements
The support of the Key Research and Development Program of Shaanxi (Program No. 2020ZDLGY01-05) is acknowledged.
Citation
Yang, J., Wu, J., Zhang, Q., Ren, Y., Ruolan, H. and Wang, K. (2021), "Linear analysis of parameters in Arrhenius model for Ti-6Al-4V at superplastic forming", Engineering Computations, Vol. 38 No. 6, pp. 2528-2551. https://doi.org/10.1108/EC-05-2020-0266
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited