Anisotropic plasticity model considering the dynamic strain ageing effects
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A4 Artikkeli konferenssijulkaisussa
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2019-07-02
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Proceedings of the 22nd International ESAFORM Conference on Material Forming, ESAFORM 2019, AIP Conference Proceedings, Volume 2113
Abstract
For the precise description of plastic deformation behaviour of metallic materials in various forming processes, the accuracy of the applied constitutive model is of essential importance. It is well known that the mechanical properties of commonly used constructional materials, such as steels, aluminium alloys, are affected by several factors, temperature, strain rate, and loading orientation. However, a constitutive model considering all these involved phenomena with high accuracy is still missing. In this study, a comprehensive experimental program is designed to investigate the effects of anisotropy and temperature on the mechanical properties of a high-strength steel. The anisotropic flow behaviour of the investigated material is characterised by performing uniaxial tensile tests along three different directions with respect to the rolling direction. The thermal dependence of the mechanical properties, especially the flow stresses, is revealed by repeating uniaxial tensile tests along three directions over a wide range of temperatures, within which a special phenomenon called the dynamic strain ageing takes place. The mutual effects of the temperature and anisotropy on the plasticity are discussed. A phenomenological constitutive plasticity model is proposed to describe the anisotropic flow behaviour of the investigated material considering the complicated thermal effects over a wide range of temperatures.Description
Keywords
Other note
Citation
Shen, F, Lian, J, Münstermann, S, Kokotin, V & Pretorius, T 2019, Anisotropic plasticity model considering the dynamic strain ageing effects . in P Arrazola, E Saenz de Argandona, N Otegi, J Mendiguren, M Saez de Buruaga, A Madariaga & L Galdos (eds), Proceedings of the 22nd International ESAFORM Conference on Material Forming, ESAFORM 2019 ., 160017, AIP Conference Proceedings, vol. 2113, American Institute of Physics, International ESAFORM Conference on Material Forming, Vitoria-Gasteiz, Spain, 08/05/2019 . https://doi.org/10.1063/1.5112714