Microstructure scale modelling of the WC and Co phases plastic behaviour in the WC-Co composite with different cobalt contents and for different temperatures. Comparison of the Drucker-Prager and Mises models - Université de Lorraine Access content directly
Journal Articles International Journal of Refractory Metals and Hard Materials Year : 2021

Microstructure scale modelling of the WC and Co phases plastic behaviour in the WC-Co composite with different cobalt contents and for different temperatures. Comparison of the Drucker-Prager and Mises models

Abstract

Despite several years of research and development works, the understanding of the tungsten carbide (WC-Co) behaviour under complex thermomechanical loading is not yet complete. Indeed, data is quite rare for the elevated temperatures encountered in the various applications and makes the description of this material a difficult task. In the present work, the elastoplastic behaviour of various grades of WC-Co composites are simulated numerically from room temperature up to 900 °C thanks to the creation of realistic microstructures. This microstructure-level model allows to determine the representative volume element (RVE) considering the two phases tungsten carbide (WC) and cobalt (Co) to reproduce the real macroscopic behaviour of the composite under compression loading. The elastoplastic behaviour of the Co phase has been identified from the literature and the yield criterion of WC phase estimated at different temperatures by the introduction and determination of two temperature functions α1(T) and α2(T). The latter represent the dependence of the yield stress and hardening, respectively. A comparison between the von Mises and Drucker-Prager criteria applied to the WC phase has been also discussed. A good agreement is obtained between the numerical simulation results and experimental data.
Fichier principal
Vignette du fichier
Article KOFI.pdf (3.07 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03325743 , version 1 (02-02-2022)

Identifiers

Cite

K.E. Agode, C. Wolff, M. Nouari, A. Moufki. Microstructure scale modelling of the WC and Co phases plastic behaviour in the WC-Co composite with different cobalt contents and for different temperatures. Comparison of the Drucker-Prager and Mises models. International Journal of Refractory Metals and Hard Materials, 2021, 99, pp.105588. ⟨10.1016/j.ijrmhm.2021.105588⟩. ⟨hal-03325743⟩
53 View
180 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More