Mechanical Behaviour Modelling of an Mg-Stabilized Zirconia Reinforced TRIP-Matrix-Composite under Cold Working Conditions

Sergey Guk¹, Wolfhart Müller¹, Katja Pranke¹, Rudolf Kawalla^1,2

¹Institute for Metal Forming, TU Bergakademie Freiberg, Freiberg, Germany.
²Department of Plastic Deformation of Special Alloys, National University of Science and Technology MISIS, Moscow, Russia.

DOI: 10.4236/msa.2014.511081                

Abstract

In the present work, a new method to predict the stress-strain curves for three-phase materials has been developed. It was applied using the example of an Mg-stabilized zirconia reinforced TRIP-matrix-composite. The content of the ceramic phase was varied between 5% and 20%, whereas the particle size of the ceramic was selected to be 30 to 50 μm. The method is a further development of mixture rule for multiphase materials with more than two microstructure components. The prediction results were compared with the original method of mixture rule and with the IsoE-method. It is shown that the new method significantly improves the convergence compared to the standard method for mixture rule, even though it does not reach the accuracy of IsoE-method. Furthermore, there is an improvement of predicted convergence for large values of the total stress. Finally, a working map was designed for a quick graphical definition of the objective functions.

Keywords

Modelling, Mechanical Behaviour, Metal Matrix Composite, TRIP-Steel, ZrO₂

Conflicts of Interest

The authors declare no conflicts of interest.

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