Optimisation of parameters of single crystal model for aluminium bicrystals

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Optimisation of parameters of single crystal model for aluminium bicrystals

Wojciech Wajda, Henryk Paul

Instytut Metalurgii i Inżynierii Materiałowej PAN, Reymonta 25, 30-059 Kraków, Poland.

DOI:

https://doi.org/10.7494/cmms.2011.2.0354

Abstract:

The single crystal plasticity model is commonly used to simulate single- and bicrystal material behaviour. However the parameters for the model are difficult to find in the literature. In the paper inverse technique was used to obtain the parameters. Obtained parameters were applied to simulate behaviour of the plain strain compressed bicrystal. The results were validated by experiment. The experimental part (for validation purpose) focused on local orientation changes during plain strain compression of different aluminium bicrystals. Bicrystals composed of cube/hard {100)<001>/{110}<011> and cube/Goss {100}<001>/{110}<001> oriented grains were chosen. In both cases/configurations, the grains boundaries were parallel to compression planes. The analysis of the deformed samples was carried out at various scales by means of optical and scanning electron microscopy.

Cite as:

Wajda, W., & Paul, H. (2011). Optimisation of parameters of single crystal model for aluminium bicrystals. Computer Methods in Materials Science, 11(2), 357 – 363. https://doi.org/10.7494/cmms.2011.2.0354

Article (PDF):

Keywords:

Aluminium, Bicrystal, Cube, Hard, Goss orientations, Crystal plasticity model

References: