MODELING OF MONOCRYSTALLINE MAGNESIUM MICROBEAM BENDING

• Main Authors: Jiří Němeček, Jan Maňák
• Format: Article
• Language: English
• Published: CTU Central Library 2018-12-01
• Series: Acta Polytechnica CTU Proceedings
• Subjects: magnesium, microbeams, crystal anisotropy, FE model
• Online Access: https://ojs.cvut.cz/ojs/index.php/APP/article/view/5331

This paper presents a numerical simulation of a micro-scale experiment on a magnesium alloy. Micro cantilever beams were fabricated using Focused Ion Beam technology in a single crystal of Mg. The cantilever beams have dimensions in the order of a few micrometers and a pentagonal cross section. Nanoindenter was used for cantilever beam bending and load-displacement curve was received. Cantilevers with two different crystallographic orientations were chosen for the experiment. Three dimensional numerical FE model with elastoplastic behavior respecting crystal anisotropy was used to fit experimental load displacement curves. Strengths and deformation energy were evaluated from the models for each cantilever.