Investigation of Twinning Activity in Magnesium Using Advanced In Situ Methods

Abstract:

The high-resolution neutron diffraction and acoustic emission (AE) techniques have been used for in-situ investigation of deformation twinning and microstructure evolution in cast polycrystalline magnesium. The combination of these two techniques results in obtaining complementary information about the twinning mechanism and evolution of the dislocation structure during the straining. The dependence of the mechanisms of the plastic deformation on loading mode is discussed in detail. The microscopy investigations revealed a difference in twin number and size after tension and compression, respectively.

• Periodical: Materials Science Forum (Volume 765)
• Pages: 532-536
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.765.532
• Online since: July 2013
• Authors: Kristián Máthis, Jan Čapek, Petr Lukáš, Donald W. Brown, Bjørn Clausen
• Keywords: Twinning, Acoustic Emission (AE), Elastic-Plastic Self-Consistent (EPSC) Model, Magnesium, Neutron Diffraction

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