About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Advanced Analysis of Acoustic Emission Response of the Main Deformation Mechanisms in Mg |
Author(s) |
Daria Drozdenko, Jan Bohlen, Alexei Vinogradov, Petr Harcuba, František Chmelík, Pavel Lukáč, Patrik Dobroň |
On-Site Speaker (Planned) |
Daria Drozdenko |
Abstract Scope |
Acoustic emission (AE) is a powerful in-situ technique for revealing the deformation mechanisms in the metals. This method provides integral information from entire volume about the dynamic processes during plastic deformation. In order to obtain a comprehensive set of AE data, Mg single crystals with various crystallographic orientations were uniaxially compressed at room temperature. Further, advanced statistical analysis of the raw AE signal – so called, adaptive sequential k-means (ASK) procedure - was applied for separating the signals from different sources. Investigation is completed by detailed insight into microstructure provided by in-situ SEM observation, preliminary and post-mortem EBSD mapping. Individual mechanisms of deformation and their interference, all with respect to given orientations of Mg single crystals, sample size, and related to specific stages of the deformation curve will be addressed. Obtained results can be applied in further studies of twinning and dislocation processes in polycrystalline Mg alloys. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |