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Hardening Effects of Precipitates with Different Shapes on the Twinning in Magnesium Alloys

MPG-Autoren
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Fan,  Haidong
Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Key Laboratory of Energy Engineering Safety and Disaster Mechanics (Ministry of Education), Department of Mechanics, Sichuan University, Chengdu, China;

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Zitation

Fan, H., & El-Awady, J. A. (2019). Hardening Effects of Precipitates with Different Shapes on the Twinning in Magnesium Alloys. Minerals, Metals and Materials Series, 257-261. doi:10.1007/978-3-030-05789-3_38.


Zitierlink: https://hdl.handle.net/21.11116/0000-0008-F54E-D
Zusammenfassung
Molecular dynamics (MD) simulations were performed to quantify the effect of the precipitate shape on the interactions with extension twin boundaries in magnesium alloys. Three precipitate shapes, including plate-, cube- and rod-like, were studied. The simulation results indicate that the blocking effect of plate-like precipitate is weakly affected by the precipitate aspect ratio (plate width/plate thickness; so, cube-like precipitate is at aspect ratio of 1), while the rod-like precipitate has a hardening effect decreasing with the increasing aspect ratio (rod length/rod width). This suggests that the plate-like precipitate has an identical hardening effect as the cube-like precipitate and a higher effect than the rod-like precipitate. © 2019, The Minerals, Metals Materials Society.