| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-21: Modification of Twinning Behavior in Mg Alloys by Grain Boundary Intermetallic Particles |
| Author(s) |
Benjamin Anthony, Victoria Miller |
| On-Site Speaker (Planned) |
Benjamin Anthony |
| Abstract Scope |
Deformation twinning is a key mechanism in magnesium alloys, enabling deformation in a crystallographically hard direction but also contributing to premature failure, with twin boundaries serving as preferential crack pathways. Of particular concern is twin transmission, in which twin impingement at a grain boundary produces a local stress state that nucleates a second, adjoined twin in the neighboring grain, resulting in a twin boundary that extends across multiple grains. Coarse, micron-scale intermetallic particles located at grain boundaries may serve as a means of modifying twinning behavior and reducing the frequency of twin transmission. Samples of AM60 with varied particle fraction were deformed in tension to induce twinning and analyzed using electron backscatter diffraction (EBSD). Twinning and pole figure analysis indicate that grain boundary particles are associated with reduced frequency of twins that adjoin across parent grain boundaries, and that additional twin variants are activated. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Magnesium, |