| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Shifting of Failure Patterns in Aluminium-Magnesium Alloy Incorporated With Faceted Grain Boundary: An Atomistic-Scale Investigation |
| Author(s) |
Akarsh Verma, Sandeep Kumar Singh, Shigenobu Ogata |
| On-Site Speaker (Planned) |
Akarsh Verma |
| Abstract Scope |
Here in, the authors have elucidated the effect of alloying biocompatible and lighter Magnesium (Mg) solute atoms in a bicrystalline Aluminium (Al) solvent incorporated with a faceted coherent-incoherent grain boundary (GB) to analyze the tensile deformation mechanisms. A notable transition in deformation patterns was observed between pure Al and Al-Mg alloys. Specifically, in the pure Al bicrystalline model, GBs served as dislocation nucleation sites; however, in the Al-Mg alloy model, dislocation nucleation occurred unexpectedly at both GBs and within grains. Consequently, while stacking faults (SFs) originated from GBs and propagated towards grains in Al, dislocations in Al-Mg alloys emerged simultaneously from both GBs and grains. This dual nucleation process from GBs and grains, renders the Al-Mg alloys weaker than the pure Al, with the degree of weakening directly proportional to the Mg content, at least up to 10 at%. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Magnesium |