About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
|
12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
The Role of Intermetallic Particle Morphology and Position in Twin Transmission across Grain Boundaries |
Author(s) |
Benjamin Anthony, Victoria Miller |
On-Site Speaker (Planned) |
Benjamin Anthony |
Abstract Scope |
Deformation twins in magnesium alloys contribute to early failure during room temperature forming by providing void nucleation sites and preferential crack pathways. This is particularly true for instances of twin transmission where the stress imposed at a grain boundary by a twin nucleates a new twin in the neighboring grain, leading to thicker twins and longer continuous twin boundaries. Many commercial alloys feature coarse intermetallic particles at the grain boundaries in their as-solidified state, but the role of these particles in modifying twinning behavior has only been studied computationally. Experimental validation via electron backscatter diffraction is used to perform a statistical analysis of twinning in thixomolded AM60 with varying particle volume fractions to determine their effect on twinning behavior and transmission frequency, particularly with respect to size, aspect ratio, and distance from the impingement site. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |