|About this Abstract
||Materials Science & Technology 2020
||Environmentally Assisted Cracking: Theory and Practice
||Analyzing High-angle Grain Boundary Network Connectivity Using Graph Theory
||Syeda Noor E Sumaiya, Matthew A. Steiner
|On-Site Speaker (Planned)
||Syeda Noor E Sumaiya
Special boundaries with low interfacial energies, such as annealing twins in FCC metals, typically possess enhanced corrosion resistance and can inhibit stress corrosion cracking when incorporated into a microstructure in ways that break up the connectivity of more susceptible interfaces. Such grain boundary engineered microstructures are typically analyzed using parameters than can be readily extracted from EBSD data, notably the fraction of coincident site lattice (CSL) boundaries, or the ratio of triple junctions categorized by how many CSL boundaries they are coordinated with. Other techniques such as fractal analysis have been utilized in a limited number of cases, but none of these methods provides the type of local or directional specificity necessary to address gradated or heterogeneous microstructures. We will present preliminary results using graph theory based boundary connectivity measurements that are better suited to handle non-uniform microstructures and can be automated to run on standard EBSD data.