Conference Tools for 2021 TMS Annual Meeting & Exhibition

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About this Abstract
Meeting	2021 TMS Annual Meeting & Exhibition
Symposium	AI/Data informatics: Design of Structural Materials
Presentation Title	Structural Response Statistics of Deformed Polycrystals Leading to Rare Events
Author(s)	Curt A. Bronkhorst, Peter Marcy, Hansohl Cho, Scott Vander Wiel, Satyapriya Gupta, Veronica Anghel, George Gray
On-Site Speaker (Planned)	Curt A. Bronkhorst
Abstract Scope	We know qualitatively that the structure of metallic polycrystals has a strong impact on its response to mechanical loading. The heterogeneous nature of aggregate composite materials leads to highly statistical structural response at length scales related to grain size and dislocation interaction. A two-times difference between minimum and maximum von Mises stress for deformed cubic materials is typical. The von Mises stress variability is also very high in the vicinity of grain boundaries and triple lines and remains so for several microns away. Peach-Koehler force anomalies such as split screw dislocation core found in some materials leading to non-Schmid effects alters the statistical response of materials. Grain size effects can also alter the statistical response of materials in ways which we a just now beginning to explore. Quantitative results using advanced theories for granular behavior will be presented. We will also discuss implications for engineering models and material design.
Proceedings Inclusion?	Planned:

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