About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Seeing is Believing -- Understanding Environmental Degradation and Mechanical Response Using Advanced Characterization Techniques: An SMD Symposium in Honor of Ian M. Robertson
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Presentation Title |
Investigation of Slip Transmission through a Complete Grain-level Assessment of the Stress-strain Evolution in Polycrystalline Alloys |
Author(s) |
Michael D. Sangid, John Rotella, Diwakar Naragani, Jun-Sang Park, Peter Kenesei, Paul Shade |
On-Site Speaker (Planned) |
Michael D. Sangid |
Abstract Scope |
While many seminal studies of slip transmission in polycrystalline materials have been conducted in the past decades, typically the resolved stress state is approximated based on the nominal stress on the specimen. In this work, multi-modal experimental techniques are presented to measure and track the complete micromechanical state, evolving during loading, of each and every grain within the regions of interest. Specifically, a combination of high-energy X-ray diffraction microscopy and digital image correlation coupled with electron backscatter diffraction are conducted on a specimen for each of the alloys, (fcc) Haynes 282 and (hcp) Ti7Al. Higher resolution imaging is used for identification of the slip system activity and subsequently used to study slip transmission events in the Ti7Al specimen. An accurate knowledge of the resolved shear stress in adjacent grains (grain interactions) is demonstrated to be a key descriptor of the slip transmission events. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Other |