About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Ultrafine-grained and Heterostructured Materials (UFGH XII)
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Presentation Title |
Hetero-deformation Induced (HDI) Stress in Heterostructured Materials: What We Know and Need to Know |
Author(s) |
Yuntian Zhu |
On-Site Speaker (Planned) |
Yuntian Zhu |
Abstract Scope |
Abstract: Recently, heterostructures are found to produce unprecedented strength and ductility that are considered impossible based on the materials science in our textbooks. Such superior mechanical properties are enabled by a new scientific principle: hetero-deformation induced (HDI) stress. Our recent experimental observations have verified that the HDI stress is produced by the piling up of geometrically necessary dislocations (GNDs) against the hetero-zone boundaries. However, there are still many fundamental issues that need to be probed so as to understand how GNDs interact with the zone boundaries. In this talk, I’ll briefly review the recent progresses on this topic and what we need to furtehr study experimentally using in-situ TEM and other techniques. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, Other |