About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
|
Presentation Title |
Interface Engineered Tungsten Based Nanocomposites and Nanofoams for Harsh Environments |
Author(s) |
Daniel Kiener, Mingyue Zhao, Inas Issa, Michael Wurmshuber |
On-Site Speaker (Planned) |
Daniel Kiener |
Abstract Scope |
Interface engineering offers wide opportunities to tailor properties of nanostructured metals. We focus on topological and structural modifications of tungsten, namely nanocrystals, nanocomposites, and nanoporous foams. By controlling the constituents and interface states, we combine the beneficial properties of nanostructures, such as high strength, with the positive attributes of nanoporous foams in terms of weight reduction and radiation tolerance, demonstrating that these materials have great potential to satisfy the requirements for high performance materials that can endure harsh environments. Building on interface modified nanocrystalline W for enhanced ductility, a nanoporous tungsten modification, characterized by a continuous network of nanocrystalline tungsten ligaments and nanopores, was created on a bulk scale through a versatile processing route. The mechanical properties were investigated by in-situ small-scale deformation and fracture experiments and the elemental mechanisms governing the mechanical behavior elucidated. Furthermore, the resistance of this tailored material against irradiation damage will be addressed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Composites, Nanotechnology, Mechanical Properties |