| About this Abstract |
| Meeting |
2016 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2016
|
| Presentation Title |
Micro-Mechanical Characterization of Micro-Architectured Refractory Metal Coatings |
| Author(s) |
Quan Jiao, Jaafar A. El-Awady |
| On-Site Speaker (Planned) |
Jaafar A. El-Awady |
| Abstract Scope |
Recent advances in surface engineering has led to a new set of thermal barrier coatings based on refractory metals. Refractory metals, such as tungsten and its alloys, are primary candidate materials for coatings of structural components in extreme environments. In this talk we present the first set of micro-mechanical experiments to characterize the microstructure, mechanical properties, and damage modes of a new set of micro-patterned tungsten dendritic coatings developed by ULTRAMET. Micropillar like specimens are FIB milled into individual dendritic structures. The effect of pillar size on the deformation response is reported. We show that the strength of these dendritic coatings are equivalent to those reported for ultrafine-grained tungsten. We show that these coatings demonstrate ultrahigh strength equivalent if not beyond that of nanocrystalline tungsten. |
| Proceedings Inclusion? |
Planned: A print-only volume |