|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Recent Developments in Biological, Structural and Functional Thin Films and Coatings
||High Stacking-Fault Energy Nanotwinned Materials
||Joel Bahena, Leonardo Velasco, Andrea Hodge
|On-Site Speaker (Planned)
Nanotwinned (nt) materials have shown improved mechanical properties, thermal stability, and corrosion resistance when compared to their ultrafine-grained and nanocrsytalline counterparts. To date, most studies of nt materials have focused on low stacking fault energy (SFE) metals, since the probability of twin formation decreases with increasing SFE. Therefore, twin formation in high SFE materials has not been thoroughly explored, limiting the potential applications. In this study, twin formation in several high SFE materials were explored through the synthesis of thin films by DC magnetron sputtering. The microstructures of the sputtered samples were characterized by TEM and FIB. Through the manipulation of the deposition parameters nanotwinned structures were observed in pure Al (SFE=166 mJ/m^2), Al-Mg alloys (SFE≤166mJ/m^2), and pure Ni (SFE=125 mJ/m^2) sputtered films.
||Planned: Supplemental Proceedings volume