|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Computational Materials Discovery and Optimization – From Bulk to Materials Interfaces and 2D Materials
||First Principle Investigation of Electrical Conductivity and Phase Stability of Al-Zn-Ni Alloy for Precipitation Hardening
||Oladeji Fadayomi, Gregory Odegard, Paul Sanders
|On-Site Speaker (Planned)
First principle calculation is used to develop a Al-Zn-Ni alloy with improved hardness (via precipitation hardening) and electrical conductivity for power line cables conductor. Ab initio density functional theory (DFT) simulations are used to screen combinations of Al-Zn-TM (TM = transition metals) to efficiently establish a TM alloy candidate (Al-Zn-Ni) with promising electrical conductivity. The enthalpies of formation of this alloy system was also computed using DFT simulation to identify its most stable precipitate phase as L12. This computational screening is followed by fabrication for age hardening and characterization of the Al-Zn-Ni system. The corresponding hardness and electrical conductivity measurements show a strength and electrical conductivity comparable to the Al alloys currently used for power line transmission cables.
||Definite: None Selected