|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||High Entropy Alloys VI
||Compositional Effects on Thermal and Electrical Transport Properties in Ni-containing Single-phase Concentrated Solid Solution Alloys
||Ke Jin, Brian C Sales, George Malcolm Stocks, Ke An, Wallace D Porter, Yanwen Zhang, William J Weber, Hongbin Bei
|On-Site Speaker (Planned)
The compositional complexity in high entropy alloys strongly affects their intrinsic physical properties by introducing extreme chemical and magnetic disorder. In this study, thermal and electrical transport properties in Ni and eight Ni-containing single-phase face-center-cubic concentrated solid solution alloys, from binary to quinary, have been systematically studied over a broad temperature range, from 5 to 1273 K. They have weak correlation with the number of elements but strongly depend on the type of elemental combinations. The scattering of electrons is significantly increased due to the magnetic disorder. The alloys in which all elements are ferromagnetically coupled exhibit low electrical resistivity and high thermal conductivity; those alloys containing a mixture of ferromagnetically and antiferromagnetically coupled elements exhibit more than an order higher electrical resistivity and much lower thermal conductivity. This work was supported by EDDE, an EFRC supported by U.S. DOE, BES. Neutron diffraction was performed at SNS at ORNL.
||Planned: Supplemental Proceedings volume