|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Ultrafine-grained Materials X
||Role of Alloy Properties in Forced Chemical Mixing of Cu-X-Mo Ternary Alloys (X=Ni, Ag)
||Nisha Verma, Robert S Averback, Pascal Bellon
|On-Site Speaker (Planned)
The importance of the mechano-chemical properties of alloys on their phase evolution during severe plastic deformation is now well recognized, although few systematic investigations have been carried out to elucidate the basic mechanisms. We perform high pressure torsion experiments at very low temperatures, - 78 C, on a series of Cu-X-5 at.% Mo alloys X = Ni or Ag. The low temperatures prevent solute diffusion mediated by the enhanced vacancy concentration under shearing, while by controlling the concentration and identity of X, we systematically vary the hardness of the alloy and the heat of mixing. By initiating the alloys as solid solutions or as multiphase alloys, moreover, we examine the uniqueness of the steady states. The results are compared with molecular dynamics computer simulations.
||Planned: Supplemental Proceedings volume