|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||The Design of Creep-resistant High Entropy Alloys for Elevated-temperature Applications
||Haoyan Diao, Chuan Zhang, Fan Zhang, Karin Dahmen, Peter K. Liaw
|On-Site Speaker (Planned)
The creation and design of novel structural materials with enhanced creep-resistance has always been the goal of many scientists. The high-entropy alloy (HEA) concept has revolutionized alloy-design approaches, by employing the use of multi-principal elements in contrast to traditional alloys, based on one or two principal elements with small amounts of alloying elements to achieve desired properties. HEAs have shown to be suitable materials for elevated-temperature applications. The fundamental studies on the AlxCoCrFeNi for use in boilers and steam and gas turbines at 760 °C and 35 MPa has been performed. The creep behavior and related deformation mechanisms of both single-phase and NiAl-strengthening HEAs have been studied, using in-situ neutron diffraction during tensile tests at different temperatures. The thermodynamics and kinetics of NiAl precipitates have also been investigated, through an integrated approach, coupling modeling and experiments, to identify HEAs that outperform conventional alloys for high-temperature applications.
||Planned: Supplemental Proceedings volume