|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Mechanical and Creep Behavior of Advanced Materials: A SMD Symposium Honoring Prof. K. Linga Murty
||The Creep-resistant High Entropy Alloys (HEAs)
||Haoyan Diao, Dong Ma, Wei Guo, Jonathan D. Poplawsky, Chuan Zhang, Fan Zhang, Karin A. Dahmen, Peter Liaw
|On-Site Speaker (Planned)
To create and design novel structural materials with the enhanced creep resistance, high-entropy alloys (HEAs) have attracted the interest of many scientists. In contrast to traditional alloys, HEAs have revolutionized alloy-design approaches, by employing the use of multi-principal elements. HEAs have shown to be suitable materials for elevated-temperature applications. Appropriate heat-treatments can successfully induce NiAl precipitates into the FCC matrix in HEAs and increase the yield strength. The fundamental creep and stress relaxation studies on both single-phase and NiAl-strengthened Al<SUB>x</SUB>CoCrFeNi have been performed at different stress levels and temperatures, using in-situ neutron diffraction. The microstructural evolution during creep test has been investigated by the atom probe tomography (APT) and transmission electron microscopy (TEM). The thermodynamics and kinetics of NiAl precipitates has been studied, through an integrated approach, i.e. coupling modeling [thermodynamic calculations and crystal-plasticity finite-element modeling (CPFEM)] with advanced experiments, to identify HEAs that outperform conventional alloys for high-temperature applications.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)