|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Deformation and Damage Mechanisms in High Temperature Ni, Co and Fe-based Superalloys
||Investigation on Creep Properties of Alloy 709 (Fe-25Ni-20Cr) at 1023 K
||Abdullah S Alomari, Korukonda Linga Murty, Nilesh Kumar
|On-Site Speaker (Planned)
||Abdullah S Alomari
Advanced structural materials with excellent mechanical properties are needed for Gen-IV nuclear reactors to endure higher operating temperatures, higher radiation doses, and more corrosive environment relative to the current fleet of nuclear reactors. Alloy 709, 20%Cr-25%Ni austenitic stainless steel, is a candidate structural material for Sodium Fast Reactor which has higher technology readiness level for deployment among Generation-IV reactors. Understanding creep properties of Alloy 709 is essential to predict its long term creep performance. Creep tests were performed at 1023 K and stresses from 100-250MPa. The minimum creep rate, rupture life and creep ductility are evaluated and discussed in terms of the stress dependence on the minimum creep rate and the Monkman-Grant relation. Further tests at different temperatures are being conducted to estimate the activation energy for creep.
This research is supported by the Nuclear Energy University Programs (NEUP) of the Office of Nuclear Energy, U.S. Department of Energy.
||Planned: Supplemental Proceedings volume