|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials in Clean Power Systems IX: Durability of Materials
||Development of Creep Resistant High Cr containing FeCrAl Ferritic Alloys for Fossil Energy Applications
||Yukinori Yamamoto, Bruce A Pint, Benjamin Shassere, Sudarsanam Suresh Babu
|On-Site Speaker (Planned)
New ferritic steel alloy development has been initiated with alloy design concepts and strategies targeted at improved performances in terms of creep strength, environmental compatibilities, and weldability with a goal of operating at or above the upper temperature limit of the current fossil energy applications. Ferritic alloys based on Fe-30Cr-3Al (wt.%) together with minor alloying additions were designed with guidance from computational thermodynamics which incorporated the corrosion and oxidation resistance obtained from high Cr and Al additions, together with precipitate strengthening via second-phase intermetallic precipitates. The improved tensile and creep properties compared to Grade 91/92 steels were obtained in a temperature range above 600°C, and excellent oxidation and ash-corrosion resistance were also observed above 700°C. It was found that minor alloying additions, such as Nb, play an important role for the improved properties. Research sponsored by the Crosscutting Research Program, Office of Fossil Energy, U.S. Department of Energy.
||Planned: A print-only volume