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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials in Clean Power
Presentation Title Microstructural Stability of High Cr Containing FeCrAl Alloys with Minor Alloying Additions
Author(s) , Bruce A. Pint, Benjamin Shassere, Sudarsanam Suresh Babu
On-Site Speaker (Planned)
Abstract Scope The effect of minor alloying additions on microstructural stability of Fe-30Cr-3Al-0.2Si-2Nb alloy was investigated. The additions of W, Mo, and Ti, substituting for Nb, were selected with guidance from thermodynamic calculations to control Fe2Nb Laves phase precipitation kinetics in the BCC-Fe matrix. These alloying additions lowered the solvus temperature to expand the process temperature window without decreasing the volume fraction of second-phase particles for precipitate strengthening at 700C. However, the alloying additions also resulted in coarsening the second-phase particles during aging at 700C. Optimization is required to balance the beneficial effects on the process window with the reduced particle size stability. The addition of Y stabilized the grain structure at elevated temperatures. This effect would aid in controlling grain size during hot-work processes, together with stabilizing the microstructure at the heat affected zone of weldments. Research sponsored by the Crosscutting Research Program, Office of Fossil Energy, U.S. Department of Energy.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)


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Early Stage Oxidation of Alloy 617 in CO2 Power Cycle Environments
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High Temperature Oxidation of Ni-base Alloys and Stainless Steels in Supercritical CO2 for Power Systems Applications
Manipulating Creep through Modifying Gamma Prime Coarsening Rate in Haynes 282 for A-USC Power Plants
Microstructural Stability of High Cr Containing FeCrAl Alloys with Minor Alloying Additions
Nickel-doped Titania Nanotube Arrays and Their Application in Hydrogen Production
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The Impacts of Alternative Fuels and Associated High Water Vapor Content Environments on the Stability and Aging of Turbine Hot-Section Materials
Transient Liquid Phase Bonding of Ni-based-superalloy-H230 for Microchannel Heat Exchanger for Application in Supercritical CO2 Cycles

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