@inproceedings{131309d7dd9e4abeaad7330036032ab9,
title = "Development of high Cr containing fecral alloys for fossil energy structural applications",
abstract = "New Fe-base ferritic alloys based on Fe-30Cr-3Al-Nb-Si (wt.%) were proposed with alloy design concepts and strategies targeted at improved performance of tensile and creep-rupture properties, environmental compatibilities, and weldability, compared to Grade 91/92 type ferritic-martensitic steels. The alloys were designed to incorporate corrosion and oxidation resistance from high Cr and Al additions and precipitate strengthening via second-phase intcrmetallic precipitates (Fe2Nb Laves phase), with guidance from computational thermodynamics. The effects of alloying additions, such as Nb, Zr, Mo, W, and Ti, on the properties were investigated. The alloys with more than 1 wt.% Nb addition showed improved tensile properties compared to Gr 91/92 steels in a temperature range from 600-800°C, and excellent steam oxidation at 800°C as well. Creeprupture properties of the 2Nb-containing alloys at 700°C were comparable to Gr 92 steel. The alloy with a combined addition of Al and Nb exhibited improved ash-corrosion resistance at 700°C. Additions of W and Mo were found to refine the Laves phase particles, although they also promoted the coarsening of the particle size during aging. The Ti addition was found to reduce the precipitate denuded zone along the grain boundary and the precipitate coarsening kinetics.",
keywords = "And corrosion, Creep, Ferritic steel, Laves phase, Oxidation, Tensile",
author = "Yukinori Yamamoto and Pint, {Bruce A.} and Benjamin Shassere and Babu, {Sudarsanam Suresh}",
note = "Publisher Copyright: Copyright {\textcopyright} 2016 Electric Power Research Institute, Inc.; 8th International Conference on Advances in Materials Technology for Fossil Power Plants ; Conference date: 11-10-2016 Through 14-10-2016",
year = "2016",
language = "English",
series = "Advances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference",
publisher = "ASM International",
pages = "318--325",
editor = "John Shingledecker and J. Siefert and Jonathan Parker",
booktitle = "Advances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference",
}