Paper Title:

Microstructure and High Temperature Strength in Fe3Al Base Alloys Containing Fine Carbide Particles

Periodical Materials Science Forum (Volumes 654 - 656)
Main Theme PRICM7
Edited by Jian-Feng Nie and Allan Morton
Pages 476-479
DOI 10.4028/www.scientific.net/MSF.654-656.476
Citation Satoru Kobayashi et al., 2010, Materials Science Forum, 654-656, 476
Online since June, 2010
Authors Satoru Kobayashi, Ryo Makihara, Takayuki Takasugi
Keywords Fe3Al, High Temperature Strength, Precipitation Strengthening
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Abstract

The precipitation of carbide particles and high temperature strength in a Fe3Al base alloy with C, Cr and Mo were investigated. The -Fe3AlC (E21) and M2C (B81) phases precipitated in the temperature range between 1000 C and 600 C in periods up to 10 h. The -Fe3AlC phase tended to precipitate in a film-like morphology on grain boundaries by annealing at relatively high temperatures. The M2C phase was dispersed in a fine needle shape within grains by annealing at 700 C. The film-like  precipitates covering grain boundaries as well as finely dispersed M2C particles was suggested to contribute to strengthening at 600 C.