Microstructure and High Temperature Strength in Fe3Al Base Alloys Containing Fine Carbide Particles
|Periodical||Materials Science Forum (Volumes 654 - 656)|
|Edited by||Jian-Feng Nie and Allan Morton|
|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|
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.