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

Satoru Kobayashi; Ryo Makihara; Takayuki Takasugi

doi:10.4028/www.scientific.net/MSF.654-656.476

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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Microstructure and High Temperature Strength in...

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

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.

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Materials Science Forum (Volumes 654-656)

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476-479

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.476

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Online since:

June 2010

Authors:

Satoru Kobayashi, Ryo Makihara, Takayuki Takasugi

Keywords:

Fe₃Al, High Temperature Strength, Precipitation Strengthening

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