Title of article
The influence of Cr and Ce additions on the mechanical properties of Fe3Al based alloys
Author/Authors
Cieslar، نويسنده , , Miroslav and Karl??k، نويسنده , , Miroslav and Benko، نويسنده , , Martin and ?ernoch، نويسنده , , Tom??، نويسنده ,
Pages
5
From page
23
To page
27
Abstract
The influence of Cr and Ce solutes on the hardness evolution of an Fe–28 at.% Al alloy during isothermal and isochronal annealing in the temperature range 300–1000°C was studied. In the Cr-containing alloys, Cr–Fe–(C) precipitates were found after hot working and cooling. These precipitates were dissolved during annealing at 1000°C for 2 h. Subsequent isothermal and isochronal annealing caused their reprecipitation starting above 300°C. Preferentially they nucleate on dislocations, nearest-neighbor antiphase boundaries and subgrain and grain boundaries. It appears that the precipitate formation decreases the hardness of the alloy. The Ce addition and the Ce-containing particles influence neither the formation of Cr–Fe–(C) precipitates nor the evolution of hardness of the alloy.
Keywords
microstructure , Fe3Al , Hardness , Cr–Fe–(C) precipitates
Journal title
Astroparticle Physics
Record number
2059905
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