Effects of Annealing on Microstructure and Mechanical Properties of Bulk Nanocrystalline Fe3Al Based Alloy Prepared by Aluminothermic Reaction

Abstract:

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The effects of annealing on microstructure and mechanical properties of bulk nanocrystalline Fe3Al based alloy with 10 wt. % Ni prepared by aluminothermic reaction have been investigated. It was found that crystal structure of the alloy did not change after annealing at 600 and 800 °C, while it changed to ordered B2 and nanocrystalline grains orientations became random after annealing at 1000 °C. Average grain sizes of the alloy changed a little after annealing at different temperatures. The alloy after annealing had a large plastic deformation in compression at room temperature and the alloy annealed at 800 °C had the highest compressive yield strength of 1351 MPa. The alloy without annealing had much lower flow stress and good creep property in compression at 800 and 1000°C.

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Periodical:

Edited by:

Rongming Wang, Ying Wu and Xiaofeng Wu

Pages:

57-61

DOI:

10.4028/www.scientific.net/MSF.688.57

Citation:

P. Q. La et al., "Effects of Annealing on Microstructure and Mechanical Properties of Bulk Nanocrystalline Fe3Al Based Alloy Prepared by Aluminothermic Reaction", Materials Science Forum, Vol. 688, pp. 57-61, 2011

Online since:

June 2011

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$35.00

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