Title of article
Microstructure and properties of in situ nanometric Al2O3 reinforced α-Fe(Al)–Fe3Al-based composites
Author/Authors
Li، نويسنده , , Jia and Kwong، نويسنده , , Fung-luen and Shi، نويسنده , , Riu-xia and Ng، نويسنده , , Dickon H.L. and Yin، نويسنده , , Yan-sheng، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
6
From page
50
To page
55
Abstract
The alpha phase Fe(Al)–Fe3Al-based composites reinforced with 4–9 vol.% α-Al2O3 dispersions were fabricated by hot-pressing sintering. Nanometer-sized α-Al2O3 dispersed homogeneously in the submicron α-Fe(Al) and Fe3Al matrix, with a 20% lattice-mismatch presented between α-Al2O3 and α-Fe(Al). Higher fracture toughness (39 MPa m1/2) and bending strength (1260 MPa) were obtained for composites containing both intragranular and intergranular Al2O3 grains. The combination of fine grain strengthening with dispersion strengthening can account for the improvement of mechanical properties.
Keywords
Iron aluminides composite , Particulate-reinforced , mechanical testing , microstructure
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2009
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2161410
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