Effects of Rare-Earth Oxides Doping on Microstructures and Properties of Al2O3/TiAl Composites

Abstract:

Article Preview

Effects of rare-earth oxides addition (0.38~1.52 mol% of Sm2O3, Eu2O3 and Er2O3) on the property and microstructure of the hot-pressed (1300°C, 2h, 35 MPa) Al2O3 (12 wt %)/TiAl insitu composites have been investigated. The results show that the doping of rare-earth oxides has a positive effect on both mechanical properties and densities of Al2O3/TiAl composites. Densities enhanced with increasing of rare-earth oxides. The flexural strength and fracture toughness were higher than other samples when the rare-earth oxide content was 0.38 mol %. The matrix grains and Al2O3 particles were significantly refined, and Al2O3 particles evenly distributed in the matrix.

Info:

Periodical:

Materials Science Forum (Volumes 675-677)

Edited by:

Yi Tan and Dongying Ju

Pages:

143-146

DOI:

10.4028/www.scientific.net/MSF.675-677.143

Citation:

F. Wang et al., "Effects of Rare-Earth Oxides Doping on Microstructures and Properties of Al2O3/TiAl Composites", Materials Science Forum, Vols. 675-677, pp. 143-146, 2011

Online since:

February 2011

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.