ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
FeAl-TiB2 composites have been combustion synthesized from mixtures ofFe, Al, Ti and B powders. When the powder mixture was heated in vacuum toapproximately 900 K, an abrupt increase in temperature was observed, indicating thatthe combustion synthesis reactions occurred in the powder mixture. X-ray diffractionanalyses revealed that the combustion-synthesized sample consisted of only FeAl andTiB2. Metallographic investigations using a scanning electron microscope revealed thatfine TiB2 particles were dispersed in FeAl matrix phase. As the volume fraction of theTiB2 particles increased from 0.3 to 0.8 by controlling the powder mixture composition,the average TiB2 particle size increased to 1 to 7 μm and the average Vickers hardnessof the composites increased from 800 to 1600. This method has been applied to thefabrication of some other ceramic particle dispersed metal matrix composites such asFe-TiC and FeAl-TiC systems
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.809.pdf
