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:
In order to fabricate the metal matrix composites by low-pressure infiltration by gravitycasting machine, the preform made from FeCrSi fiber with 40μm and matrix of A336.0 aluminumalloy was used. The volume fraction of fiber in preform was about 20%. The temperatures of die,preform and molten alloy were 200 oC, 400 oC and 750 oC, respectively. By controlling theinfiltration of molten aluminum alloy to one direction by using barrier plate, the quantity of porescaused by curling of air degrades dramatically. Molten aluminum alloy was able to infiltrate at lowpressure of 0.2MPa. As increasing the pressure, porosity in composites decreased. The compositewith no pores was obtained by barrier plate and 0.8 MPa of molten alloy pressure. This compositehad high strength at high temperature of 200-400oC
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.769.pdf