213 Making Research Paper Fabrication of Carbon Fiber Preform for Low Pressure Infiltration Utilizing Cupper Powder and Infiltration of Molten Aluminum Alloy

In order to fabricate the metal matrix composites by low-pressure infiltration by gravity casting machine, the preform made from FeCrSi fiber with 40μm and matrix of A336.0 aluminum alloy 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 the infiltration of molten aluminum alloy to one direction by using barrier plate, the quantity of pores caused by curling of air degrades dramatically. Molten aluminum alloy was able to infiltrate at low pressure of 0.2MPa. As increasing the pressure, porosity in composites decreased. The composite with no pores was obtained by barrier plate and 0.8 MPa of molten alloy pressure. This composite had high strength at high temperature of 200-400oC.

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Measurement in Permeability Coefficient of Molten Aluminum Alloy in a Preform and Simulation of Infiltration under Low Pressure

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet.70.905 ◽

2006 ◽

Vol 70 (11) ◽

pp. 905-911 ◽

Cited By ~ 1

Author(s):

Kazuhiro Matsugi ◽

Yong Bum Choi ◽

Kazushi Arita ◽

Takashi Yamanaka ◽

Gen Sasaki ◽

...

Keyword(s):

Aluminum Alloy ◽

Permeability Coefficient ◽

Molten Aluminum ◽

Low Pressure ◽

Molten Aluminum Alloy

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1516 Fabrication of carbon fiber preforrn for low-pressure infiltration and optimization of i nfiltrationconditions to preform for molten aluminum

The Proceedings of Conference of Chugoku-Shikoku Branch ◽

10.1299/jsmecs.2011.49.475 ◽

2011 ◽

Vol 2011.49 (0) ◽

pp. 475-476

Author(s):

Gen SASAKI ◽

Moon Hee LEE ◽

Kenjiro SUGIO ◽

Yong Bum CHOI ◽

Kazuhiro MATSUGI

Keyword(s):

Carbon Fiber ◽

Molten Aluminum ◽

Low Pressure ◽

Pressure Infiltration

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Study on Critical Infiltration Behavior and Law of Liquid Aluminum Alloy in Carbon Fiber Preform

Materials Science ◽

10.5755/j01.ms.26.4.22105 ◽

2020 ◽

Vol 26 (4) ◽

pp. 408-414

Author(s):

Yuiqin MA

Keyword(s):

Aluminum Alloy ◽

Carbon Fiber ◽

Volume Fraction ◽

Liquid Aluminum ◽

Theoretical Research ◽

Fiber Preform ◽

Mechanical Pressure ◽

Pressure Infiltration ◽

Infiltration Pressure ◽

Infiltration Method

Infiltration effect is an important factor for the preparation of ideal CF/Al composites by liquid infiltration method, so it is necessary to study the infiltration law of aluminum alloy in carbon fiber preform to obtain composite with sufficient and uniform infiltration effect. Through theoretical analysis and calculation of statics and dynamics, critical infiltration pressures of the liquid aluminum alloy in the 2D carbon fiber preform were 0.53 MPa and 3.24 MPa, respectively, when carbon fiber volume fraction was 45 %. Mechanical pressure infiltration method was used to study critical infiltration pressures and behavior of the liquid aluminum alloy in the 2D carbon fiber preform, and the experimental results indicated that the infiltration front of aluminum alloy had never broken through the surface of carbon fiber preform, when the infiltration pressure was 3.5 MPa. Carbon fibers and aluminum alloy were separated and the infiltration effect was not ideal under the pressure of 3.5 MPa. When the infiltration pressure was 7 MPa, the infiltration could be implemented. The actual infiltration pressure of the experiments is greater than the theoretical calculation value, because viscous resistance, solidification resistance and other factors are ignored in the calculation process. However, infiltration depth increases with increase in infiltration time at infiltration pressure of 7 MPa, and this verifies the correctness of the previous theoretical research results.

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