On Carbide Particle Reinforced Al Composites Fabricated by Pressureless Infiltration Technique

2005 ◽  
pp. 971-974
Author(s):  
Kon Bae Lee ◽  
Ho Sup Sim ◽  
Hyung Ryul Yang ◽  
Hoon Kwon
Keyword(s):  
Carbide Particle ◽  
Pressureless Infiltration ◽  
Infiltration Technique

On Carbide Particle Reinforced Al Composites Fabricated by Pressureless Infiltration Technique

2005 ◽  
Vol 475-479 ◽  
pp. 971-974
Author(s):  
Kon Bae Lee ◽  
Ho Sup Sim ◽  
Hyung Ryul Yang ◽  
Hoon Kwon
Keyword(s):  
Carbide Particle ◽  
Pressureless Infiltration ◽  
Strengthening Effect ◽  
Matrix Composites ◽  
B4c Particles ◽  
Infiltration Technique ◽  
Al Matrix Composites ◽  
Effective Reinforcement ◽  
Carbide Particles ◽  
Al Matrix

5052 Al matrix composites reinforced with carbide particles (SiC, TiC, and B4C) were fabricated by the pressureless infiltration and the tensile properties were analyzed. The strength values in the control Al were significantly increased over those of the commercial alloy while the strain to failure of the former decreased. Strength values in the composite reinforced with carbide particles were further increased compared to the control alloys. It was observed that strengthening effect by an addition of reinforcement varied with according to reinforcement types. By relative comparison, both TiC and B4C particles may be effective reinforcement compared to SiC particles in Al matrix composites.

Fabrication of BN/Al(-Mg) Metal Matrix Composite (MMC) by Pressureless Infiltration Technique

2004 ◽  
Vol 449-452 ◽  
pp. 301-304
Author(s):  
Woo Gwang Jung ◽  
Hoon Kwon
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Al Alloy ◽  
Pressureless Infiltration ◽  
Reaction Products ◽  
Thermodynamic Investigation ◽  
The Matrix ◽  
Infiltration Technique ◽  
Plate Type

BN/Al(-Mg) metal matrix composite (MMC) was fabricated by the pressureless infiltration technique. The phase characterizations of the composites were analyzed using the SEM, TEM, EDS and EPMA on reaction products after the electrochemical dissolution of the matrix. It is confirmed that aluminum nitride (AlN) was formed by the reaction of Mg3N2and Al alloy melt. Plate type AlN and polyhedral type Mg(-Al) boride were formed by the reaction between Mg2N2, BN and molten Al in the composite. The reaction mechanism in the fabrication of BN/Al(-Mg)MMC was derived from the phase analysis results and the thermodynamic investigation.

Oxidation Behavior of BN/(Al-Mg) Metal Matrix Composites

2005 ◽  
Vol 475-479 ◽  
pp. 975-978
Author(s):  
W.S. Woo ◽  
Woo Gwang Jung ◽  
Dong Bok Lee
Keyword(s):  
Metal Matrix Composites ◽  
Oxidation Resistance ◽  
Metal Matrix ◽  
Oxidation Behavior ◽  
Oxidation Mechanism ◽  
Pressureless Infiltration ◽  
Matrix Composites ◽  
Preferential Oxidation ◽  
Reinforcing Particles ◽  
Infiltration Technique

Metal matrix composites (MMCs) that consisted of Al-Mg matrix reinforced with initially added BN particles were fabricated using the pressureless infiltration technique, and their oxidation behavior was investigated at 500 and 550oC in air. Initially added BN particles were partly consumed to make AlN, as another reinforcing particles. Another reaction product was MgAlB2 dispersoids. Despite of the presence of these reinforcing particles, the oxidation resistance was not good owing to the formation of MgO-rich scale due to the preferential oxidation of Mg in the MMCs. Detailed microstructures and oxidation mechanism of the prepared MMCs are proposed.

SiC–Al–Si composites by rapid pressureless infiltration in air

1995 ◽  
Vol 10 (10) ◽  
pp. 2415-2417 ◽  
Author(s):  
X.F. Yang ◽  
X.M. Xi
Keyword(s):  
Volume Fraction ◽  
Low Cost ◽  
High Volume ◽  
Industrial Applications ◽  
High Volume Fraction ◽  
Molten Alloy ◽  
Pressureless Infiltration ◽  
Ceramic Preform ◽  
Infiltration Technique ◽  
Automobile Components

A rapid, pressureless infiltration technique for fabricating SiC-reinforced Al-Si composites is described. The infiltration can be performed by simply dipping a ceramic preform into a molten alloy in an open air environment. This method makes it possible to produce composites that contain a high volume fraction (80%) of a variety of ceramic reinforcements, including particulates and fibers. This technique has potential for low-cost and versatile production of SiC-Al-Si composites for many industrial applications, such as automobile components and electronic packaging.

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