In order to evaluate the uniform of SiCp reinforced aluminum metal-matrix composites (MMC) fabricated by powder metallurgy, the ultrasonic velocity imaging was carried out with the method of thickness independent reflector plate (TIRP). Ultrasonic velocity in MMC can be used to calculate the stiffness constants and Yang’s modulus, which are influenced by the volume percentage of SiCp. The TIRP ...

Rotary ultrasonic machining is a cost-effective and precise method for hard brittle materials. Aiming at processing SiCp/Al composites, rotary grinding spindle proposed in the present study. Expressions were established to calculate displacement, rotation angle, bending moment, shear force of vibrating elements based on Mindlin moderately thick plate theory. Combining continuous boundary condit...

Fatigue crack growth is examined in P/M 2124 aluminum alloys reinforced with SiC particles (SiCp) and whiskers (SiCw) over a wide spectrum of growth rates from 10 to 10 m per cycle. Effects of aging treatment, orientation of crack growth direction with respect to the rolling direction, mean stress (or stress ratio), and reinforcement volume percent on the fatigue crack growth threshold are inve...

Metal Matrix Composites is two or more combination material with aluminum metal as matrix and devolved to fix act, strength, high temperature stability hardness. composites have been developed so many because it has low density, corrosion proof, cheap easy fabrication. Powder metallurgy technique one of fabrication process in solid state that still economic, doesn't need difficult equipment. Al...

In this study, SiCp particles were reinforced at volumetric ratios of 5%, 10%, 15% and 20% into the EN AW 5756 (AlMg3) metal matrix composite by using squeeze casting method. The squeezing process was carried out for 10 seconds under a pressure 80 MPa. changes in wear behaviors friction coefficients 5754/SiCp samples examined under1.0 N force, 5000 cycles with 0.04 m/s sliding speed. As result ...