Mechanical and tribological behaviour of nano scaled silicon carbide reinforced aluminium composites

Figures & data

Table 1. Properties of initial materials (as said by suppliers).

Material	Melting point (°C)	Thermal conductivity (W/mk)	Density (g/cm^2)	Modulus of elasticity (GPa)	Co-efficient of thermal expansion (/°C)
AA2219	550	170	2.85	80	22.1 × 10^−6
SiC (50–70 nm)	2730	120	3.21	410	4 × 10^−6

Table 2. Chemical compositions of AA2219 aluminium alloy (as said by supplier).

AA2219	Si	Fe	Mn	Mg	Cu	V	Ti	Zr	Zn	Al
	0.2	0.3	0.4	0.02	6.1	0.15	0.1	0.25	0.1	Bal

Figure 1. Flow chart showing steps involved in sample preparation.

Figure 2. Scanning electron microscope (JEOL, Model JSM 6390LV, Japan).

Figure 3. UTM (Instron Make 3369): (a) tensile; (b) flexural.

Figure 4. Micro hardness tester (Model-VMHT MOT, Sl. No. 1002001, TechnischeMikroskopie).

Figure 5. Multi tribo tester (TR25, Ducom, India).

Figure 6. Microstructure of the produced materials: image of aluminium-silicon carbide, showing an overall uniform distribution of siliconcarbide (light grey regions) in the resin (dark matrix).

Table 3. Density and void content of aluminium and aluminium SiC composite.

	Density (g/cm^3)
Material of construction	Experimental	Theoretical	Void fraction (%)
Al	2.848	2.85	0.021
Al+0.5%SiC	2.851	2.852	0.028
Al+1%SiC	2.8527	2.854	0.032
Al+1.5%SiC	2.8543	2.855	0.039
Al+2.0%SiC	2.856	2.857	0.042
Al+2.5%SiC	2.8571	2.859	0.066

Figure 7. Vicker's hardness number for the aluminium and the composites with various % reinforcement.

Figure 8. Tensile properties: (a) modulus; (b) tensile strength; (c) deformation.

Figure 9. Tribological properties: (a) wear; (b) coefficient of friction.