Influence of heat treatment on the coefficient of thermal expansion of Al (6061) based hybrid composites

A review on conventional and nonconventional machining of SiC particle-reinforced aluminium matrix composites

“…Hong et al [32] showed the variation in yield strength and ultimate tensile strength of composites as a function of the volume percentage of SiC: the yield strength ranged from 75 MPa (0% SiC-2014Al) to 210 MPa (10% (volume fraction) SiC-2014Al) and the ultimate tensile strength ranges from 185 MPa (0%SiC-2014Al) to 308 MPa(10% (volume fraction) SiC-2014Al). Yan et al [33] produced Al matrix composites with high-volume fractions (55%-57%) of SiC particles using a new pressureless infiltration fabrication technology and described the properties of the SiC/Al composites as follows: density was 2.94 g/cm 3 ; elastic modulus was 220 GPa; flexure strength was 405 MPa; coefficient of thermal expansion (CTE) was 8.0 9 10 -6 /K; thermal conductivity (TC) was 235.0 W/(mÁK); Poisson's ratio was 0.23; and HV hardness was 200 N/mm 2 . Huang et al [34] fabricated 30% (volume fraction) SiC/6061Al composites using a pressureless sintering technique, and obtained the following properties: bending strength was 425.6 MPa; TC was 159 W/(mÁK); and CTE was 1.25 9 10 -5 /(20-100°C).…”

“…Meanwhile, the reinforcement material is generally a hard ceramic material, such as SiC, TiC, B 4 C [1], Si 3 N 4 , AlN, Al 2 O 3 , TiB 2 , ZrO 2 , and Y 2 O 3 [2]. The most widely used metal matrix materials for producing MMCs are aluminum and its alloys, because their ductility, formability, and low density can be combined with the stiffness and load-bearing capacity of the reinforcement [3]. Among numerous reinforcement materials, SiC is usually employed because it has some unique advantages, e.g., low cost, good hardness, and high corrosion resistance, compared to other reinforcements [4].…”

Structure and Properties of the Al-Sn-Cu Bearing Alloy under Different Cold Rolling Conditions

“…This can be explained by the fact that, cold rolling breaks down the Al-Cu compound and increases the rate of distribution Al 9 Cu 11.5 . The higher dislocation the greater density is created by cold rolling and will occur via drive force to diffuse the solute atoms and with creating more nucleation sites [15]. Sn atoms are larger size than Al atoms and they may collect Cu atoms around them to reduce the strain energy [16].…”

Toughness enhancement in architecturally modified Al6061-5 vol.% SiCp laminated composites

“…Discontinuously reinforced aluminum matrix composites (DRAs) have been recognized for their worthy combination of high specific strength (Abdizadeha and Baghchesara, 2013; Pandey et al., 1998), stiffness (Kumar Ghosh and Saha, 2011; Manoharan et al., 1990), and low density (Kumar et al., 2013). The ability of using conventional processing techniques such as extrusion, forging, and rolling makes DRAs notable candidates for a wide range of applications in the automobile, aerospace, and electronics industries (Benal and Shivanand, 2006; Hassan et al., 2004b; Oñoro et al., 2009). Particularly, aluminum composites have received considerable attraction in manufacturing various automotive engine components, such as cylinder blocks, pistons and piston insert rings, brake disks, and calipers (Ceschini et al., 2001).…”