Processing and properties of SiC particulate reinforced Al6.2Zn2.5Mg1.7Cu alloy (7010) matrix composites prepared by mechanical alloying

Structural and mechanical properties of Ni60Nb40 amorphous alloy particle reinforced Al-based composites produced by microwave-assisted rapid sintering

“…7b can be categorized into 2 regions. Composites in Region A exhibit high strength and low ductility, a behavior typical of MMCs under tension [37,38] Whereas those in Region B shows low strength and low ductility [39][40][41][42]. Considering the tensile data of the developed composites, it could be seen from the figure that the data of 5% V p composite lies in Region B and for 15% and 25% V p the data is in the Region A.…”

“…In Fig. 7b, the experimental results in terms of percentage change in ultimate tensile strength and ductility are compared with those of the conventional ceramic reinforced MMCs [37][38][39][40][41][42]. It is seen that the tensile properties of the amorphous alloy reinforced Al-composites exhibit properties superior/comparable to those observed in conventional particulate/short-fibre MMCs.…”

“…In conventional MMCs, strength anomaly (i.e. composite strength lower than unreinforced matrix) occurs due to factors such as inherent matrix properties, rate of work-hardening and residual stresses [39][40][41][42][43][44].…”

Processing of ultra-high strength SiCp/Al–Zn–Mg–Cu composites

“…For metal matrix composites, the coarser the reinforcement phase along the tensile direction is, the greater the tensile stress exerting on them is. Additionally, large particles contain more intrinsic defects and the microcracks may propagate in the reinforcements due to the presence of the pre-existing flaws within them (Bhaduri et al, 1996). Due to the obvious differences in properties between SiC and matrix alloy, such as elastic modulus, etc., the shearing stress existing at the interfaces will be enhanced with the increasing of the exerted stress.…”

Optimisation of mechanical milling process for production of AA 7075/(SiC or TiB2) composite powders

“…In the case of ball milling, the particles of a powder mixture are continuously trapped between colliding balls in a high energy ball mill, leading to repeated deformation, welding and fracturing of powder particles. 2,[6][7][8] In the 1960s, including the powders of nanostructured alloys and composites. When mixtures of powders (of different metals or alloys) are milled together to obtain a homogeneous alloy through material transfer, 'mechanical alloying' is the term alternatively used to describe the milling process.…”