There is a developing interest in efficient materials in automobile and aerospace fields that involves the improvement of metal matrix composites (MMCs) with great properties which incorporate higher strength, hardness and stiffness, better wear and destructive resistance along with better thermal properties. This work deals with the evaluation of the mechanical and wear properties of the newly developed hybrid MMC of Al 5059/B₄C/Al₂O₃ produced by stir casting method. The main aim of the work was to evaluate the mechanical properties of various MMCs fabricated with various weight proportions of ceramic particles (B₄C and Al₂O₃). An increase in the tensile strength and the surface hardness was observed with the increase in the ceramic particles but there was a decrease in the percentage of elongation of the specimen. An increase in the ceramic content in the composite samples made the composite sample brittle (composite) from ductile (base metal).

In order to increase the strength of the joint, a novel spot welding process named walking friction stir spot welding(WFSSW) has been applied for AA 6061-T6 joints using a tool movement over a distance of 15mm. This process was carried out for four different tool rotational speeds and a better static shear strength was achieved at a tool rotational speed of 900rpm. Macro and microstructural analysis were made in order to analyze the local material microstruture evolution. The variation of microhardness in different regions of the weld was analyzed. Fatigue tests were conducted on lap-shear specimens at a stress ratio of R=0.1. Two different fracture modes were observed under both quasi-static and cyclic loading conditions. The fracture surfaces were analyzed by using optical and scanning electron micrographs

Binder jetting is a promising 3D printing technology that employs a liquid binder to selectively attach the particles of a pulverised material to form three-dimensional objects. It is also a popular technique for fabricating ceramics, as it permits the creation of intricate geometries and customised shapes that would be hard or impossible to achieve using conventional ceramic manufacturing techniques. This study focuses on the capabilities of some of the most essential ceramic materials, such as alumina, SiC, and calcium phosphate, to construct complicated geometries with a high level of accuracy and precision when using a process called binder jetting. These ceramic components find widespread usage in a broad variety of applications, including those relating to aircraft, biomedical, and industry.