Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Abstract

Aluminum matrix composites are widely used in aerospace, automotive industry and defense sector owing to its excellent weight-to-strength ratio. Friction stir processing has emerged as an excellent technique to produce particle reinforced as well as fiber reinforced aluminum matrix composites. This article is a state of the art of aluminum matrix composite fabrication by friction stir processing route. The fabrication procedure has been discussed with carefully mentioning the parameters associated with the process. Microstructures and consequent mechanical properties of the composites have been evaluated. Particular attention is given on the microstructural modification and strengthening mechanism. Also the wear and corrosion behavior of the composites has been discussed thoroughly. Finally, the article has been concluded with some suggestions toward future work.

Characterization of novel molybdenum disulfide and cerium dioxide reinforced hybrid aluminum matrix composites fabricated by friction stir processing

“…The presence of porosities at low tool rotational speed (i. e. at 600 min −1 and 900 min −1 ) is clearly evident from the scanning electron microscopic images. The heat generation in friction stir welding/friction stir processing is proportional to the tool rotational speed for fixed tool traverse speed as ; where, Q is the amount of heat generation, ω is tool rotational speed and V is tool traverse speed [62]. At low magnitude of tool rotation, the quantity of heat generation is not enough for proper plasticization of the aluminum matrix.…”

“…Due to the misorientation with adjacent grain, the grain boundaries impede the dislocation motion. The grain size dependency of yield strength can be predicted from Hall‐Petch relationship as, where, is yield strength, , k are material constant and d is grain size of the material [62]. Therefore, the fine grain structure formed in friction stir processing due to thermo‐mechanical deformation depending on thermal gradient results in enhancement of tensile strength [67, 68].…”

Electrodeposition of Nickel matrix composite coatings via various Boride particles: A review

“…Metal matrix composite (MMC) is extensively used for strengthening engineering and substrate repair metal components as it combines the high strength and hardness of the ceramic phase with the good hardness of the matrix. MMCs can be made of a variety of materials, including Be, Ti, Mg, Fe, Ni, Al, and Co [27][28][29]. The Ni-based MMC covering, which is discussed in the next section, is one of the most interesting and challenging metal matrices covering.…”

Mechanical, microstructural and electrical properties of Al7075/SiC based hybrid composites with nano B4C, Graphene and CNT reinforcements

“…The end properties of the composites depend on many factors like type, size, weight fraction of the reinforcement particles, bond between the matrix and reinforcement particles etc. Among the many types of matrix material, aluminium is one of the favourable materials for aerospace to automotive applications [1][2][3][4]. Nowadays researchers focus on nano-sized reinforcement particles due to their improved properties when compared to the micro-level particles [1,5,6].…”