Fatigue Behaviour of Silicon Carbide and Fly Ash Dispersion Strengthened High Performance Hybrid Al 5083 Metal Matrix Composites

Abstract

Fatigue is a major issue concerning the use of aluminium composites in structural applications. Fatigue leads to weakening of material majorly due to the strain bands formed in the material when it is subjected to repeated loading; the damage that occurs due to fatigue is a progressive and localized one. The fatigue may occur at a stress limit much lesser than the ultimate stress limit of the composite specimen. Henceforth in the current work, fatigue behaviour of silicon carbide and fly ash dispersion strengthened high performance hybrid Al 5083 metal matrix composites are evaluated. The main purpose of fatigue characterisation is to distinctly evaluate the life cycle of components that are fabricated from metal matrix composites and eventually develop a framework model for the significant study of fatigue strength of the structure with persistent striations all along the interstitials of aluminiumsilicon carbide-fly ash interfaces. Fatigue is a stochastic process rather than a deterministic one that gives a considerable scatter, even among samples of similar composition with the tests carried out in some of the critically controlled environments. Hence there is a need for statistical validation of the results to authenticate the data collected. Thus in the current work, analysis of variance is carried out to establish the authenticity of the results and validate them. The results and plots are presented with suitable rationale and inferences.

Influence of the Fly Ash Material Inoculants on the Tensile and Impact Characteristics of the Aluminum AA 5083/7.5SiC Composites

“…The use of SiC and other ceramic reinforcements has their effect on the yield strength, plasticity, and wear of Aluminum composites; however, the entirety of these properties depend on the composition and the distribution of these reinforcements in the matrix phase [ 4 ]. The composition of alloying elements like Si, Fe, and Mg plays a significant role in enhancing the mechanical properties of Al/SiC composites [ 5 ].…”

Characterization of wear rate of Al-12 wt%Si alloy based MMC reinforced with ZrO2 particulates

“…These attributes are often unattainable within the individual constituent materials. For example, consider the conventional composite of bricks, where clay and cement serve as matrix components, while grass and sand act as reinforcement [4][5][6]. Typically, one component functions as the matrix, creating the continuous phase in which the reinforcing material is distributed [7][8][9].…”

Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15%Mg2Si Hybrid Composite for Marine Applications

“…Marine transport is increasing its usage of composites by exploiting their two leading qualities: lightness and corrosion resistance. In this regard, the composite materials can be used as hull materials for naval warships [6], gratings, ducts, shafts, piping, hull shells [7], ferrocement for the development of low-cost barges/ferro boats, glass-reinforced plastic boats [5], sailboats, furniture on super-yachts and ocean racing applications [8]. Among the many types of composites [9], aluminum metal matrix composites (Al MMCs) are produced to have high specific strength and stiffness, suitable for many long-term energy-saving applications that aim to reduce the structures' weight in many industries, including robotics, rotating shafts, and automotive engine, and shipbuilding [10].…”