Mechanical behaviour of hybrid composite (AA6351+Al2O3+Gr) fabricated by stir casting method
TL;DR: In this paper, a hybrid AA6351 aluminum matrix composites which incorporates stir casting route was used for fabrication and the microstructure and the mechanical behavior of the parent alloy and the produced composites were studied.
About: This article is published in Materials Today: Proceedings.The article was published on 2017-01-01. It has received 53 citations till now. The article focuses on the topics: Flexural strength & Ultimate tensile strength.
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TL;DR: Hard ceramic particle reinforced aluminum matrix composites (AMCs) are considered a distinct category of advanced materials which command outstanding strength, good corrosion resistance an... as mentioned in this paper, and good lifetime.
Abstract: Hard ceramic particle reinforced aluminum matrix composites (AMCs) are considered a distinct category of advanced materials which command outstanding strength, good corrosion resistance an...
145 citations
TL;DR: In the present scenario, composites are in huge demand in the industries due to their light weight, wear resistance, stiffness and high strength as discussed by the authors, and composites can be used in many industries.
Abstract: In the present scenario, composites are in huge demand in the industries due to their light weight, wear resistance, stiffness and high strength. The functional and structural properties were impro...
45 citations
01 Jan 2019
TL;DR: In this article, the physical and tribological performance of graphite and alumina particulates reinforced AA6351 matrix composites were examined experimentally and the worn surface morphology of the composite was evidently exposed by scanning electron microscope (SEM) technique.
Abstract: Metal matrix composites (MMCs) have been an active area of research and scientific investigation for past few years, but only in recent times, MMCs have become realistic engineering materials. In the present study, physical and tribological performance of graphite and alumina particulates reinforced AA6351 matrix composites were examined experimentally. These final composites are produced through liquid metallurgy process. To examine the worn surface morphology of the composite was evidently exposed by scanning electron microscope (SEM) technique. The experimental results expose the tribological properties of composites increased with inclusion of filler reinforcements.
35 citations
TL;DR: In this article, the authors focused on the production of aluminium (AA6351) matrix composites reinforced in different mass fractions of graphite particulates by using stir casting method, the mass fraction of reinforcement was varied from 0% to 12% in stages of 4%.
32 citations
TL;DR: In this paper, the influence of silicon carbide (SiC) particles addition on the properties of AA6351 aluminum matrix composites produced by liquid metallurgy route (Stir casting).
31 citations
References
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TL;DR: In this article, the feasibility of processing B4C reinforced Al composite was investigated and a comparison was made with the other two composites by means of optical and scanning electron microscopy (SEM).
543 citations
01 Dec 2001
TL;DR: In this article, the feasibility of processing B4C reinforced Al composite was investigated and a comparison was made with the other two composites by means of optical and scanning electron microscopy (SEM).
Abstract: Three aluminium metal matrix composites containing reinforcing particles of B4C, SiC and Al2O3 (0-20 vol. %) were processed. The stir-casting manufacturing route followed by hot extrusion was utilized, being one of the cost-effective industrial methods. In this study, the feasibility of processing B4C reinforced Al composite was investigated and a comparison was made with the other two composites. The microstructural distribution of reinforcing particles in all three composites was studied by means of optical and scanning electron microscopy (SEM). The distribution and chemical composition of the phases formed at matrix/particulate interface of the processed composites were also investigated by SEM and energy dispersive x-ray spectroscopy (EDX). A clear interfacial reaction product/layer was found at Al/SiC interface for composites held for a relatively long processing time (> 30 minutes). No reaction product was observed at Al/B4C and Al/Al2O3 interfaces at the resolution limit of the SEM used. On the other hand, two secondary phases (alumina and another phase containing aluminium, boron and carbon) were found in the aluminum matrix away from the interface in Al-B4C composites. From the fracture surface analysis, B4C reinforced Al composite seemed to exhibit a better interfacial bonding compared to the other two composites.
505 citations
TL;DR: In this article, the influence of graphite on the wear behavior of Al 7075/Al 2 O 3 /5.% graphite hybrid composite was investigated and the results revealed the effectiveness of incorporating graphite in the composite for gaining wear reduction.
Abstract: This work investigated the influence of graphite on the wear behavior of Al 7075/Al 2 O 3 /5 wt.% graphite hybrid composite. The investigation reveals the effectiveness of incorporation of graphite in the composite for gaining wear reduction. The Al 7075 (aluminium alloy 7075) reinforced with Al 2 O 3 –graphite were investigated. The composites were fabricated using liquid metallurgy route. Ceramic particles along with solid lubricating materials were incorporated into aluminium alloy matrix to accomplish reduction in both wear resistance and coefficient of friction. The Al 7075/Al 2 O 3 /graphite hybrid composite was prepared with 5 wt.% graphite particles addition and 2, 4, 6 and 8 wt.% of Al 2 O 3 . The hardness, tensile strength, flexural strength and compression strength of the Al 7075–Al 2 O 3 –graphite hybrid composites are found to be increased by increased weight percentage of ceramic phase. The wear properties of the hybrid composites containing graphite exhibited the superior wear-resistance properties.
468 citations
TL;DR: In this paper, the wear behavior of Al6061-T6 discontinuously reinforced with silicon carbide (SiC) and aluminium oxide (Al2O3) composite is investigated.
Abstract: This paper presents the wear behaviour of Al6061-T6 discontinuously reinforced with silicon carbide (SiC) and aluminium oxide (Al2O3) composite. The test specimens are prepared and tested as per ASTM standard. The experiments are conducted by using a pin on disc wear tester. Empirical relation is established to estimate the wear using statistical regression analysis and analysis of variance (ANOVA). The results indicated that the wear resistance of the 15% hybrid composite is better than that of the 5% composite. The fracture surface of composites shows the ductile tear ridges and cracked SiC and Al2O3 particles indicating both ductile and brittle fracture mechanism.
265 citations
TL;DR: In this article, the worn surfaces of hybrid composites and base alloys were studied through SEM and EDS systems and some useful conclusions were made by using a pin-on-disc apparatus with various input parameters like applied load (10, 20, and 30 n), sliding speed (0.6, 0.8, and 1.0 n), and sliding distance (1000, 1500, and 2000 m).
252 citations