Processing and compressive strength of Al–Li–SiCp composites fabricated by a compound billet technique

Bauri, Ranjit; Surappa, M.K.

doi:10.1016/j.jmatprotec.2008.04.058

Cited by 34 publications

(11 citation statements)

References 21 publications

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“…The refinement of dendritic arms is due to the heterogeneous nucleation caused by the addition of reinforcement particles into the matrix alloy. This refinement of grains further increases the hardness and compressive strength of the composite [11]. A similar result has been reported by Kumar et al on reinforcing silicon carbide (SiC) and zircon particles into LM13 alloy [12].…”

Section: Compressive Strength Of Al-si-mg Alloy and Synthesized Composupporting

confidence: 82%

Microstructure, mechanical properties and corrosion behaviour of Al–Si–Mg alloy matrix/zircon and alumina hybrid composite

Kumar

Subramanian

Shalini

et al. 2015

Forsch Ingenieurwes

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advantages of these MMCs are reduced processing cost compared to other matrix materials such as magnesium and titanium [4] as well as ease of fabrication [1,5]. Mechanical properties and corrosion behaviour of Al MMCs are very important requiring consideration in composite material design to ensure material reliability in applications such as aerospace, defence, automotive and sports [1]. In addition to use of Al MMCs in various corrosive environments, a detailed study has to be carried out on aluminium-based alloys and their composites [6]. From the available literature, it is found that the mechanical properties and corrosion behaviour of these composites are influenced by several factors such as the type, size and distribution of reinforcement added, method used for preparation of the composite, alloy composition and the interface between the matrix and reinforcement [7,8]. Any change in the above parameters can significantly alter the properties of these composites [8,9]. These properties are also influenced by the presence of heterogeneities such as reinforcement, voids, secondary phase precipitates and interaction products [9]. Although Al MMCs with different combinations of reinforcements have been widely investigated, only limited literature is available on zircon and alumina reinforced MMC. The choice of zircon and alumina as reinforcement is believed to significantly improve the mechanical properties and corrosion behaviour of Al-alloy-based hybrid composite. Hence in this work an attempt has been made to study the microstructure, mechanical properties and corrosion behaviour of this new combination of hybrid composite. AbstractIn the present study, the effect of reinforcement on microstructure, mechanical properties and corrosion behaviour of aluminium-silicon-magnesium (Al-Si-Mg) alloy matrix hybrid composites reinforced with varying amounts of zircon and alumina has been investigated. Hardness and room temperature compressive tests were performed on Al-Si-Mg alloy as well as composites. Hardness and compressive strength was found to be higher for composites containing 3.75 % ZrSiO 4 + 11.25 % Al 2 O 3 . Similarly, Al-Si-Mg alloy and its composites were studied for corrosion behaviour in 1 N HCl corrosive media. The weight loss of all the composites was found to decrease with time due to the formation of passive oxide layer on the sample surface. The results obtained indicate that composites exhibit superior mechanical properties and corrosion resistance compared to unreinforced alloy.

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Section: Compressive Strength Of Al-si-mg Alloy and Synthesized Composupporting

confidence: 82%

Microstructure, mechanical properties and corrosion behaviour of Al–Si–Mg alloy matrix/zircon and alumina hybrid composite

Kumar

Subramanian

Shalini

et al. 2015

Forsch Ingenieurwes

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“…AMCs have better mechanical properties over unreinforced Al/Al alloy due to change in matrix microstructure [3,52].…”

Section: Properties Of Al Based Metal Matrix Nano Compositesmentioning

confidence: 99%

Nano and hybrid aluminum based metal matrix composites: an overview

2015

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-Aluminium matrix composites (AMCs) are potential light weight engineering materials with excellent properties. AMCs find application in many areas including automobile, mining, aerospace and defence, etc. Due to technological advancements, it is possible to use nano sized reinforcement in Al matrix. Nano sized reinforcements enhance the properties of Al matrix compared to micro sized reinforcements. Hybrid reinforcement imbibe superior properties to aluminium matrix composites as compared with Al composites having single reinforcement. This paper is focused on overview of development in the field of Al based metal matrix with nano and hybrid aluminium based composites.

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“…During the last decade novel computational methods have been introduced in some fields of engineering sciences, including the materials science. Metal matrix composites (MMCs) are gaining wide spread popularity in several technological fields owing to its improved mechanical properties when compared with conventional metals/alloys (Bauri and Surappa, 2009;Blumenthal et al, 1994;Shabani, 2012c, 2012d;Pyzik and Aksay, 1989;Rhee, 1970;Shabani and Mazahery, 2012cXiao, 2010). Among the several categories of MMCs, Al based composites are finding wide spread acceptance especially in applications where weight and strength are of prime concern (Karnezis et al, 1998;Mazahery and Shabani, 2012e;Razavi et al, 2008;Shabani and Mazahery, 2012f;Tian and Fu, 2011;Xu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Searching for the superior solution to the population-based optimization problem: Processing of the wear resistant commercial AA6061 AMCs

Mazahery

Shabani

Elrefaei

2014

International Journal of Damage Mechanics

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In this present work, stir casting technique was used to fabricate aluminum matrix composites with varying weight percentages of SiC (5, 10 and 15) reinforcements. The proper selection of process parameter such as pouring temperature, stirring speed, stirring time and pre-heat temperature of reinforcement can all influence the quality of the fabricated composites. The porosity level of composite should be minimized and the chemical reaction between reinforcement and matrix should be avoided. Optimization is an applied science which explores the best values of the parameters of a problem that may take under specified conditions. The execution of an optimized stir casting technique yields relatively homogenous and fine microstructure which improves the addition of reinforcement material in the molten metal. The influence of SiC content, SiC size and secondary mechanical processing with different rolling reductions on the dry sliding wear characteristics of Al matrix composites has been assessed using a pin-on-disc wear test. The porosity and hardness of the resultant composites were also examined.

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Processing and compressive strength of Al–Li–SiCp composites fabricated by a compound billet technique

Cited by 34 publications

References 21 publications

Microstructure, mechanical properties and corrosion behaviour of Al–Si–Mg alloy matrix/zircon and alumina hybrid composite

Microstructure, mechanical properties and corrosion behaviour of Al–Si–Mg alloy matrix/zircon and alumina hybrid composite

Nano and hybrid aluminum based metal matrix composites: an overview

Searching for the superior solution to the population-based optimization problem: Processing of the wear resistant commercial AA6061 AMCs

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