International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May -2017
p-ISSN: 2395-0072
www.irjet.net
Study of Reinforcement of Silicon powder in Aluminum Matrix and it's Mechanical Properties Lalit R. Shendre1, Prof. B.C.Londhe2 1, PG Student, Department of Mechanical Engineering, SNDCOE &RC, Babulgaon, India 2 Asst. Prof. Department of Mechanical Engineering, SNDCOE &RC, Babulgaon, India
Abstract – To save the fuel for fuel for future generations and saving the weight of components the aluminium is emerged as an alternative to Iron and Iron alloy the alloys of Aluminium are widely used in automotive industries due to its lower costs and lower density. The alloying elements used are manganese, magnesium, copper, magnesium, silicon, and zinc. Surfaces of aluminim alloys have a brilliant luster in dry environment due to the formation of a shielding layer of aluminium oxide. Aluminium alloys of the 4xxx, 5xxx and 6xxx series, containing major eleental additives of Si and Mg, are now being used to replace steel panels in various automobile indstries. The present work focused on investigating the mechanical properties of aluminium alloy by increasing the percentage of silicon. The results showed that with the increasing of silicon content the solidification time increased, also a decreasing the liquids temperature. The tensile strength of AL alloy is increased with increased Si content up to 6 %. Key Words: Silicon, Aluminium, Aluminium Alloy
1. Introduction An alloy is a material having metallic properties and is formed by combination of two or more chemical element of which at least one is a metal. The metallic atoms must dominate in its chemical composition and the metallic bond in its crystal structure. Generally, alloys have different properties from those of the component elements. An alloy of a metal is made by combining it with one or more other metals or non-metals that often enhances its properties. For example, steel is stronger than iron its primary element. The Š 2017, IRJET
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physical properties, such as density and conductivity, of a alloy may not differ greatly from those of component elements, but engineering properties such as tensile strength and shear strength may be consider different from those of the constituent materials.[1] The tribological properties of Al-Si alloy are affected by shape and distribution of silicon particle, and addition of allowing elements such as nickel, Cu, magnesium, and zinc with a suitable heat treatment[1-4]. The excellent tribological properties Al-Si alloys have led to their extension uses in engineering applications, in plain bearings, internal combustion engine pistons, and cylinder liners [4, 5]. Silicon presence as a uniformly distributed fine particle in the matrix. However, when the primary silicon appears as coarse polyhedral particles, the strength properties decrease with increasing silicon content, but the hardness goes on increasing because of the increase in the number of silicon particles [7]. The hightemp. creep resistance of magnesium alloys was discussed, with special reference to Mg-Al and Mg-Y alloys. Mg-Al solid-solution alloys are superior to Al-Mg solid-solution alloys in terms of creep resistance. Manganese is also able to change the morphology of the iron-rich phase from to a more cubic form or to globules. These morphologies improve tensile strength, and ductility [8,9]. If the iron content exceeds 0.45 wt.%, it is reported that the manganese content should not be less than half of the iron [10]. Al alloys with silicon as a major alloying element are a class of alloys, which are the basis of many manufactured castings. This is due to the effects of Si in casting char, combined with other physical properties, such as make properties and corrosion [11]. Silicon is not only the most frequent impurity in pure aluminium, but also the most alloying element [12]. The influence of the Si content of the aluminium alloys on their wear ISO 9001:2008 Certified Journal
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