International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Issue: 07 | July -2017
p-ISSN: 2395-0072
www.irjet.net
VARIATION OF MECHANICAL PROPERTIES (TENSILE STRENGTH &MICROSTRUCTURE) OF Al6061/(Al2O3 AND FLY-ASH), HYBRID METAL MATRIX COMPOSITE PRODUCED BY STIR CASTING Mr. Himanshu Chauhan1, Mr. Irfan2, Mr. Ashish Chauhan3 1Department
of Mechanical Engineering, Ramanand Institute of Pharmacy,Management&Technology, Haridwar (India) 2Department of Mechanical Engineering, Maharishi VedVyasEngineeringCollege, Jagadhari (India) 3Department of Mechanical Engineering, Roorkee College of Engineering, Roorkee (India)
--------------------------------------------------------------------***--------------------------------------------------------------ABSTRACT - The present work deals with the variation of mechanical properties (Tensile strength & Microstructure) of Al6061/(Al2O3 and fly-ash), hybrid metal matrix composite using aluminum alloy Al 6061 as matrix and alumina, fly-ash as a reinforcing material prepared by stir casting technique. The alumina and fly-ash amounts varied as 10, 15, and 20 percent by volume. The mechanical properties like Tensile strength, microstructurehave been investigated. On addition by volume percent of alumina and fly-ash, the effect on mechanical properties has been studied. The properties tensile strength increases with Al2O3 and Fly-Ash. The change in these 1. properties is moderate for 10 percent addition of alumina and 2. fly-ash and marginal changes with 15 and 20 percent. 3.
greater quantity in the composite is termed as matrix. It encloses the other constituent and essentially protects them chemically and thermally. The normal view is that the properties of the matrix are improved on incorporating another constituent to produce a composite. The second constituent referred asreinforcing phase or reinforcement, as it enhances or reinforces the mechanical properties of the matrix. [1]
CLASSIFICATION OF COMPOSITE Composites are of following types: Polymer matrix composites. Ceramic matrix composites. Metal matrix composites
INTRODUCTION
1.POLYMER MATRIX COMPOSITES:
Humans have been using composite materials for thousands of years. We take the example of mud bricks. A cake of dried mud is easy to break by bending, which puts a tension force on edge, but makes a good strong wall, where all are compressive forces. A piece of straw, on the other hand, has high strength when you try to stretch it but almost none when you crumple it up. But if you embed pieces of straw in a block of mud and let it dry hard, the resulting mud brick resists both tearing and squeezing and makes an excellent building material. Put more technically, it has both good tensile and compressive strength.Another well-known composite is concrete. Here aggregate (small stones or gravel) is bound together by cement. Concrete has very good strength under compression force, and it can be made stronger under tension by adding metal rods, wires, mesh or cables to the composite (so creating reinforced concrete).A composite material is a system composed of a mixture or combination of two or more macro constituents of different form or material composition and that are essentially insoluble in each other. The constituent that is present in
Polymer-matrix composites consist of high-strength fibers, carbon glass, or other materials in a matrix of thermosetting or thermoplastic polymers. The fibers provide high strength at a very low weight, and the matrix holds the fibers in place. Throughout history, people have capitalized on the synergistic effect of combining dissimilar materials, first with adobe (twigs embedded in clay) and later with steelreinforcedconcrete. The human body, which embeds a skeleton of bones in flesh and muscles, is perhaps the most astounding example of combined dissimilar materials.
Š 2017, IRJET
|
Impact Factor value: 5.181
|
The most outstanding characteristic of polymer-matrix composites is the materials' ability to replace lightweight, high-strength metals or wood with an even lighter-weight and higher-strength alternative. In the transportation sector (aerospace, automobiles, and railroad cars), this property permits lower fuel consumption and/or increased payload; sporting goods and biomedical devices also place a premium on low weight and high strength. Polymer-matrix composites' resistance to corrosion is widening their appeal ISO 9001:2008 Certified Journal
|
Page 2407