IDL - International Digital Library Of Technology & Research Volume 1, Issue 3, Mar 2017
Available at: www.dbpublications.org
International e-Journal For Technology And Research-2017
STUDIES OF MICROSTRUCTURE, MECHANICAL AND TRIBOLOGICAL PROPERTIES OF AL-2Cu-2.6Mg-7.8Zn MMCs Mohammed Talib Syed 1, N SAI Hemanth2, K S Prabhu3, Avinash L4 Shiv Pratap5 UG Student, Department of Mechanical Engineering, NMIT Bangalore, Karnataka, India 1, 2 Assistant Professor, Department of Mechanical Engineering, NMIT Bangalore, Karnataka, India 3, 4, 5 Bangalore, India
Abstract:
The aim is to study the mechanical, tribological property and wear behavior of Al7068 alloy/alumina composite with various weight fractions (3%, 5%, 7%) were prepared by stir casting method. In addition, Al7068 were cast for comparison purposes. Microstructure, hardness and tensile properties of these composites were evaluated and compared with as-cast alloy and the composites. In addition, tribological properties of these composites were also evaluated. The wear and mechanical properties of composites improve with increasing the weight fraction of Alumina and then decreases gradually. This study provides an alternative way to enhance the tribological behavior of Al7068 alloy/Alumina composite. The study also highlights the different contribution of different input process parameters (like: composition of Al7068 alloy/Alumina and particle size of reinforcement material) on wear properties of Al7068 alloy/Alumina MMCs. Keywords: Al 7068 alloy, matrix, Alumina, Composite, tribological, wear
1. INTRODUCTION IDL - International Digital Library
Today in Modern day technology there is an ever increasing demand in materials which achieves good combination of strength, stiffness, toughness and density. But the conventional monolithic materials have limitations in achieving these combinations. To overcome these shortcomings and to meet the ever increasing demand of modern day technology, composites are most promising materials of recent interest. A broad definition for a composite is: a combination of two components separated by a distinct interface, thermodynamically irreversible, and has properties which can be „engineered‟ using composite principles. Automotive, medical and sport equipment industries pushed advances in materials further to introduce new generation materials particularly having low density and very light weight with high strength, hardness and stiffness. Since 1960‟s there has been an everincreasing demand for newer, stronger, stiffer and yet lighter-weight materials in fields such as aerospace, transportation, automobile and construction sectors. With the vast and rapid progress in science and technology, modern industry has introduced a new generation of composite materials having low density and very light weight with high strength, hardness and stiffness to meet the current needs of modern 1|P a g e
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