Tribological Properties of Al 7075 Composite Reinforced with ZrB2 Using Grey Relational Analysis

Abstract

In this work, the authors investigate the optimal tribological parameters of Al 7075 composite reinforced with ZrB 2 using Grey Relational Analysis (GRA). Initially, the composite specimens were prepared by the variation of reinforcement 5%, 10% and 15% using stir casting routing method. Further, the developed metal matrix composites are used to measure the wear and frictional properties on pin-on -disc testing apparatus. The input parameters such as, wt% of reinforcement (5%, 10% and 15%), load (4.92N, 9.81N and 14.72N) and the time required for conducting the wear test is (15 min. 30 min and 45 min). A Taguchi L 9 orthogonal array was designed for conducting the number of experiments. Based on the combination of number of experiments wear study has been conducted on the wear testing apparatus. Moreover, GRA was used for obtaining the best optimal input control parameters that gives minimum magnitude of wear and coeffi cient of friction (COF). Finally, the confi rmatory experiments are conducted and verifi ed with the Taguchi grey relational analysis. The results shows that the predicated optimal mean value is almost similar to the experimental value.

Abrasive Wear Mechanisms of S235JR, S355J2, C45, AISI 304, and Hardox 500 Steels Tested Using Garnet, Corundum and Carborundum Abrasives

“…The C45 steel was used as a reference material; therefore, the average mass loss for the reference and other examined samples were calculated as variables Z ww (2) and Z wb (3), respectively.…”

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many studies have been related to wear [1][2][3][4], primarily focusing on anti-wear surface treatment or new materials/coatings selection for anti-wear applications [5,6]. The effect of variable factors such as size, shape and type of abrasive, sliding distance, sliding velocity, the magnitude of applied load, ambient temperature, impact angle, abrasive feed rate etc., were studied on wear resistance of materials.

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