NDLI: The influence of alumina on mechanical and tribological characteristics of graphite particle reinforced hybrid Al-MMC

Content Provider	Springer Nature Link
Author	Premnath, A. Arun Alwarsamy, T. Rajmohan, T. Prabhu, R.
Copyright Year	2014
Abstract	We consider the influence of alumina (Al$_{2}$O$_{3}$) particles on mechanical and tribological properties of aluminum hybrid metal matrix composites (MMC). Various weight fraction of Al$_{2}$O$_{3}$ (5, 10 and 15%) and constant weight fraction of graphite (5%) were used to fabricate composites by stir casting method. The effect of Al$_{2}$O$_{3}$ content on hardness, density and specific wear rate is evaluated. A wear test was performed using central composite design matrix on a pin-on disc apparatus at room temperature for constant sliding distance of 1000 m. The sliding speed, load and weight fraction of Al$_{2}$O$_{3}$ were the process variables. The results show that the hardness and density increase with increase in Al$_{2}$O$_{3}$ content. From the analysis of variance (ANOVA), load is the dominant factor that affects the specific wear rate of hybrid composites followed by speed and weight fraction of Al$_{2}$O$_{3}$. Based on desirability approach, the improvement in the wear resistance of the composites became more prominent at high speed, high load and high weight fraction of Al$_{2}$O$_{3}$. The worn surface of the pin was examined using scanning electron microscope (SEM) which indicates that the wear mechanism of composites is mostly abrasive wear followed by oxide wear.
Starting Page	4737
Ending Page	4744
Page Count	8
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	28
Issue Number	11
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2015-01-22
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Density Hardness Hybrid composites Scanning electron microscope Specific wear rate Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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