Effect of Ageing on Dry Sliding Wear Behaviour of Al-MMC for Disc Brake
Journal Title: Tribology in Industry - Year 2014, Vol 36, Issue 1
Abstract
The present investigation shows the wear behaviour of as-cast and heat treated, A356 aluminium alloy reinforced with SiC and Graphite particles subjected to different ageing durations. The liquid metallurgy technique was used to fabricate the composites. The reinforcement content was varied from 0 to 9 % by weight in steps of 3 % of SiCp and fixed quantity of 3 % by weight of graphite particles. The castings were machined to ASTM standard and T6 heat treatment was carried out at 540 0C ± 5 for 12 hrs and quenched at 60 0C in water. All the specimens were artificially aged at different durations of 3, 6, 9 and 12 hrs at a temperature of 155 0C ± 5. The wear tests were performed for alloy and composites by varying load, speed and sliding distance for both aged and as-cast conditions by using a pin on disc wear testing machine. The results reveal that the wear rate of composites was less than that of non-reinforced alloy. It was found that the wear resistances of A356-9 SiCp-3 Gr composites aged at 9 hrs showed better wear resistance compared with other samples. However in both aged and as-cast materials, the wear rate was increased with the increase in load, speed and sliding distance. The tested samples were examined and analyzed using Scanning Electron Microscope (SEM) and X-ray energy-dispersive spectrometry (EDX).
Authors and Affiliations
B. M. Viswanatha , M. P. Kumar , S. Basavarajappa , T. S. Kiran
Keywords
Related Articles
- EP ID EP94003
- DOI -
- Views 89
- Downloads 0
Wear Resistance of Nano Alumina Containing SiO2-B2O3-Na2O Glass-Ceramic on Steel Substrate
The experimental study has been carried out to investigate the tribological properties of nano Alumina reinforced glass-ceramic enamel. The mixtures of (5, 10, 15 wt.%) nano alumina and glass powders have been air spraye...
A Comparative Study on Wear Properties of As Cast, Cast Aged and Forge Aged A356 Alloy with Addition of Grain Refiner and/or Modifier
In the present work, a comparative wear behavior study of three categories of materials viz, as cast, cast aged (casting followed by T6) and forge aged (forging followed by T6) has been investigated. Neither melt treatme...
Dynamic Simulation of a Mobile Manipulator with Joint Friction
Mission criticality in disaster search and rescue robotics highlights the requirement of specialized equipment. Specialized manipulators that can be mounted on existing mobile platforms can improve rescue process. Howeve...
Ejection Performance of Coated Core Pins Intended for Application on High Pressure Die Casting Tools for Aluminium Alloys Processing
In high pressure die casting (HPDC) process of aluminium alloys cast alloy soldering severely damages tool surfaces. It hampers casting ejection, reduces the casting quality and decreases the overall production efficienc...
Selection of the Most Appropriate Technology of Reparatory Hard Facing of Working Parts on Universal Construction Machinery
The aim of this work is to analyse the possibility to increase the service life of working parts on construction machinery exposed to intensive wear, such as steel blades of the rotary device for roadside vegetation main...