Fabrication of LM25/SiO2 Metal Matrix Composite and Optimization of Wear Process Parameters Using Design of Experiment
Journal Title: Tribology in Industry - Year 2017, Vol 39, Issue 1
Abstract
LM25 aluminium alloy reinforced with 15 wt% SiO2 metal matrix composite was fabricated by liquid metallurgy technique. Microstructure of the fabricated composite specimen was observed using inverted metallurgical microscope and result showed uniform distribution of reinforcement particles in the matrix. The dry sliding wear behaviour of LM25/SiO2 composite was analyzed by conducting experiments using pin-on-disc tribometer. Taguchi’s method was used for designing the number of experiments and L16 orthogonal array was developed for wear analysis. Optimization of parameters like applied load (10 N, 20 N, 30 N, 40 N), sliding velocity (0.5 m/s, 1 m/s, 1.5 m/s, 2 m/s) and sliding distance (500 m, 1000 m, 1500 m, 2000 m) was done using Signal-to-Noise ratio analysis and Analysis of Variance. ‘smaller-the-better’ characteristic was chosen to analyze the dry sliding wear behaviour. Results found that load (69.17 %) had the highest impact on wear rate followed by sliding velocity (18.04 %) and sliding distance (1.5 %). The regression equation was developed and it was validated with confirmatory experiment. Scanning Electron Microscope analysis was done to observe the mechanism of the worn out composite specimen and found more delamination at the load of 40 N.
Authors and Affiliations
N. Radhika
Keywords
Related Articles
- EP ID EP228693
- DOI 10.24874/ti.2017.39.01.01
- Views 91
- Downloads 0
Experimental Investigation of Friction Effect on Liner Model Rolling Bearings for Large Diameter Thrust Bearing Design
Studying friction coefficient has significant importance, especially when dealing with high load and temperature applications that have frequent starting and stopping points. Towards that, two sets of angular contact Lin...
Investigation of Wear Coefficient of Manganese Phosphate Coated Tool Steel
In recent years the properties of the coating in terms of wear resistance is of paramount importance in order to prevent the formation of severe damages. In this study, Wear coefficient of uncoated, Manganese Phosphate c...
Experimental Determination of Contact Area
The main goal of this article is to experimentally evaluate the contact area and to compare the measured results with the different contact model theories. The experiment takes advantage of the electrical contact resisti...
Influence of Composition of Plant Oils on Their Tribological Properties
Sunflower, corn, rapeseed, olive, and linseed oils were used for investiga-tion. Their fatty-acid compositions have been evaluated by gas chroma-tography. The tribological properties were determined with a four-ball mach...
Squeezing Film Characteristics for Micropolar Fluid between Porous Parallel Stepped Plates
In this paper, the theoretical study of squeeze film characteristics between porous parallel stepped plates with non-Newtonian micropolar fluid is presented. The lubricant in the film region and also in the porous is mod...