scholarly journals Effect of Addition of Fine SiC Particles on the Dry Sliding Wear Behaviour of Extruded 2014 Al-Alloy

2013 ◽  
Vol 2013 ◽  
pp. 1-9
Author(s):  
Rupa Dasgupta ◽  
A. K. Jha ◽  
S. Das

Composites of 2014 alloy made by dispersing 10 vol.% of fine (20–50 µm) SiC particles using vortex method ensuring uniform distribution of SiC particles in the matrix have shown uniform distribution of SiC particles. Mechanical properties of the composites have also registered an improvement over the alloy. In an attempt to further improve the properties, the composites were subjected to hot extrusion of cylindrical rods along with the alloys under similar experimental conditions. A temperature range of 300–350°C and an extrusion ratio of 10 : 1 were maintained during the process. The extruded samples were compared for their mechanical properties, and improvement was noted. The mechanism of material failure from fractographic studies showed difference in behaviour between the alloy and composite. Dry sliding wear studies carried out on extruded specimens exhibited improved wear behaviour in composites over alloys as measured by volume loss and wear rate. Wear mechanism was studied from the worn surface and correlated with the wear performance. It was observed that the presence of SiC particles reduces the tendency of delamination and thus material removal from the wear surface.

2017 ◽  
Vol 71 (4) ◽  
pp. 813-822 ◽  
Author(s):  
Samson Jerold Samuel Chelladurai ◽  
Ramesh Arthanari ◽  
Nisaanthakumar Nithyanandam ◽  
Karthikeyan Rajendran ◽  
Kesavaprasad Kothandapani Radhakrishnan

Author(s):  
Devaraju Aruri ◽  
Adepu Kumar

In this experiment, SiC particles 20μm in average size were incorporated into the commercially Aluminum alloy 6061-T6 to form particulate metal matrix composite produced by using Friction Stir Processing (FSP). After the preparation of composite, the homogeneity of the particles distribution inside Al matrix has been observed by optical microscope (OM) and scanning electron microscope (SEM). Dry sliding wear test was conducted by using pin on disk equipment and Static immersion corrosion (SIC) resistance was evaluated in 3.5% NaCl aqueous solution at various regimes. From the results, it observed that the SiC particles are well distributed homogenously inside the nugget zone without any defects, obtained good bonding between the SiC particles and Al matrix alloy. The micro hardness of nugget zone with SiC particles is more compare to the as-received Al alloy due to the dispersion of SiC particles. It found that, exhibited superior dry sliding wear resistance and significant improvement SIC resistance of FSPed Aluminum alloy 6061-T6/SiCp composite is compare with as-received Al alloy.


2019 ◽  
Vol 18 ◽  
pp. 3445-3453
Author(s):  
S. Rathod ◽  
A. Raghubanshi ◽  
Yogesh Srivastava ◽  
Vinayaka R. Kiragi ◽  
D.P. Mondal

2017 ◽  
Vol 867 ◽  
pp. 10-18 ◽  
Author(s):  
Basavaraj Sajjan ◽  
L. Avinash ◽  
S. Varun ◽  
K.N. Varun Kumar ◽  
Adithya Parthasarathy

The aim is to study the mechanical property and dry sliding wear behaviour of Al7068/graphite composite with various weight fractions (5%, 10%, 15%) were prepared by liquid metallurgy route was investigated. The average particle size of graphite is 40 μm. In addition, Al7068 alloys were cast for comparison purposes. The alloys and composites were given a T6 heat treatment process (solution treatment at 540 oC, water quenching at room temperature and artificial ageing at 170 oC) .Microstructure, hardness and tensile properties of these composites were evaluated and compared with as-cast alloy and the composites without T6 heat treatment. In addition, tribological properties of these composites were evaluated using a Pin-on-Disc apparatus with different parameters (constant velocity of 2m/s and varying loads as follows 10N, 15N, 20N, 25N, 30N) .The microstructure of the composites shows homogenous distribution of graphite particles in the Al matrix except in the Al7068/15% graphite composite. The wear and mechanical properties of composites improve with increasing the weight fraction of graphite upto 10% and then decreases gradually. This study provides an alternative way to enhance the tribological behaviour of Al7068/graphite composite. The study also highlights the different contribution of different input process parameters (like: composition of Al-graphite, molding technique and particle size of reinforcement material) on wear properties of Al-graphite MMCs.


Wear ◽  
2007 ◽  
Vol 262 (3-4) ◽  
pp. 292-300 ◽  
Author(s):  
J. Rodríguez ◽  
P. Poza ◽  
M.A. Garrido ◽  
A. Rico

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