scholarly journals Study on Dry Sliding Wear and Friction Behaviour of Al7068/Si3N4/BN Hybrid Composites

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6560
Author(s):  
Kumar Subramanian ◽  
Sakthivel Murugesan ◽  
Dhanesh G. Mohan ◽  
Jacek Tomków
Keyword(s):  
Wear Rate ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Hybrid Composites ◽  
Tribological Performance ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Aluminium Metal

Hybrid aluminium metal matrix composites have the potential to replace single reinforced aluminium metal matrix composites due to improved properties. Moreover, tribological performance is critical for these composites, as they have extensive application areas, such as the automotive, aerospace, marine and defence industries. The present work aims to establish the tribological characteristics of Al7068/Si3N4/BN hybrid metal matrix composites prepared by stir casting route and studied using a pin-on-disc apparatus under dry sliding conditions. The hybrid composite samples were prepared at various weight percentages (0, 5, 10) of Si3N4 and BN particles. To investigate the tribological performance of the prepared composites, the wear experiments were conducted by varying the load (20, 40 and 60 N), sliding velocity (1.5, 2.5 and 3.5 m/s) and sliding distance (500, 1000 and 1500 m). Wear experimental runs were carried out based on the plan of experiments proposed by Taguchi. The minimum wear rate was found with the composite material reinforced with 10 wt. % of Si3N4 and 5 wt. % of BN. Analysis of Variance (ANOVA) was employed to analyse the effect of process parameters on wear rate and coefficient of friction (COF). The ANOVA test revealed that the weight fraction of Si3N4 has more of a contribution percentage (36.60%) on wear rate, and load has more of a contribution percentage (29.73%) on COF. The worn-out surface of the wear test specimens was studied using its corresponding SEM micrograph and correlated with the dry sliding wear experiment results.

Dry sliding wear of garnet reinforced zinc/aluminium metal matrix composites

Wear ◽  
2001 ◽  
Vol 251 (1-12) ◽  
pp. 1408-1413 ◽  
Author(s):  
G. Ranganath ◽  
S.C. Sharma ◽  
M. Krishna
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Aluminium Metal

Taguchi Grey Relational Analysis of Dry Sliding Wear Behaviour of Annealed AA7075-TiC Metal Matrix Composites

2014 ◽  
Vol 541-542 ◽  
pp. 258-262 ◽  
Author(s):  
S. Baskaran ◽  
V. Anandakrishnan ◽  
Muthukannan Durai Selvam ◽  
S. Raghuraman ◽  
V.M. Illayaraja Muthaiyaa
Keyword(s):  
Wear Rate ◽  
Metal Matrix Composites ◽  
Grey Relational Analysis ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Relational Analysis ◽  
Grey Relational

The optimization of dry sliding wear process parameters of in-situ aluminium based metal matrix composites to obtain multiple objectives to minimize wear rate, specific wear rate, co-efficient of friction and maximize wear resistance was attempted by Taguchi Grey Relational Analysis. Moreover to identify the significance of the parameters, a statistical analysis was performed using analysis of variance. Based on the analysis, the sliding speed was identified as the major contributor with 71.41% followed by percentage of reinforcement with 8.13% and other parameters load and sliding distance are found to be insignificant. The optimum parameters identified by the Grey Relational Analysis are verified through experimental confirmation test.

INVESTIGATION OF DRY SLIDING WEAR BEHAVIOR OF AL 7075–(SiC/TiC) HYBRID METAL MATRIX COMPOSITES

2021 ◽  
pp. 2150065
Author(s):  
R GUKENDRAN ◽  
M SAMBATHKUMAR ◽  
KSK SASIKUMAR ◽  
K PONAPPA ◽  
S GOPAL
Keyword(s):  
Wear Rate ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
High Wear Resistance ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Hybrid Metal Matrix Composites ◽  
Al 7075

The main objective of present work focuses to investigate the tribological behavior of Al 7075 hybrid metal matrix composite. Al 7075 metal matrix composites has many potential applications especially in automotive and aerospace industries, due to their light weight to strength ratio and high wear resistance. The composite is fabricated using two step stir casting process by varying 5% to 15% volume fractions of Silicon Carbide and Titanium Carbide. Optical microstructure showed reinforcement distribution into Al 7075 matrix. The wear and frictional properties of the hybrid metal matrix composites was studied by performing dry sliding wear test using a pin-on-disc wear tester. Tribological behaviors were examined by applying different normal loads of 10[Formula: see text]N, 20[Formula: see text]N, 30[Formula: see text]N with different sliding velocities (1[Formula: see text]m/s, 2[Formula: see text]m/s, 3[Formula: see text]m/s) at room temperature without lubrication. Wear rate and coefficient of friction for different normal load and sliding velocities were plotted and studied. The micro hardness value of AST15 was higher by 18.8% than the AST0 Composites. The wear rate prediction indicated the wear rate for AST15 as [Formula: see text][Formula: see text]mm3/m as compared to AST0 which was [Formula: see text][Formula: see text]mm3/m. The wear rate increases with the increase in load and sliding velocities. Scanning electron microscopy micrographs of the worn surface are used to predict the nature of the wear mechanism.

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