scholarly journals Frictional property evaluation of aluminium alloy based metal matrix composites under dry braking condition in pin—on—disc system

2019 ◽  
Vol 7 (1) ◽  
pp. 016509
Author(s):  
Ashwath P ◽  
Joel J ◽  
Jeyapandiarajan P ◽  
Anthony Xavior M ◽  
Rajendran R
Keyword(s):  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Frictional Property ◽  
Matrix Composites ◽  
Property Evaluation ◽  
Pin On Disc

Tribological and Mechanical Behavior Study of Al6061-TiB2 Metal Matrix Composites Using Stir Casting

2014 ◽  
Vol 984-985 ◽  
pp. 200-206 ◽  
Author(s):  
S. Suresh ◽  
N. Shenbaga Vinayaga Moorthi ◽  
C. Emmy Prema
Keyword(s):  
Wear Resistance ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
High Energy ◽  
Matrix Composites ◽  
Casting Method ◽  
Behavior Study ◽  
Pin On Disc

Metal matrix composites, produced by stir casting method, have more advantages when compared to other methods. Aluminium alloy Al6061 was reinforced with various percentages of TiB2 particles by using high energy stir casting method. The characterization was performed through EDS and SEM. The mechanical behaviours like hardness, tensile and wear were investigated. Wear experiments were conducted by using a pin-on-disc wear tester at varying load to evaluate the tribological property of Al6061-TiB2 composite. The wear mechanism was studied through SEM. In this study revealed that the addition of TiB2 improves the wear resistance of aluminium composites. The results showed that the mechanical properties, such as tensile strength, wear resistance and hardness increased by the percentage of TiB2 present in the samples when compared with base aluminium alloy.

scholarly journals Mechanical and Microstructural Characterization of Friction Stir Welded SiC and B4C Reinforced Aluminium Alloy AA6061 Metal Matrix Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3110
Author(s):  
Kaveripakkam Suban Ashraff Ali ◽  
Vinayagam Mohanavel ◽  
Subbiah Arungalai Vendan ◽  
Manickam Ravichandran ◽  
Anshul Yadav ◽  
...  
Keyword(s):  
Wear Rate ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Weld Zone ◽  
Base Material ◽  
Matrix Composites ◽  
Wear Properties ◽  
Friction Stir ◽  
Behavioural Aspects

This study focuses on the properties and process parameters dictating behavioural aspects of friction stir welded Aluminium Alloy AA6061 metal matrix composites reinforced with varying percentages of SiC and B4C. The joint properties in terms of mechanical strength, microstructural integrity and quality were examined. The weld reveals grain refinement and uniform distribution of reinforced particles in the joint region leading to improved strength compared to other joints of varying base material compositions. The tensile properties of the friction stir welded Al-MMCs improved after reinforcement with SiC and B4C. The maximum ultimate tensile stress was around 172.8 ± 1.9 MPa for composite with 10% SiC and 3% B4C reinforcement. The percentage elongation decreased as the percentage of SiC decreases and B4C increases. The hardness of the Al-MMCs improved considerably by adding reinforcement and subsequent thermal action during the FSW process, indicating an optimal increase as it eliminates brittleness. It was seen that higher SiC content contributes to higher strength, improved wear properties and hardness. The wear rate was as high as 12 ± 0.9 g/s for 10% SiC reinforcement and 30 N load. The wear rate reduced for lower values of load and increased with B4C reinforcement. The microstructural examination at the joints reveals the flow of plasticized metal from advancing to the retreating side. The formation of onion rings in the weld zone was due to the cylindrical FSW rotating tool material impression during the stirring action. Alterations in chemical properties are negligible, thereby retaining the original characteristics of the materials post welding. No major cracks or pores were observed during the non-destructive testing process that established good quality of the weld. The results are indicated improvement in mechanical and microstructural properties of the weld.

Mechanical Properties of Stirred SiC Reinforced Aluminium Alloy: Stir Casting with Different Composition of SiC, Blade Angle and Stirring Speed

2012 ◽  
Vol 622-623 ◽  
pp. 1335-1339 ◽  
Author(s):  
Azrol Jailani ◽  
Siti Mariam Tajuddin
Keyword(s):  
Mechanical Properties ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Particle Distribution ◽  
Mechanical Test ◽  
Metallographic Analysis ◽  
Matrix Composites ◽  
Blade Angle ◽  
Sic Reinforcement

Discontinuously reinforced cast metal-matrix composites are increasingly attracting the attention of aerospace, automotive and consumer goods industries. In this study, SiC particle reinforced aluminium alloy is selected to produce metal matrix composites (MMC) using different of parameters blade angle and stirring speed and composition of SiC reinforcement. Mechanical test, metallographic analysis and fracture analysis will be conducted to investigate mechanical properties of material and to observe particle distribution of SiC reinforcement and fracture properties respectively with varies angles and stirring speed of impellers and different composition of SiC reinforcement. Metallographic analysis on composition records at low speed, there exist a particle collection and gas existence on the specimen. At blade angles of 300, increasing on stirring speed and composition of SiC reinforcement may result better of particle distribution. For mechanical test, different composition of SiC reinforcement, blade angle and stirring speed will be affecting a mechanical property of material. The result of the experiment showed at blade angle 300, stirring speed 100rpm and 10% composition of SiC reinforcement give better result of hardness, ultimate strength, energy absorption, microstructure and fracture of composite. For this study, it proved that at the lower blade angle and the increment on stirring speed and composition of SiC reinforcement give a better result on particle distribution of SiC reinforcement, fracture and mechanical properties for A1-MMC.

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