scholarly journals Investigations of the Tribological Performance of A390 Alloy Hybrid Aluminum Matrix Composite

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2524 ◽  
Author(s):  
Abhilash Edacherian ◽  
Ali Algahtani ◽  
Vineet Tirth
Keyword(s):  
Hybrid Composites ◽  
Aluminum Matrix ◽  
Particulate Composite ◽  
Tribological Performance ◽  
Processing Route ◽  
Dry Sliding Wear ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Soft Phase ◽  
A390 Alloy

Several challenges stand in the way of the production of metal matrix composites (MMCs) such as higher processing temperatures, particulate mixing, particulate–matrix interface bonding issues, and the ability to process into desired geometrical shapes. Although there are many studies showing composites with single particulate reinforcements, studies on composites with multiple reinforcing agents (hybrid composites) are found to be limited. Development of a hybrid particulate composite with optimized mechanical and tribological properties is very significant to suit modern engineering applications. In this study, Al–Si hypereutectic alloy (A390) was used as the matrix and silicon carbide (SiC), graphite (Gr), and molybdenum di-sulphide (MoS2) were used as particulates. Particulate volume (wt %) was varied and sample test castings were made using a squeeze casting process through a stir casting processing route. The evaluation of the mechanical testing indicates that the presence of both the hard phase (SiC) and the soft phase had distinct effect on the properties of the hybrid aluminum matrix composites (HAMCs). Composite samples were characterized to understand the performance and to meet the tribological applications. The 3D profilometry of the fractured surfaces revealed poor ductility and scanning electron microscopy fractography study indicated an intra-granular brittle fracture for HAMCs. Also, the dry sliding wear tests indicated that the newly developed HAMCs had better tribological performance compared to that of A390 alloy.

scholarly journals Investigations on the Tribological Performance of A390 Alloy Hybrid Aluminum Matrix Composite

2018 ◽  
Author(s):  
Abhilash Edacherian ◽  
Ali Algahtani ◽  
Vineet Tirth
Keyword(s):  
Hybrid Composites ◽  
Aluminum Matrix ◽  
Particulate Composite ◽  
Casting Process ◽  
Stir Casting ◽  
Aluminum Matrix Composite ◽  
Tribological Performance ◽  
Processing Route ◽  
Soft Phase ◽  
A390 Alloy

Several challenges stand in the way of production of Metal Matrix Composites (MMCs) such as higher processing temperatures, particulate mixing, particulate-matrix interface bonding issues and ability to process into desired geometrical shapes. Although there are many literatures showing composites with single particulate reinforcements, the studies on composites with multiple reinforcing agents (hybrid composites) are found to be limited. Development of a hybrid particulate composite with optimized mechanical and tribological properties is very significant to suit modern engineering applications. In this study, Al-Si hypereutectic alloy (A390) is used as the matrix and Silicon Carbide (SiC) and Graphite (Gr) and Molybdenum di-Sulphide (MoS2) are used as particulates. Particulate volume (wt%) is varied and sample test castings are made using squeeze casting process through stir casting processing route. The evaluation of mechanical properties indicates that presence of both the hard phase (SiC) and the soft phase has distinct effect on the properties of Hybrid Composite. Composite samples were characterized to understand the performance and to meet the tribological applications. Fractography study indicated an intra-granular brittle fracture for hybrid composites. Wear study shows that Hybrid MMCs has better tribological performance compared to that of A390 alloy.

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.

A comprehension review of dry sliding wear on aluminum matrix composites

2021 ◽  
Author(s):  
Hartaj Singh ◽  
Kapil Singh ◽  
Sachit Vardhan ◽  
Sanjay Mohan ◽  
Gagandeep Singh
Keyword(s):  
Sliding Wear ◽  
Aluminum Matrix ◽  
Dry Sliding Wear ◽  
Aluminum Matrix Composites ◽  
Dry Sliding ◽  
Matrix Composites

Synthesis and Characterization of TiO2 Reinforced Al6061 Composites

2017 ◽  
Vol 26 (1) ◽  
pp. 096369351702600 ◽  
Author(s):  
G B Veeresh Kumar ◽  
P S Shivakumar Gouda ◽  
R Pramod ◽  
C S P Rao
Keyword(s):  
Aluminum Matrix ◽  
Tribological Characteristics ◽  
Dry Sliding Wear ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Mechanical Characterisation ◽  
The Matrix ◽  
Mechanical And Tribological Characteristics ◽  
The Relationship

This article presents the investigative work carried out to study the relationship between the physical, mechanical and tribological characteristics of aluminum matrix composites reinforced with Titanium dioxide (TiO2). The powder metallurgy route of production was followed to produce the composites (Al6061 containing 3 wt% TiO2). The composites were subjected to sequences of physical, mechanical and tribological investigations. The outputs of the experiments done indicate that the increase in TiO2 fillers increase the density of the composite and the values accepted by the rule of mixtures. The result of mechanical characterisation of Al6061-TiO2 composites was noticed to increase significantly with higher TiO2 content in the matrix, with loss in ductility. The dry sliding wear studies of Al6061-TiO2 composite showed greater wear resistance than Al6061 matrix and the composite containing higher filler content displayed the superior physical, mechanical and tribological characteristics.

scholarly journals Effects of Hardness of Counterface on Dry Sliding Wear of Aluminum Matrix Composites against Steels

2012 ◽  
Vol 7 (1) ◽  
pp. 24-32 ◽  
Author(s):  
Toshiro Miyajima ◽  
Seiji Sasayama ◽  
Tomomi Honda ◽  
Yoshio Fuwa ◽  
Yoshiro Iwai
Keyword(s):  
Sliding Wear ◽  
Aluminum Matrix ◽  
Dry Sliding Wear ◽  
Aluminum Matrix Composites ◽  
Dry Sliding ◽  
Matrix Composites

Fabrication and Microstructure Study of Aluminum Matrix Composites Reinforced with SiC and B4C Particulates

2017 ◽  
Vol 16 ◽  
pp. 26-29 ◽  
Author(s):  
Gurpreet Singh Saini ◽  
Sanjeev Goyal
Keyword(s):  
Hybrid Composites ◽  
Aluminum Matrix ◽  
Base Material ◽  
Casting Process ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
The Matrix ◽  
Sic Composites ◽  
Xrd Patterns

In the present paper aluminum matrix composites were fabricated using base material AA6082-T6. SiC and B4C particulates were used as reinforcement to obtain hybrid and non-hybrid composites through the conventional stir casting process. AA6082-T6/SiC composites with 5, 10, 15 and 20 wt % of SiC; AA6082-T6/B4C composites with 5, 10, 15 and 20 wt % of B4C and AA6082-T6/(SiC+B4C) hybrid composites with 5, 10, 15 and 20 wt % of (SiC+B4C) taking equal fraction of SiC and B4C were made and the microstructure study was carried out. X-Ray diffraction (XRD) patterns revels the presence of reinforcement within the matrix along with some other compounds. The microstructure of the fabricated composites was examined with the help of Scanning electron microscope (SEM) and the micrographs revealed that the dispersion of reinforced particles was reasonably uniform at all weight percentages.

scholarly journals Boron Carbide (B4C) Reinforced Aluminum Matrix Composites (AMCs)

2019 ◽  
Vol 9 (1) ◽  
pp. 2194-2203 ◽  
Keyword(s):  
Boron Carbide ◽  
Hybrid Composites ◽  
Aluminum Matrix ◽  
Extrusion Process ◽  
Age Hardening ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Friction Stir ◽  
Surface Composites ◽  
Boron Carbide B4c

Aluminum matrix composites (AMCs) demonstrating a good combination of properties that are hard to acquire by a monolithic aluminum material. Since the last few decades, investigators have shown their keen interest to advance these materials for complex applications. Homogeneous reinforcement distribution, defect-free microstructure, and improved resultant properties depends on the fabrication method along with matrix and reinforcement materials and size. Two-step melt stirring technique and K2TiF6 flux enhanced the wettability and improve the particle distribution of boron carbide (B4C) in AMCs. The mechanical properties of the AMCs were enriched by either extrusion process or thermal treatment. Hybrid composites exhibited better characteristics than mono composites. Surface composites manufactured by incorporation of reinforcement in the surface layer; offer good surface properties without losing toughness and ductility. The B4C-Al interfacial reactions produce different precipitates in AMCs and damaged the composite's age-hardening ability. B4C reinforced friction stir processed surface composites exhibits refined structure and better properties compared to the aluminum matrix. The strength, hardness, and wear resistance of AMCs increased with rising fraction and reducing the size of B4C up to a certain level. Wear rate increases with rising applied load, sliding time and speed. A review of effect of B4C reinforcement on different properties of mono and hybrid AMCs with summarized results attained and concluded by different investigators is presented in this paper to help researchers in the field. At the end of this paper a position given to conclusions and future directions.

scholarly journals Tribological Behavior and Hardness Properties of Heat Treated Al 7075-Beryl-Graphene Hybrid Metal Matrix Composites

2019 ◽  
Vol 8 (3) ◽  
pp. 4808-4815
Keyword(s):  
Heat Treatment ◽  
Wear Rate ◽  
Hybrid Composites ◽  
Aluminum Matrix ◽  
Weight Ratio ◽  
Aluminum Matrix Composites ◽  
Test Machine ◽  
Matrix Composites ◽  
Heat Treated ◽  
Low Wear

The emerging technologies and trends of the present generation require downsizing the unwieldy structures to lightweight structures. Aluminum matrix composites are tailored candidate materials for aerospace applications due to their outstanding greater strength to weight ratio and low wear rate. In this study, Al7075 alloy-Beryl-Graphene hybrid composites are developed by using stir casting process. Graphene weight percentage was varied from 0 wt. % to 2 wt. % in steps of 0.5 wt. %. Whereas for Beryl 6 wt. % is used thorough out the study. The casted specimens were heat-treated at T6 solutionizing temperature of 530±5oC for 8 hours. After the heat treatment the specimen are quenched in boiling Water and Ice. The microstructure of the newly developed hybrid MMCs has been investigated by TEM and SEM. The microstructural study reveals the uniform distribution of reinforcement into matrix materials. The hardness and wear behavior of matrix and hybrid composites before and after heat treatment examined by Brinell hardness test and Pin-on-disc test machine respectively. The heat-treated Al7075-Beryl-Graphene hybrid composites significantly improved the hardness and low wear rate compared to base matrix Al7075 alloy

Using explosive energy for processing aluminum matrix composites

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-119-Pr9-122
Author(s):  
V. Popov ◽  
V. Gulbin ◽  
E. Sungurov
Keyword(s):  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Explosive Energy
Sign in / Sign up

Export Citation Format

Share Document