Suresh Bujari - Academia.edu (original) (raw)

Papers by Suresh Bujari

Microstructure and Tensile Behavior of B 4 C Particulates Reinforced Al-4.5% Cu Alloy Composites

American Journal of Materials Science, 2016

The work is carried out to investigate and study the microstructure and tensile behavior of B4C r... more The work is carried out to investigate and study the microstructure and tensile behavior of B4C reinforced Al-4.5% Cu alloy metal matrix composites. In the present work Al-4.5% Cu alloy was taken as the base matrix and B4C particulates as reinforcement material to prepare metal matrix composites by stir casting method. For metal matrix composites the reinforcement material was varied from 0 to 4 wt. % in steps of 2 wt. %. For each composite, the reinforcement particulates were preheated to a temperature of 300°C and dispersed into a vortex of molten Al-4.5% Cu alloy. The microstructural characterization was done using scanning electron microscope. Tensile properties like ultimate tensile strength and yield strength were evaluated as per ASTM standards. Further, scanning electron microphotographs revealed that there was uniform distribution of B4C particulates in Al-4.5% Cu alloy matrix. Ultimate tensile strength and yield strength increased as wt. % of B4C increased in the base matrix.

Metal matrix composites are widely used in automotive, marine and aerospace applications. These c... more Metal matrix composites are widely used in automotive, marine and aerospace applications. These composites exhibits superior properties like high strength to weight ratio, good wear resistance, and corrosion resistance and enhanced fatigue properties compared to monolithic materials. Several matrix materials like aluminium, magnesium, copper and titanium are widely used to prepare metal matrix composites. Reinforcements in the form of fibres, whiskers and particulates can be used into matrix. Most commonly used reinforcements are SiC, B 4 C, graphite, TiC and Al 2 O 3 in the form of particulates or fibres. Metal matrix composites are fabricated by stir casting, powder metallurgy, diffusion bonding or by in situ process. Many researchers have been investigated the mechanical and tribological properties of metal matrix composites. For industrial applications tribological properties like wear and friction plays very important role. S o, in this paper an attempt has been made to review ...

IOSR Journal of Mechanical and Civil Engineering

The work is carried out to investigate the microstructure and wear behavior of B 4 C reinforced A... more The work is carried out to investigate the microstructure and wear behavior of B 4 C reinforced Al-4.5% Cu alloy metal matrix composites. In the present work Al-4.5% Cu alloy was taken as the base matrix and B 4 C particulates as reinforcement material to prepare metal matrix composites by stir casting method. For metal matrix composites the reinforcement material was varied from 0 to 4 wt. % in steps of 2 wt. %. The wear resistance of metal matrix composites was studied by performing dry sliding wear test using a pin on disc apparatus. The experiments were conducted at a constant sliding speed of 300rpm and sliding distance of 4000m over a varying load of 0.5, 1 and 1.5Kg. Similarly experiments were conducted at a constant load of 1.5Kg and sliding distance of 4000m over a varying sliding speed of 200, 300 and 400rpm. The results showed that the wear resistance of Al-Cu-2%B 4 C and 4% B 4 C composites were better than the unreinforced alloy. The wear in terms of height loss found to increase with the load and sliding speed. To study the dominant sliding wear mechanism for various test conditions, the worn surfaces were analyzed using optical microscopy.

Microstructure and Tensile Behavior of B 4 C Particulates Reinforced Al-4.5% Cu Alloy Composites

The work is carried out to investigate and study the microstructure and tensile behavior of B4C r... more The work is carried out to investigate and study the microstructure and tensile behavior of B4C reinforced Al-4.5% Cu alloy metal matrix composites. In the present work Al-4.5% Cu alloy was taken as the base matrix and B4C particulates as reinforcement material to prepare metal matrix composites by stir casting method. For metal matrix composites the reinforcement material was varied from 0 to 4 wt. % in steps of 2 wt. %. For each composite, the reinforcement particulates were preheated to a temperature of 300°C and dispersed into a vortex of molten Al-4.5% Cu alloy. The microstructural characterization was done using scanning electron microscope. Tensile properties like ultimate tensile strength and yield strength were evaluated as per ASTM standards. Further, scanning electron microphotographs revealed that there was uniform distribution of B4C particulates in Al-4.5% Cu alloy matrix. Ultimate tensile strength and yield strength increased as wt. % of B4C increased in the base matrix.

Microstructure and Tensile Behavior of B 4 C Particulates Reinforced Al-4.5% Cu Alloy Composites

American Journal of Materials Science, 2016

The work is carried out to investigate and study the microstructure and tensile behavior of B4C r... more The work is carried out to investigate and study the microstructure and tensile behavior of B4C reinforced Al-4.5% Cu alloy metal matrix composites. In the present work Al-4.5% Cu alloy was taken as the base matrix and B4C particulates as reinforcement material to prepare metal matrix composites by stir casting method. For metal matrix composites the reinforcement material was varied from 0 to 4 wt. % in steps of 2 wt. %. For each composite, the reinforcement particulates were preheated to a temperature of 300°C and dispersed into a vortex of molten Al-4.5% Cu alloy. The microstructural characterization was done using scanning electron microscope. Tensile properties like ultimate tensile strength and yield strength were evaluated as per ASTM standards. Further, scanning electron microphotographs revealed that there was uniform distribution of B4C particulates in Al-4.5% Cu alloy matrix. Ultimate tensile strength and yield strength increased as wt. % of B4C increased in the base matrix.

Metal matrix composites are widely used in automotive, marine and aerospace applications. These c... more Metal matrix composites are widely used in automotive, marine and aerospace applications. These composites exhibits superior properties like high strength to weight ratio, good wear resistance, and corrosion resistance and enhanced fatigue properties compared to monolithic materials. Several matrix materials like aluminium, magnesium, copper and titanium are widely used to prepare metal matrix composites. Reinforcements in the form of fibres, whiskers and particulates can be used into matrix. Most commonly used reinforcements are SiC, B 4 C, graphite, TiC and Al 2 O 3 in the form of particulates or fibres. Metal matrix composites are fabricated by stir casting, powder metallurgy, diffusion bonding or by in situ process. Many researchers have been investigated the mechanical and tribological properties of metal matrix composites. For industrial applications tribological properties like wear and friction plays very important role. S o, in this paper an attempt has been made to review ...

IOSR Journal of Mechanical and Civil Engineering

The work is carried out to investigate the microstructure and wear behavior of B 4 C reinforced A... more The work is carried out to investigate the microstructure and wear behavior of B 4 C reinforced Al-4.5% Cu alloy metal matrix composites. In the present work Al-4.5% Cu alloy was taken as the base matrix and B 4 C particulates as reinforcement material to prepare metal matrix composites by stir casting method. For metal matrix composites the reinforcement material was varied from 0 to 4 wt. % in steps of 2 wt. %. The wear resistance of metal matrix composites was studied by performing dry sliding wear test using a pin on disc apparatus. The experiments were conducted at a constant sliding speed of 300rpm and sliding distance of 4000m over a varying load of 0.5, 1 and 1.5Kg. Similarly experiments were conducted at a constant load of 1.5Kg and sliding distance of 4000m over a varying sliding speed of 200, 300 and 400rpm. The results showed that the wear resistance of Al-Cu-2%B 4 C and 4% B 4 C composites were better than the unreinforced alloy. The wear in terms of height loss found to increase with the load and sliding speed. To study the dominant sliding wear mechanism for various test conditions, the worn surfaces were analyzed using optical microscopy.

Microstructure and Tensile Behavior of B 4 C Particulates Reinforced Al-4.5% Cu Alloy Composites

The work is carried out to investigate and study the microstructure and tensile behavior of B4C r... more The work is carried out to investigate and study the microstructure and tensile behavior of B4C reinforced Al-4.5% Cu alloy metal matrix composites. In the present work Al-4.5% Cu alloy was taken as the base matrix and B4C particulates as reinforcement material to prepare metal matrix composites by stir casting method. For metal matrix composites the reinforcement material was varied from 0 to 4 wt. % in steps of 2 wt. %. For each composite, the reinforcement particulates were preheated to a temperature of 300°C and dispersed into a vortex of molten Al-4.5% Cu alloy. The microstructural characterization was done using scanning electron microscope. Tensile properties like ultimate tensile strength and yield strength were evaluated as per ASTM standards. Further, scanning electron microphotographs revealed that there was uniform distribution of B4C particulates in Al-4.5% Cu alloy matrix. Ultimate tensile strength and yield strength increased as wt. % of B4C increased in the base matrix.