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Papers by SOURABH BHASKAR

Research paper thumbnail of Application of preference selection index method in performance (mechanical properties and sliding wear) based ranking of AA2024‐Al 2 O 3 /SiC alloy composites

Materialwissenschaft und Werkstofftechnik

Research paper thumbnail of Effect of Graphite Particulates on Sliding Wear Performance of Hybrid AA2024 Alloy Composites

Journal of Materials Engineering and Performance, 2021

In this work, hybrid AA2024—Graphite (0-6 wt.% @ 2%)/SiC (2 wt.%)/Si3N4 (2 wt.%) alloy composites... more In this work, hybrid AA2024—Graphite (0-6 wt.% @ 2%)/SiC (2 wt.%)/Si3N4 (2 wt.%) alloy composites were fabricated via semi-automatic stir casting method. The specimens of alloy composites compositions were analyzed to examine the effect of graphite phase reinforcement on the (1) physical and mechanical performance, (2) dry sliding wear/friction performance following ASTM G99 on Pin-on-Disc tribometer. A significant improvement in the physical, mechanical, and wear/friction performance was observed with graphite reinforcing phase. The surface morphology studies revealed the presence of tribo-layer or lubricating layer indicating the presence of solid lubricant graphite. The thickness of tribo-layer enhances with graphite content and accounts for wear/friction performance of hybrid alloy composites.

Research paper thumbnail of Parametric Optimization and Ranking Analysis of Hybrid AA2024–SiC/Si3N4 Alloy Composites Based on Mechanical and Sliding Wear Performance

Journal of Bio- and Tribo-Corrosion

In this research work, hybrid AA2024-SiC/Si 3 N 4 alloy composites were designed and prepared thr... more In this research work, hybrid AA2024-SiC/Si 3 N 4 alloy composites were designed and prepared through a semi-automatic stir casting route, following industrial procedure. The ceramic (SiC/Si 3 N 4) particulates were reinforced in the complementary manner (0-4 wt% @ step of 1%), leading to five composite specimens, namely CN04, CN13, CN22, CN31, and CN40. The samples of each composition were analyzed for their physical, mechanical, thermal conductivity, fracture toughness, and tribological behavior (steady-state sliding wear analysis) adopting ASTM standards. The Taguchi methodology was applied to optimize experimental simulations and input operating variables (like sliding velocity, sliding distance, normal load, composition, and environment temperature) with ANOVA. Worn-out surface micrograph studies were performed using a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) to understand wear mechanisms and elemental presence/dispersion over the surface. Further, a decision-making tool like a hybrid AHP-TOPSIS method was applied to rank the hybrid alloy composites based upon performance measures. The hybrid alloy composites shows some peculiar properties like density ~ 2.495-2.772 g/cc, voids content ~ 0.63-10.49%, Rockwell hardness (HRB) ~ 76.6 to 92.8 HRB, tensile strength ~ 191-277 MPa, flexural strength ~ 291-419 MPa, Impact strength ~ 24-100 J, thermal conductivity ~ 141-152 W/mK, fracture toughness ~ 6-41 MPa √m. Taguchi's factorial design of the experiment shows an error of 3.5% for the S/N ratio of wear rate that validates the robustness of the experiential design. The wear rate and friction coefficient improve with sliding velocity irrespective of composition across the formulation. Further, it has been found that CN22 hybrid alloy composite having an equal amount of both ceramics tends to optimize the overall physical and mechanical properties along with steady-state sliding behavior, which is in-tune-with the results of ranking obtained hybrid AHP-TOPSIS method. The sensitivity analysis of performance criteria gives robust/stable ranking order whenever the criteria's weight varies within ± (10-15)%.

Research paper thumbnail of Effect of Si3N4 Ceramic Particulates on Mechanical, Thermal, Thermo-Mechanical and Sliding Wear Performance of AA2024 Alloy Composites

Research paper thumbnail of Tribological characteristics of hybrid AA2024 alloy composite reinforced with AlN and Gr particulates

Materials Today: Proceedings

Research paper thumbnail of Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

REVIEWS ON ADVANCED MATERIALS SCIENCE

This review manuscript highlights the effects of various ceramic particulates on different aspect... more This review manuscript highlights the effects of various ceramic particulates on different aspects like tribo-logical (sliding wear), mechanical and thermal behaviour etc. of aluminium alloy composites, across various operating parameters like normal load (N), sliding velocity (m/s), sliding distance (m), temperature (°C), reinforcement weight percentage. It also discusses different fabrication techniques of such composites as reported by various scholars. Such advanced alloyed-composites find frequent applications in automotives, military, marine, structural, etc. applications, where tribo-logical phenomenon plays a dominant role. The material scientists world-wide are actively engage in improving life of such components by enhancing their mechanical, physical, chemical etc. properties along with improvement in wear resistance in a cost-effective manner. This overall enhances the working efficiency of the component in required applications. Single or binary or hybrid ceramic reinfo...

Research paper thumbnail of Microstructure, Thermal, Thermo-mechanical and Fracture Analyses of Hybrid AA2024-SiC Alloy Composites

Transactions of the Indian Institute of Metals

Research paper thumbnail of A review on tribological and mechanical properties of Al alloy composites

Materials Today: Proceedings

Research paper thumbnail of Application of Hybrid AHP-TOPSIS Technique in Analyzing Material Performance of Silicon Carbide Ceramic Particulate Reinforced AA2024 Alloy Composite

Research paper thumbnail of Silicon Carbide Ceramic Particulate Reinforced AA2024 Alloy Composite - Part I: Evaluation of Mechanical and Sliding Tribology Performance

Research paper thumbnail of Application of preference selection index method in performance (mechanical properties and sliding wear) based ranking of AA2024‐Al 2 O 3 /SiC alloy composites

Materialwissenschaft und Werkstofftechnik

Research paper thumbnail of Effect of Graphite Particulates on Sliding Wear Performance of Hybrid AA2024 Alloy Composites

Journal of Materials Engineering and Performance, 2021

In this work, hybrid AA2024—Graphite (0-6 wt.% @ 2%)/SiC (2 wt.%)/Si3N4 (2 wt.%) alloy composites... more In this work, hybrid AA2024—Graphite (0-6 wt.% @ 2%)/SiC (2 wt.%)/Si3N4 (2 wt.%) alloy composites were fabricated via semi-automatic stir casting method. The specimens of alloy composites compositions were analyzed to examine the effect of graphite phase reinforcement on the (1) physical and mechanical performance, (2) dry sliding wear/friction performance following ASTM G99 on Pin-on-Disc tribometer. A significant improvement in the physical, mechanical, and wear/friction performance was observed with graphite reinforcing phase. The surface morphology studies revealed the presence of tribo-layer or lubricating layer indicating the presence of solid lubricant graphite. The thickness of tribo-layer enhances with graphite content and accounts for wear/friction performance of hybrid alloy composites.

Research paper thumbnail of Parametric Optimization and Ranking Analysis of Hybrid AA2024–SiC/Si3N4 Alloy Composites Based on Mechanical and Sliding Wear Performance

Journal of Bio- and Tribo-Corrosion

In this research work, hybrid AA2024-SiC/Si 3 N 4 alloy composites were designed and prepared thr... more In this research work, hybrid AA2024-SiC/Si 3 N 4 alloy composites were designed and prepared through a semi-automatic stir casting route, following industrial procedure. The ceramic (SiC/Si 3 N 4) particulates were reinforced in the complementary manner (0-4 wt% @ step of 1%), leading to five composite specimens, namely CN04, CN13, CN22, CN31, and CN40. The samples of each composition were analyzed for their physical, mechanical, thermal conductivity, fracture toughness, and tribological behavior (steady-state sliding wear analysis) adopting ASTM standards. The Taguchi methodology was applied to optimize experimental simulations and input operating variables (like sliding velocity, sliding distance, normal load, composition, and environment temperature) with ANOVA. Worn-out surface micrograph studies were performed using a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) to understand wear mechanisms and elemental presence/dispersion over the surface. Further, a decision-making tool like a hybrid AHP-TOPSIS method was applied to rank the hybrid alloy composites based upon performance measures. The hybrid alloy composites shows some peculiar properties like density ~ 2.495-2.772 g/cc, voids content ~ 0.63-10.49%, Rockwell hardness (HRB) ~ 76.6 to 92.8 HRB, tensile strength ~ 191-277 MPa, flexural strength ~ 291-419 MPa, Impact strength ~ 24-100 J, thermal conductivity ~ 141-152 W/mK, fracture toughness ~ 6-41 MPa √m. Taguchi's factorial design of the experiment shows an error of 3.5% for the S/N ratio of wear rate that validates the robustness of the experiential design. The wear rate and friction coefficient improve with sliding velocity irrespective of composition across the formulation. Further, it has been found that CN22 hybrid alloy composite having an equal amount of both ceramics tends to optimize the overall physical and mechanical properties along with steady-state sliding behavior, which is in-tune-with the results of ranking obtained hybrid AHP-TOPSIS method. The sensitivity analysis of performance criteria gives robust/stable ranking order whenever the criteria's weight varies within ± (10-15)%.

Research paper thumbnail of Effect of Si3N4 Ceramic Particulates on Mechanical, Thermal, Thermo-Mechanical and Sliding Wear Performance of AA2024 Alloy Composites

Research paper thumbnail of Tribological characteristics of hybrid AA2024 alloy composite reinforced with AlN and Gr particulates

Materials Today: Proceedings

Research paper thumbnail of Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

REVIEWS ON ADVANCED MATERIALS SCIENCE

This review manuscript highlights the effects of various ceramic particulates on different aspect... more This review manuscript highlights the effects of various ceramic particulates on different aspects like tribo-logical (sliding wear), mechanical and thermal behaviour etc. of aluminium alloy composites, across various operating parameters like normal load (N), sliding velocity (m/s), sliding distance (m), temperature (°C), reinforcement weight percentage. It also discusses different fabrication techniques of such composites as reported by various scholars. Such advanced alloyed-composites find frequent applications in automotives, military, marine, structural, etc. applications, where tribo-logical phenomenon plays a dominant role. The material scientists world-wide are actively engage in improving life of such components by enhancing their mechanical, physical, chemical etc. properties along with improvement in wear resistance in a cost-effective manner. This overall enhances the working efficiency of the component in required applications. Single or binary or hybrid ceramic reinfo...

Research paper thumbnail of Microstructure, Thermal, Thermo-mechanical and Fracture Analyses of Hybrid AA2024-SiC Alloy Composites

Transactions of the Indian Institute of Metals

Research paper thumbnail of A review on tribological and mechanical properties of Al alloy composites

Materials Today: Proceedings

Research paper thumbnail of Application of Hybrid AHP-TOPSIS Technique in Analyzing Material Performance of Silicon Carbide Ceramic Particulate Reinforced AA2024 Alloy Composite

Research paper thumbnail of Silicon Carbide Ceramic Particulate Reinforced AA2024 Alloy Composite - Part I: Evaluation of Mechanical and Sliding Tribology Performance