0000000000673558

AUTHOR

Harikrishna Rana

showing 4 related works from this author

A Comparative Study of Mechanical and Microstructural Behavior for Metal Active Gas and Friction Stir Welded Micro-Alloyed Structural Steel

2022

Manufacturing tiny components into gigantic structures seems unimaginable without welding connections, whether it is for materials, parts, structures, or equipment. In the recent competitive market scenario, manufacturing industries are desperately looking for a viable alternative to fusion-based conventional material joining technologies, to improve upon cost-effectiveness along with performance. The present investigation is to evaluate the performance of structural steel thick plate joints prepared by advanced solid-state friction stir welding (FSW) over conventional metal active gas welding (MAG). The FSW experiments were carried out with different tool designs and configurations. The ou…

metal active gas welding; MAG; friction stir welding; structural steel; structures; arc weldingMechanics of Materialsstructural steelMechanical Engineeringmetal active gas weldingfriction stir weldingArc weldingstructuresIndustrial and Manufacturing EngineeringMAGJournal of Manufacturing and Materials Processing; Volume 6; Issue 5; Pages: 104
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Influence of friction stir processing conditions on the manufacturing of Al-Mg-Zn-Cu alloy/boron carbide surface composite

2018

Abstract Surface metal matrix composites were synthesized via friction stir processing (FSP) on the surface of aluminium alloy 7075 (AA 7075) sheets by incorporating B4C particles (B4CP). The influence of tool rotational speeds, powder particle sizes, and change in tool travel direction between FSP passes on particle distribution and resulting properties were studied in detail. Change in tool travel direction, decreased tool rotation speed and fine B4C particles enhanced B4CP distribution and wear properties thereof. Wear resistance of composites were doubled on account of the B4CP distribution and resultant several strengthening mechanisms.

0209 industrial biotechnologyFriction stir processingMaterials scienceAlloyComposite number02 engineering and technologyBoron carbideengineering.materialIndustrial and Manufacturing EngineeringFriction stir processingchemistry.chemical_compound020901 industrial engineering & automationWearAluminium alloyAluminiumBoron carbideComposite materialSettore ING-IND/16 - Tecnologie E Sistemi Di LavorazioneStrengthening mechanisms of materialsMetals and AlloysRotational speed021001 nanoscience & nanotechnologyComputer Science ApplicationsMetal matrix compositechemistryModeling and Simulationvisual_artCeramics and Compositesvisual_art.visual_art_mediumengineeringParticleMaterials processing0210 nano-technology
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Augmentation of weld penetration by flux assisted TIG welding and its distinct variants for oxygen free copper

2021

Abstract A comparative study to investigate the influences of single component fluxes on the depth-to-width ratio (DWR) of oxygen free copper was carried out with novel variants of tungsten inert gas (TIG) welding namely Activated TIG (A-TIG), Flux Bounded TIG (FB-TIG) and Flux Zoned TIG (FB-TIG) processes. The experiments to identify the fluxes delivering the higher DWRs in A-TIG welding among thirteen distinct fluxes were followed by the trials with FB-TIG and FZ-TIG employing those identified DWR fluxes. The fluxes which outperformed with all the techniques were MoO3 & MgO. Reversed Marangoni and arc constriction mechanisms were perceived to be opt for such an increase in DWR. Metallurgi…

lcsh:TN1-997Oxygen-free copperMaterials scienceWeld penetrationFZ-TIG Weldingchemistry.chemical_element02 engineering and technologyWeldingTungsten01 natural scienceslaw.inventionBiomaterialsFlux (metallurgy)law0103 physical sciencesInert gasSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazionelcsh:Mining engineering. Metallurgy010302 applied physicsFluxMarangoni effectGas tungsten arc weldingMetallurgyOxideMetals and AlloysWeld penetrationA-TIG021001 nanoscience & nanotechnologySurfaces Coatings and FilmschemistryCeramics and Composites0210 nano-technologyCopperJournal of Materials Research and Technology
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Properties Augmentation of Cast Hypereutectic Al–Si Alloy Through Friction Stir Processing

2022

AbstractThe present endeavour is to augment mechanical attributes via friction stir processing (FSP) in hypereutectic aluminium–silicon castings by the means of microstructural modifications and defects reduction. Wherein, the study proceeds with mainly two approaches namely, alteration in tool revolution (TR) and the number of FSP passes. The prepared specimens were evaluated investigating volume fraction of porosities, microstructural characterizations and microhardness. Therefrom, the specimen with highest number of passes delivered most uniform properties resulting from the reduction in casting porosities and refined silicon particle uniform distribution throughout friction stir process…

Casting modification; Materials processing; Friction stir processing; Aluminium; Porosity; Grain refinementMechanics of MaterialsMetals and AlloysMetallurgy and Metallic MaterialsMaterials ChemistryMaterialkemiAluminium Casting modification Friction stir processing Grain refinement Materials processing PorosityMetallurgi och metalliska materialCondensed Matter PhysicsSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazione
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