Ramakrishna Vikas S

• B.E, M.Tech
• Professor (Assistant) at Manipal Academy of Higher Education

The present study involves the fabrication of aluminium alloy 6061 matrix hybrid composites with varying weight fractions of silica sand and copper particles by employing the conventional stir casting method. The combined influence of age hardening (AH) and low temperature thermomechanical treatment (LTMT) on the hardness and tensile properties of...

The current work focuses on the natural aging phenomenon of a eutectoid steel powder-(0.8 wt.%) reinforced Al-Zn-Mg (Al 7075) alloy, which was subjected to a hybrid heat treatment. The hybrid treatment comprises the aging treatment of a matrix and the conventional treatment of a steel reinforcement in a single stretch on the stir cast composite. Th...

During machinability, the combination of machining process parameters and the material properties of the component to be machined plays an important role. Material properties depend upon the type of phase form present and the grain size of the formed phases, which in turn depends upon the prior treatment given to alter the initial room temperature...

Aluminium alloy 6061 based composites reinforced with a varied weight percentage of copper particulates are fabricated utilizing a liquid metal stir casting technique. The collective influence of copper reinforcement, age hardening and low temperature thermomechanical treatment on AA6061 was investigated. The age hardened composites displayed bette...

Abstract Numerous research incorporating precipitation hardening and/or strain hardening on Al-Mg-Si alloys has demonstrated improved mechanical properties in the alloys. However, there is a lack of research on how these processes can be combined efficiently to provide better strength and hardness for the alloys. The present study describes the eff...

The adsorption of pectin and corrosion inhibition of dual-phase AISI1040 steel with ferrite–martensite and ferrite–bainite structure in 0.5 M sulphuric acid (H 2 SO 4 ) solution have been investigated using the weightloss method. This work investigates the adsorption mechanism and quantum chemical calculations of pectin. For a specific set of param...

Present investigation deals with the mechanical properties and microstructure of dual phase (DP) steel. Normalizing and intercritical annealing heat treatments were carried out at 900, 750, 770, and 790˚C790˚790˚C and DP ferrite-martensite steel was obtained. Interaction behavior of both phases has been analyzed through tensile, hardness and impact...

Austempered Ductile Iron (ADI) belongs to the family of cast irons whose mechanical properties are altered using austempering heat treatment process. The objective of this paper is to study the effects of heat treatment parameters on manganese alloyed ADI. Hence, austenitization temperature, austempering temperature and austempering time are taken...

Hybridization of synthetic and natural fibres as reinforcement makes the polymer composites environmental friendly and sustainable when compared to synthetic fibres based polymer composites. In this study chopped strand mat/pineapple leaf fibres were hybridized. Four laminates with six layers each, with different stack sequence (GGGGGG, GPPPPG, PGG...

E-glass/Epoxy composites were fabricated using Vacuum Assisted Resin Infusion Moulding (VARIM) in fiber weight fractions of 40%, 45%, 50% and 55 percent. E-glass fiber in the form of 2D plain woven fabric of 320 gsm and 3D orthogonal woven noncrimp fabric with 1830 gsm were considered for reinforcement. Mechanical properties including tensile stren...

This study investigates the wear resistance of four thermomechanical treated monolithic AA6061 alloy, using a pin-on-disc test. In addition to the widely studied AA6061 alloy in T6 condition, the present investigation considered a low temperature thermomechanical treatment which included solution treatment, cold rolling of specimens at various defo...

Objectives: To investigate the tensile strength of fully biodegradable areca frond/corn starch composites. Methods/ Statistical Analysis: In this study, frond fibres of areca were used to reinforce starch based matrix. Combination of layup and compression moulding was used to fabricate the composite sheets. To study the tensile behaviour, experimen...

In present day, 6061 aluminium alloy has globallycaptivated the attention ofengineers and researchers as superior structural material for various applications in sectors such as automotive and aerospace industries. Nevertheless, it is vital to enhance the mechanical strength and the formability of these aluminum alloys for further applications. The...

Recycling of materials effects the environment and thus greater impetus is being given to develop materials like biodegradable composites from renewable sources. A biodegradable composite is made up of natural reinforcements and matrices that are environment friendly. Natural reinforcements in matrices that are biodegradable have several advantages...

Functionally graded materials (FGM) are advanced class of engineering materials in which location specific properties are made use in components of specific applications in a more economical and performance efficient ways. Functionally graded metal matrix composites (FGMMC) have graded distribution of reinforcements; whose volume fraction varies co...

Functionally graded materials (FGM) are advanced class of engineering materials in which location specific properties are made use in components of specific applications in a more economical and performance efficient ways. Functionally graded metal matrix composites (FGMMC) have graded distribution of reinforcements; whose volume fraction varies co...