Papers by baloji dharavath
Advances in Materials and Processing Technologies, 2021
Materials Today: Proceedings, 2021
Abstract ASS316L is a very widely used material for applications in industries like Nuclear, Phar... more Abstract ASS316L is a very widely used material for applications in industries like Nuclear, Pharmaceutical and many more. Sheet Metal Forming is one of the most widely used manufacturing methods. In the contrary, sheet metal forming of ASS316L was been less understood and in particularly friction which is an important parameter to accurately understand sheet metal forming. In this study, frictional characteristics of ASS316L has been experimentally found interfacing with Inconel 718 which is the most common superalloy used for tool in sheet metal forming. The material used in the study is 2 mm thick which was subjected to different variables like load, Capstan angle and their effects are studied.
Advances in Materials and Processing Technologies, 2020
ABSTRACT Austenitic Stainless Steel 316 L grade has wide applications in industries like pharmace... more ABSTRACT Austenitic Stainless Steel 316 L grade has wide applications in industries like pharmaceutical, chemical, petrochemical, medical equipment, and many specific subzero temperature products. These subzero applications are increasing in modern-day products to solve many issues like Natural gas storage and transport and many more. It is an ideal material for these applications due to its superior properties at these operating temperatures. In the present investigation tensile tests for ASS316 L material is conducted by considering the various parameters like different temperatures (room temperature(RT), 0°C, −25°C, −50°C) along with different orientation (0°,45°,90°), and crosshead speeds (3, 5 and 7 mm/min). The temperature variation was achieved by regulating the liquid CO2 cylinder connected using a pipe system to the closed furnace of the Universal Testing Machine setup is electronic controlled system. The output data were used to analyse the Mechanical Characteristics of the material. Then the fractured specimens at the room temperature and sub-zero temperatures were studied and analysed the failure modes in the material for the above changing variables. It was observed that the failure mode is changing from a ductile fracture to brittle when decreasing the temperature below zero degrees centigrade as predicted.
Advances in Materials and Processing Technologies, 2020
In the sheet metal industry, hot forming of high strength sheet metal alloys such as austenitic s... more In the sheet metal industry, hot forming of high strength sheet metal alloys such as austenitic stainless steels (ASSs) are in great demand. Identifying the safe strain region is essential to avoid failures and reduce the wastage. Forming limit diagram (FLD) is a vital tool which is used to describe the maximum limit of principal strains that can be sustained by sheet metals till the onset of localised necking. These diagrams are also useful in comparing the changes in forming characteristics of the material with changes in process parameters like temperature, orientation and speed of deformation. The present study aimed at comparing the experimental FLD for ASS 316L at room temperature and 900°C by stretch forming. These specimens are cut in three different orientations (0°, 45°& 90°) to the rolling direction and experiments are conducted at a strain rate of 0.1/s. It is reported that, the specimens from rolling direction are among the stronger samples. The change in formability characteristics of ASS 316L with changes in temperatures using FLD has been observed. The optical microscopy and scanning electron microscopy is analysed to understand the fracture morphologies. The comparison between these set of results indicates that there is significant increase in formability of material.
Fuel, 2014
h i g h l i g h t s Phase equilibrium and surface tension of the binary system methyl-tert-butyl ... more h i g h l i g h t s Phase equilibrium and surface tension of the binary system methyl-tert-butyl ether + 2,5-dimethylfuran. Experimental vapor-liquid equilibrium data for methyl-tert-butyl ether + 2,5-dimethylfuran at 50, 75 and 94 kPa. Experimental surface tension data for methyl-tert-butyl ether + 2,5-dimethylfuran 298.15 K. Theoretical modeling of phase equilibrium and interfacial properties by PR EoS, MHV mixing rule and square gradient theory.
Materials Today: Proceedings, 2020
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Papers by baloji dharavath