Ranjeet Kumar

Ranjeet Kumar
Indian Institute of Technology Delhi | IIT Delhi · Department of Materials Science and Engineering

Pursuing Ph.D.

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8
Publications
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Citations

Publications

Publications (8)
Article
For good deep drawability in aluminium and its alloys, a proper balance of deformation and recrystallization texture components is essestial in the final material. This balance of deformation and recrystallization texture can only be achieved by properly controlling the thermo-mechanical processing of the alloy. In the present study, microstructure...
Article
Modified 9Cr-1Mo ferritic/martensitic (T91) steel tubes have been welded with gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW) processes. The welded tubes have been post-weld heat-treated (PWHT) at selected temperatures (i.e., at 720 • C, 760 • C and 775 • C for different times) below their Ac 1 critical temperature (~791 ± 5 •...
Article
The work is focused on examining the influence of heat treatment modification during post-weld heat treatment on microstructure and mechanical properties of dissimilar welds of T91 and Super304H. Tungsten inert gas (TIG) welding was employed with ERNiCr-3 as filler to prepare the dissimilar metal welds. Following that, two post-weld heat treatments...
Article
The present work evaluates the microstructure stability of modified 9Cr-1Mo steel welds when subjected to high temperature exposure (HTE) at 775 °C for different times (5, 100, 500, and 1000 h). Prior to HTE, a post weld heat treatment (PWHT) at 760 °C for 2 h was performed. Upon HTE, the individual weld zones viz., weld metal (WM), coarse-grain he...
Article
Super duplex stainless steel (UNS S32750) butt joints were prepared using ER2594 and ER2595 electrodes by shielded metal arc welding (SMAW) process. The heat input used during welding was in the range of 0.75–0.81 kJ/mm. Microstructure and texture across the weldments were investigated using optical microscope, scanning electron microscope, and ele...
Article
The present study investigates the effect of homogenization on microstructures and texture evolution in a TRC i. e. twin roll cast Al-Fe-Si aluminum alloy (AA8011). TRC AA8011 alloy with an initial thickness of 7 mm was cold rolled upto 50% thickness reduction and homogenized at 580 • C for different times (4h, 8h, and 12h). The initially elongated...

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