Showing papers by "Sushanta Kumar Panigrahi published in 2012"
TL;DR: In this article, a range of grain size from 70μm to 0.7μm was studied for corrosion resistance of Mg-Y-RE magnesium alloy using electrochemical and constant immersion testing in 3.5% NaCl solution.
364 citations
TL;DR: In this article, the effect of grain refinement and heat treatment on corrosion behavior of a friction stir processed Mg-Y-RE alloy was studied and the ennoblement of pitting potential by ∼250mV vs SCE of processed samples as compared to parent alloy was attributed to grain refinement.
135 citations
15 Jul 2012-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the deformation behavior of friction stir processed magnesium alloy with average grain size ranging from 25μm to 240nm was studied and critical grain size for transition of deformation mode from twinning to slip was carried out by employing tensile and compressive tests.
Abstract: The deformation behavior of friction stir processed magnesium alloy with average grain size ranging from 25 μm to 240 nm was studied. An evaluation of critical grain size for transition of deformation mode from twinning to slip was carried out by employing tensile and compressive tests. The role of critical grain size in transition of deformation behavior from strain hardening to softening was established. Inhomogeneous yielding was observed during tensile test of ultrafine-grained magnesium alloy below the critical grain size.
27 citations