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  1. No Access

    Article

    Dynamic Recrystallization and Phase-Specific Corrosion Performance in a Super Duplex Stainless Steel

    Super duplex stainless steel specimens were subjected to controlled (in a deformation simulator) thermal and thermal plus deformation treatments. The objective was to relate the corrosion performance with hot ...

    Riya Mondal, Sunil Kumar Bonagani… in Journal of Materials Engineering and Perfo… (2022)

  2. No Access

    Article

    A comparative assessment in sequential μ-drilling of Hastelloy-X using laser in combination with μ-EDM and μ-ECM

    Hastelloy-X is a nickel-based superalloy predominantly using in engine combustion zone parts of gas turbines. Micro-holes are drilling to the surface of these parts for air-cooling passageways to improve part-...

    P. V. Sivaprasad, K. Panneerselvam… in Journal of the Brazilian Society of Mechan… (2021)

  3. No Access

    Article

    Solution Annealing of Super Duplex Stainless Steel: Correlating Corrosion Performance with Grain Size and Phase-Specific Chemistry

    A super duplex stainless steel was subjected to solution annealing at 1323 K. This led to grain coarsening, ‘limited’ (~ 7 pct by area) austenite-to-ferrite phase transformation and changes in phase-specific c...

    Riya Mondal, A. Rajagopal… in Metallurgical and Materials Transactions A (2020)

  4. No Access

    Article

    Defining the Post-Machined Sub-surface in Austenitic Stainless Steels

    Austenitic stainless steels grades, with differences in chemistry, stacking fault energy, and thermal conductivity, were subjected to vertical milling. Anodic potentiodynamic polarization was able to different...

    N. Srinivasan, B. Sunil Kumar, V. Kain… in Metallurgical and Materials Transactions A (2018)

  5. No Access

    Article

    An overview on constitutive modelling to predict elevated temperature flow behaviour of fast reactor structural materials

    This overview emphasized the aspects of formulation and application of various constitutive models developed by us in recent past viz. Johnson- Cook (JC), modified Zerilli-Armstrong (MZA), strain compensated Arrh...

    Dipti Samantaray, Sumantra Mandal… in Transactions of the Indian Institute of Me… (2010)

  6. No Access

    Article

    Grain Boundary Microstructural Control through Thermomechanical Processing in a Titanium-Modified Austenitic Stainless Steel

    The present study discusses the grain boundary microstructural control in a 15Cr-15Ni-2.2Mo-Ti modified austenitic stainless steel (commonly known as alloy D9) through a one-step thermomechanical treatment. Th...

    Sumantra Mandal, P.V. Sivaprasad, Baldev Raj… in Metallurgical and Materials Transactions A (2008)

  7. No Access

    Article

    Modeling Microstructural Evolution During Dynamic Recrystallization of Alloy D9 Using Artificial Neural Network

    An artificial neural network (ANN) model was developed to predict the microstructural evolution of a 15Cr-15Ni-2.2Mo-Ti modified austenitic stainless steel (Alloy D9) during dynamic recrystallization (DRX). Th...

    Sumantra Mandal, P.V. Sivaprasad, R.K. Dube in Journal of Materials Engineering and Perfo… (2007)

  8. No Access

    Article

    Kinetics, mechanism and modelling of microstructural evolution during thermomechanical processing of a 15Cr–15Ni–2.2Mo–Ti modified austenitic stainless steel

    The paper discusses the kinetics, mechanism and modelling of the microstructural evolution of a 15Cr–15Ni–2.2Mo–0.3Ti modified austenitic stainless steel (alloy D9) during dynamic recrystallization (DRX). The ...

    Sumantra Mandal, P. V. Sivaprasad, R. K. Dube in Journal of Materials Science (2007)

  9. No Access

    Article

    Instability maps: An aid to tool design

    The properties of metals and their alloys depend strongly on their processing history. For example, the distributions of phases, grain structure, alloy compositional segregation, and defects in final commercia...

    P. V. Sivaprasad, S. Venugopal in Journal of Materials Engineering and Performance (2003)

  10. No Access

    Article

    A journey with prasad’s processing maps

    The constitutive flow behavior of austenitic stainless steel types AISI 304L, 316L, and 304 in the temperature range of 873 K (600 °C) to 1473 K (1200 °C) and strain-rate range of 0.001 s−1–100 s−1 has been evalu...

    S. Venugopal, P. V. Sivaprasad in Journal of Materials Engineering and Performance (2003)

  11. No Access

    Chapter and Conference Paper

    Multiscaling in Normal Grain Growth: A Monte Carlo Study

    We describe Monte Carlo simulation of the phenomenon of normal grain growth employing q state Potts model. We find that at long times after quench the grain size distribution is multiscaling.

    S. Koka, P. V. Sivaprasad, V. Sridhar… in Frontiers in Materials Modelling and Design (1998)

  12. No Access

    Chapter and Conference Paper

    Modelling of Process for Controlled Microstructure of Material

    The safe processing window for hot working of a 15Cr-15Ni-2.2Mo-0.3Ti austenitic stainless steel (Alloy D9) is identified using processing maps developed on the basis of dynamic materials model and hot compres...

    P. V. Sivaprasad in Frontiers in Materials Modelling and Design (1998)

  13. No Access

    Article

    Tensile flow and work-hardening behavior of a Ti-modified austenitic stainless steel

    The flow-stress data of a 15Cr-15Ni-2.2Mo-Ti modified austenitic stainless steel in the temperature range 300 to 1023 K was analyzed in terms of Ludwigson and Voce equations. The parameters of these equations ...

    P. V. Sivaprasad, S. Venugopal, S. Venkadesan in Metallurgical and Materials Transactions A (1997)