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Effect of Twinning on Microstructural Evolution During Dynamic Recrystallisation of Hot Deformed As-Cast Austenitic Stainless Steel

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Abstract

An as-cast austenitic stainless steel was hot deformed at 1173 K, 1223 K, and 1373 K (900 °C, 950 °C, and 1100 °C) to a strain of 1 with a strain rate of 0.5 or 5 s−1. The recrystallised fraction is observed to be dependent on dynamic recrystallisation (DRX). DRX grains nucleated at the initial stages of recrystallization have similar orientation to that of the deformed grains. With increasing deformation, Cube texture dominates, mainly due to multiple twinning and grain rotation during deformation.

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Acknowledgments

The authors are grateful to the Australian Research Council (ARC) for financial support to conduct this research. We are also thankful to Dr. Nicole Stanford, ITRI, Deakin University, Geelong, Victoria, Australia for kind assistance in experimental activities and technical discussion. Authors (AG, GKM, SGC) wish to acknowledge Director, CSIR-NML for his constant encouragement.

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Authors and Affiliations

  1. CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand, 831007, India

    Ankan Guria Summer Intern, Graduate Student

  2. Institute for Technology Research and Innovation, Deakin University, Geelong, VIC, Australia

    Peter Hodgson Director of Research and Professor

  3. Faculty of Engineering, Computer & Mathematical Sciences, University of Adelaide, Adelaide, SA, Australia

    John H. Beynon Executive Dean and Professor

  4. University of Idaho, Moscow, 83843, USA

    Ankan Guria Summer Intern, Graduate Student

  5. Materials Processing Group, CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand, 831007, India

    Gopi K. Mandal Senior Scientist

  6. Materials Science and Technology Division, CSIR-National Metallurgical Laboratory, Jamshedpur, Jharkhand, 831007, India

    Gopi K. Mandal Senior Scientist & Sandip Ghosh Chowdhury Senior Principal Scientist

Authors
  1. Ankan Guria Summer Intern, Graduate Student
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  2. Gopi K. Mandal Senior Scientist
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  3. Peter Hodgson Director of Research and Professor
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  5. Sandip Ghosh Chowdhury Senior Principal Scientist
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Corresponding author

Correspondence to Sandip Ghosh Chowdhury Senior Principal Scientist.

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Manuscript submitted May 1, 2015.

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Guria, A., Mandal, G.K., Hodgson, P. et al. Effect of Twinning on Microstructural Evolution During Dynamic Recrystallisation of Hot Deformed As-Cast Austenitic Stainless Steel. Metall Mater Trans A 46, 4423–4428 (2015). https://doi.org/10.1007/s11661-015-3078-y

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  • DOI: https://doi.org/10.1007/s11661-015-3078-y

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