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Evolution of Microstructure in a Low-Si Micro-alloyed Steel Processed Through One-Step Quenching and Partitioning

  • G. K. Bansal
  • M. Pradeep
  • Chiradeep Ghosh
  • V. Rajinikanth
  • V. C. Srivastava
  • A. N. Bhagat
  • S. Kundu
Communication
  • 64 Downloads

Abstract

An attempt has been made in the current study to investigate the possibility of austenite retention in 0.5 wt pct Si steel without Al, processed through the one-step Q&P technique. The XRD and microstructural analysis confirmed austenite retention (maximum of 5.73 ± 0.16 vol pct), which showed thin film and blocky morphologies. The experimental amount of retained austenite was found to increase with the increasing quench temperature; however, it was almost independent of partitioning time. The carbon content in the retained austenite did not show any significant variation, after Q&P treatment for different time–temperature combinations. The hardness was found to be sensitive to quench temperature than the partitioning time.

Notes

The authors gratefully acknowledge the financial support of Tata Steel Ltd., Jamshedpur for this research. The authors would also like to thank the Director, CSIR-NML, and Tata Steel management for their kind encouragement and permission to publish this work.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • G. K. Bansal
    • 1
    • 2
  • M. Pradeep
    • 2
  • Chiradeep Ghosh
    • 3
  • V. Rajinikanth
    • 2
  • V. C. Srivastava
    • 1
    • 2
  • A. N. Bhagat
    • 3
  • S. Kundu
    • 1
    • 3
  1. 1.Academy of Scientific and Innovative ResearchCSIR-National Metallurgical LaboratoryJamshedpurIndia
  2. 2.Materials Engineering DivisionCSIR-National Metallurgical LaboratoryJamshedpurIndia
  3. 3.Research and Development DivisionTata Steel LimitedJamshedpurIndia

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