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Title: Tempering of low-temperature bainite

Abstract

Electron microscopy, X-ray diffraction, and atom probe tomography have been used to identify the changes which occur during the tempering of a carbide-free bainitic steel transformed at 473 K (200 °C). Partitioning of solute between ferrite and thin-films of retained austenite was observed on tempering at 673 K (400 °C) for 30 minutes. After tempering at 673 K (400 °C) and 773 K (500 °C) for 30 minutes, cementite was observed in the form of nanometre scale precipitates. Here, proximity histograms showed that the partitioning of solutes other than silicon from the cementite was slight at 673 K (400 °C) and more obvious at 773 K (500 °C). In both cases, the nanometre scale carbides are greatly depleted in silicon.

Authors:
 [1];  [2];  [3];  [1]
  1. Univ. of Cambridge, Cambridge (United Kingdom)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
Sponsoring Org.:
USDOE, Office of Management, Budget, and Evaluation; Work for Others (WFO)
OSTI Identifier:
1357964
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
Additional Journal Information:
Journal Volume: 43; Journal Issue: 529; Journal ID: ISSN 1073-5623
Publisher:
ASM International
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Peet, Mathew J., Babu, Sudarsanam Suresh, Miller, Mike K., and Bhadeshia, H. K. D. H. Tempering of low-temperature bainite. United States: N. p., 2017. Web. doi:10.1007/s11661-017-4086-x.
Peet, Mathew J., Babu, Sudarsanam Suresh, Miller, Mike K., & Bhadeshia, H. K. D. H. Tempering of low-temperature bainite. United States. doi:10.1007/s11661-017-4086-x.
Peet, Mathew J., Babu, Sudarsanam Suresh, Miller, Mike K., and Bhadeshia, H. K. D. H. Mon . "Tempering of low-temperature bainite". United States. doi:10.1007/s11661-017-4086-x. https://www.osti.gov/servlets/purl/1357964.
@article{osti_1357964,
title = {Tempering of low-temperature bainite},
author = {Peet, Mathew J. and Babu, Sudarsanam Suresh and Miller, Mike K. and Bhadeshia, H. K. D. H.},
abstractNote = {Electron microscopy, X-ray diffraction, and atom probe tomography have been used to identify the changes which occur during the tempering of a carbide-free bainitic steel transformed at 473 K (200 °C). Partitioning of solute between ferrite and thin-films of retained austenite was observed on tempering at 673 K (400 °C) for 30 minutes. After tempering at 673 K (400 °C) and 773 K (500 °C) for 30 minutes, cementite was observed in the form of nanometre scale precipitates. Here, proximity histograms showed that the partitioning of solutes other than silicon from the cementite was slight at 673 K (400 °C) and more obvious at 773 K (500 °C). In both cases, the nanometre scale carbides are greatly depleted in silicon.},
doi = {10.1007/s11661-017-4086-x},
journal = {Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science},
number = 529,
volume = 43,
place = {United States},
year = {2017},
month = {4}
}

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Table 1 Table 1: Chemical Compositions of Alloys Studied/Weight Percent

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Works referenced in this record:

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    Works referencing / citing this record:

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    journal, May 2007


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    journal, August 2010


    Nanoscale microstructural characterization of a nanobainitic steel
    journal, August 2011


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    journal, July 2004


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    • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 464, Issue 2092
    • DOI: 10.1098/rspa.2007.0201

    Surface Relief Due to Bainite Transformation at 473 K (200 °C)
    journal, June 2011

    • Peet, M. J.; Bhadeshia, H. K. D. H.
    • Metallurgical and Materials Transactions A, Vol. 42, Issue 11
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    Ultra-high-strength Bainitic Steels
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    journal, April 2011

    • Caballero, F. G.; Miller, M. K.; Garcia-Mateo, C.
    • Metallurgical and Materials Transactions A, Vol. 42, Issue 12
    • DOI: 10.1007/s11661-011-0699-7

    Experimental evidence for non-cubic bainitic ferrite
    journal, September 2013


    Solubility of carbon in tetragonal ferrite in equilibrium with austenite
    journal, February 2013


    Effect of tempering upon the tensile properties of a nanostructured bainitic steel
    journal, October 2014

    • Hasan, H. S.; Peet, M. J.; Avettand-Fènoël, M-N.
    • Materials Science and Engineering: A, Vol. 615
    • DOI: 10.1016/j.msea.2014.07.097

    Redistribution of alloying elements during tempering of a nanocrystalline steel
    journal, January 2008


    Atomic scale observations of bainite transformation in a high carbon high silicon steel
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    journal, June 2004

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    • DOI: 10.1016/j.cossms.2004.09.005

    Very strong low temperature bainite
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    • Caballero, F. G.; Bhadeshia, H. K. D. H.; Mawella, K. J. A.
    • Materials Science and Technology, Vol. 18, Issue 3
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