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Title: Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel

Abstract

Here, the influence of partitioning temperature on microstructural evolution during quenching and partitioning was investigated in a 0.38C-1.54Mn-1.48Si wt.% steel using Mössbauer spectroscopy and transmission electron microscopy. η-carbide formation occurs in the martensite during the quenching, holding, and partitioning steps. More effective carbon partitioning from martensite to austenite was observed at 450 than 400°C, resulting in lower martensite carbon contents, less carbide formation, and greater retained austenite amounts for short partitioning times. Conversely, greater austenite decomposition occurs at 450°C for longer partitioning times. Lastly, cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450°C.

Authors:
 [1];  [2];  [3];  [4];  [2];  [2];  [4];  [4]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Colorado School of Mines, Golden, CO (United States). Department of Physics
  4. Colorado School of Mines, Golden, CO (United States). Advanced Steel Processing and Products Research Center
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
OSTI Identifier:
1357998
Alternate Identifier(s):
OSTI ID: 1337415
Grant/Contract Number:  
AC05-00OR22725; EE0005765; AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 121; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Quenching and partitioning; Transition carbides; M ssbauer spectroscopy; Retained austenite; Cementite

Citation Formats

Pierce, Dean T., Coughlin, D. R., Williamson, Don L., Kähkönen, Joonas, Clarke, A. J., Clarke, Kester D., Speer, J. G., and De Moor, Emmanuel. Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel. United States: N. p., 2016. Web. doi:10.1016/j.scriptamat.2016.04.027.
Pierce, Dean T., Coughlin, D. R., Williamson, Don L., Kähkönen, Joonas, Clarke, A. J., Clarke, Kester D., Speer, J. G., & De Moor, Emmanuel. Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel. United States. https://doi.org/10.1016/j.scriptamat.2016.04.027
Pierce, Dean T., Coughlin, D. R., Williamson, Don L., Kähkönen, Joonas, Clarke, A. J., Clarke, Kester D., Speer, J. G., and De Moor, Emmanuel. Tue . "Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel". United States. https://doi.org/10.1016/j.scriptamat.2016.04.027. https://www.osti.gov/servlets/purl/1357998.
@article{osti_1357998,
title = {Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel},
author = {Pierce, Dean T. and Coughlin, D. R. and Williamson, Don L. and Kähkönen, Joonas and Clarke, A. J. and Clarke, Kester D. and Speer, J. G. and De Moor, Emmanuel},
abstractNote = {Here, the influence of partitioning temperature on microstructural evolution during quenching and partitioning was investigated in a 0.38C-1.54Mn-1.48Si wt.% steel using Mössbauer spectroscopy and transmission electron microscopy. η-carbide formation occurs in the martensite during the quenching, holding, and partitioning steps. More effective carbon partitioning from martensite to austenite was observed at 450 than 400°C, resulting in lower martensite carbon contents, less carbide formation, and greater retained austenite amounts for short partitioning times. Conversely, greater austenite decomposition occurs at 450°C for longer partitioning times. Lastly, cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450°C.},
doi = {10.1016/j.scriptamat.2016.04.027},
journal = {Scripta Materialia},
number = C,
volume = 121,
place = {United States},
year = {Tue May 03 00:00:00 EDT 2016},
month = {Tue May 03 00:00:00 EDT 2016}
}

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