Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Colorado School of Mines, Golden, CO (United States). Department of Physics
- Colorado School of Mines, Golden, CO (United States). Advanced Steel Processing and Products Research Center
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office
- Grant/Contract Number:
- AC05-00OR22725; EE0005765; AC52-06NA25396
- OSTI ID:
- 1357998
- Alternate ID(s):
- OSTI ID: 1337415
- Journal Information:
- Scripta Materialia, Vol. 121, Issue C; ISSN 1359-6462
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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