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

D. T. Pierce; D. R. Coughlin; D. L. Williamson; J. Kähkönen; A. J. Clarke; K. D. Clarke; J. G. Speer; E. De Moor

doi:10.1016/j.scriptamat.2016.04.027

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

D. T. Pierce, D. R. Coughlin, D. L. Williamson, J. Kähkönen, A. J. Clarke, K. D. Clarke, J. G. Speer, E. De Moor

Alloy Behavior & Design

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70 Scopus citations

Abstract

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. Cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450 °C.

Original language	English
Pages (from-to)	5-9
Number of pages	5
Journal	Scripta Materialia
Volume	121
DOIs	https://doi.org/10.1016/j.scriptamat.2016.04.027
State	Published - Aug 1 2016

Funding

This work was supported by the U.S. Department of Energy Advance Manufacturing Office under Award Number DE-EE0005765 . DTP, JGS, and EDM gratefully acknowledge the support from the sponsors of the Advanced Steel Processing and Products Research Center (ASPPRC) , an industry/university cooperative research center. DRC, KDC, and AJC gratefully acknowledge support from Los Alamos National Laboratory , operated by Los Alamos National Security, LLC under Contract No. DE-AC52-06NA25396 for the U.S. Department of Energy.

Funders	Funder number
Advanced Steel Processing and Products Research Center
U.S. Department of Energy Advance Manufacturing Office	DE-EE0005765
Los Alamos National Laboratory

Keywords

Cementite
Mössbauer spectroscopy
Quenching and partitioning
Retained austenite
Transition carbides

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10.1016/j.scriptamat.2016.04.027

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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 = "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 M{\"o}ssbauer 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. Cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450 °C.",

keywords = "Cementite, M{\"o}ssbauer spectroscopy, Quenching and partitioning, Retained austenite, Transition carbides",

author = "Pierce, {D. T.} and Coughlin, {D. R.} and Williamson, {D. L.} and J. K{\"a}hk{\"o}nen and Clarke, {A. J.} and Clarke, {K. D.} and Speer, {J. G.} and {De Moor}, E.",

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year = "2016",

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doi = "10.1016/j.scriptamat.2016.04.027",

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T1 - Quantitative investigation into the influence of temperature on carbide and austenite evolution during partitioning of a quenched and partitioned steel

AU - Pierce, D. T.

AU - Coughlin, D. R.

AU - Williamson, D. L.

AU - Kähkönen, J.

AU - Clarke, A. J.

AU - Clarke, K. D.

AU - Speer, J. G.

AU - De Moor, E.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - 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. Cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450 °C.

AB - 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. Cementite forms during austenite decomposition and in the martensite for longer partitioning times at 450 °C.

KW - Cementite

KW - Mössbauer spectroscopy

KW - Quenching and partitioning

KW - Retained austenite

KW - Transition carbides

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U2 - 10.1016/j.scriptamat.2016.04.027

DO - 10.1016/j.scriptamat.2016.04.027

M3 - Article

AN - SCOPUS:84967214238

SN - 1359-6462

VL - 121

SP - 5

EP - 9

JO - Scripta Materialia

JF - Scripta Materialia

ER -

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

Abstract

Funding

Keywords

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