Effect of carbon fraction on stacking fault energy of austenitic stainless steels

Tae Ho Lee; Heon Young Ha; Byoungchul Hwang; Sung Joon Kim; Eunjoo Shin

doi:10.1007/s11661-012-1423-y

Effect of carbon fraction on stacking fault energy of austenitic stainless steels

Tae Ho Lee, Heon Young Ha, Byoungchul Hwang, Sung Joon Kim, Eunjoo Shin

Dept. of Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

The effect of C fraction (C/N) on stacking fault energy (SFE) of austenitic Fe-18Cr-10Mn steels with a fixed amount of C+N (0.6 wt pct) was investigated by means of neutron diffraction and transmission electron microscopy (TEM). The SFE were evaluated by the Rietveld whole-profile fitting combined with the double-Voigt size-strain analysis for neutron diffraction profiles using neutron diffraction. The measured SFE showed distinguishable difference and were well correlated with the change in deformation microstructure. Threedimensional linear regression analyses yielded the relation reflecting the contribution of both C+N and C/ N: SFE (mJ/m²) = -5.97+39.94(wt pct C+N)+ 3.81(C/N). As C fraction increased, the strain-induced γ→ε martensitic transformation was suppressed, and deformation twinning became the primary mode of plastic deformation.

Original language	English
Pages (from-to)	4455-4459
Number of pages	5
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	43
Issue number	12
DOIs	https://doi.org/10.1007/s11661-012-1423-y
State	Published - Dec 2012

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title = "Effect of carbon fraction on stacking fault energy of austenitic stainless steels",

abstract = "The effect of C fraction (C/N) on stacking fault energy (SFE) of austenitic Fe-18Cr-10Mn steels with a fixed amount of C+N (0.6 wt pct) was investigated by means of neutron diffraction and transmission electron microscopy (TEM). The SFE were evaluated by the Rietveld whole-profile fitting combined with the double-Voigt size-strain analysis for neutron diffraction profiles using neutron diffraction. The measured SFE showed distinguishable difference and were well correlated with the change in deformation microstructure. Threedimensional linear regression analyses yielded the relation reflecting the contribution of both C+N and C/ N: SFE (mJ/m2) = -5.97+39.94(wt pct C+N)+ 3.81(C/N). As C fraction increased, the strain-induced γ→ε martensitic transformation was suppressed, and deformation twinning became the primary mode of plastic deformation.",

author = "Lee, \{Tae Ho\} and Ha, \{Heon Young\} and Byoungchul Hwang and Kim, \{Sung Joon\} and Eunjoo Shin",

year = "2012",

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doi = "10.1007/s11661-012-1423-y",

language = "English",

volume = "43",

pages = "4455--4459",

journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",

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TY - JOUR

T1 - Effect of carbon fraction on stacking fault energy of austenitic stainless steels

AU - Lee, Tae Ho

AU - Ha, Heon Young

AU - Hwang, Byoungchul

AU - Kim, Sung Joon

AU - Shin, Eunjoo

PY - 2012/12

Y1 - 2012/12

N2 - The effect of C fraction (C/N) on stacking fault energy (SFE) of austenitic Fe-18Cr-10Mn steels with a fixed amount of C+N (0.6 wt pct) was investigated by means of neutron diffraction and transmission electron microscopy (TEM). The SFE were evaluated by the Rietveld whole-profile fitting combined with the double-Voigt size-strain analysis for neutron diffraction profiles using neutron diffraction. The measured SFE showed distinguishable difference and were well correlated with the change in deformation microstructure. Threedimensional linear regression analyses yielded the relation reflecting the contribution of both C+N and C/ N: SFE (mJ/m2) = -5.97+39.94(wt pct C+N)+ 3.81(C/N). As C fraction increased, the strain-induced γ→ε martensitic transformation was suppressed, and deformation twinning became the primary mode of plastic deformation.

AB - The effect of C fraction (C/N) on stacking fault energy (SFE) of austenitic Fe-18Cr-10Mn steels with a fixed amount of C+N (0.6 wt pct) was investigated by means of neutron diffraction and transmission electron microscopy (TEM). The SFE were evaluated by the Rietveld whole-profile fitting combined with the double-Voigt size-strain analysis for neutron diffraction profiles using neutron diffraction. The measured SFE showed distinguishable difference and were well correlated with the change in deformation microstructure. Threedimensional linear regression analyses yielded the relation reflecting the contribution of both C+N and C/ N: SFE (mJ/m2) = -5.97+39.94(wt pct C+N)+ 3.81(C/N). As C fraction increased, the strain-induced γ→ε martensitic transformation was suppressed, and deformation twinning became the primary mode of plastic deformation.

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U2 - 10.1007/s11661-012-1423-y

DO - 10.1007/s11661-012-1423-y

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SN - 1073-5623

VL - 43

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EP - 4459

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 12

ER -

Effect of carbon fraction on stacking fault energy of austenitic stainless steels

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