Effect of carbon and nitrogen on work hardening and deformation microstructure in stable austenitic stainless steels

Mutsumi Yoshitake, Toshihiro Tsuchiyama, Setsuo Takaki

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13 Citations (Scopus)

Abstract

Stable austenitic stainless steels containing 0.1 % carbon and nitrogen (Fe-18%Cr-12%Ni-0.1%C and Fe-18%Cr-12%Ni-0.1%N alloys) were tensile-tested to clarify the difference between the effects of carbon and nitrogen on the work hardening behavior as well as the deformation microstructure development in austenite. The carbon-added steel exhibited a much larger work hardening rate than the nitrogen-added steel in the high strain region (true strain > 0.25) although the dislocation accumulation was more significant in the nitrogen-added steel. EBSD analysis revealed that deformation twins were more frequently formed in the carbon-added steel, which leads to the TWIP effect. The reason why the nitrogen-added steel showed the less twinning behavior seemed to be mainly related with the short range order (SRO) composed of Cr and N atoms.

Original languageEnglish
Pages (from-to)223-228
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume98
Issue number6
DOIs
Publication statusPublished - 2012

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work hardening
austenitic stainless steels
Austenitic stainless steel
Strain hardening
Nitrogen
Carbon
Steel
nitrogen
microstructure
Microstructure
carbon
carbon steels
steels
Carbon steel
Twinning
twinning
austenite
Austenite
Atoms
atoms

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "Effect of carbon and nitrogen on work hardening and deformation microstructure in stable austenitic stainless steels",
abstract = "Stable austenitic stainless steels containing 0.1 {\%} carbon and nitrogen (Fe-18{\%}Cr-12{\%}Ni-0.1{\%}C and Fe-18{\%}Cr-12{\%}Ni-0.1{\%}N alloys) were tensile-tested to clarify the difference between the effects of carbon and nitrogen on the work hardening behavior as well as the deformation microstructure development in austenite. The carbon-added steel exhibited a much larger work hardening rate than the nitrogen-added steel in the high strain region (true strain > 0.25) although the dislocation accumulation was more significant in the nitrogen-added steel. EBSD analysis revealed that deformation twins were more frequently formed in the carbon-added steel, which leads to the TWIP effect. The reason why the nitrogen-added steel showed the less twinning behavior seemed to be mainly related with the short range order (SRO) composed of Cr and N atoms.",
author = "Mutsumi Yoshitake and Toshihiro Tsuchiyama and Setsuo Takaki",
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TY - JOUR

T1 - Effect of carbon and nitrogen on work hardening and deformation microstructure in stable austenitic stainless steels

AU - Yoshitake, Mutsumi

AU - Tsuchiyama, Toshihiro

AU - Takaki, Setsuo

PY - 2012

Y1 - 2012

N2 - Stable austenitic stainless steels containing 0.1 % carbon and nitrogen (Fe-18%Cr-12%Ni-0.1%C and Fe-18%Cr-12%Ni-0.1%N alloys) were tensile-tested to clarify the difference between the effects of carbon and nitrogen on the work hardening behavior as well as the deformation microstructure development in austenite. The carbon-added steel exhibited a much larger work hardening rate than the nitrogen-added steel in the high strain region (true strain > 0.25) although the dislocation accumulation was more significant in the nitrogen-added steel. EBSD analysis revealed that deformation twins were more frequently formed in the carbon-added steel, which leads to the TWIP effect. The reason why the nitrogen-added steel showed the less twinning behavior seemed to be mainly related with the short range order (SRO) composed of Cr and N atoms.

AB - Stable austenitic stainless steels containing 0.1 % carbon and nitrogen (Fe-18%Cr-12%Ni-0.1%C and Fe-18%Cr-12%Ni-0.1%N alloys) were tensile-tested to clarify the difference between the effects of carbon and nitrogen on the work hardening behavior as well as the deformation microstructure development in austenite. The carbon-added steel exhibited a much larger work hardening rate than the nitrogen-added steel in the high strain region (true strain > 0.25) although the dislocation accumulation was more significant in the nitrogen-added steel. EBSD analysis revealed that deformation twins were more frequently formed in the carbon-added steel, which leads to the TWIP effect. The reason why the nitrogen-added steel showed the less twinning behavior seemed to be mainly related with the short range order (SRO) composed of Cr and N atoms.

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