Quantitative analysis of grain boundaries in carbon- and nitrogen-added ferritic steels by atom probe tomography

Jun Takahashi; Kazuto Kawakami; Kohsaku Ushioda; Setsuo Takaki; Nobuo Nakata; Toshihiro Tsuchiyama

doi:10.1016/j.scriptamat.2011.10.026

Quantitative analysis of grain boundaries in carbon- and nitrogen-added ferritic steels by atom probe tomography

Jun Takahashi, Kazuto Kawakami, Kohsaku Ushioda, Setsuo Takaki, Nobuo Nakata, Toshihiro Tsuchiyama

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

43 Citations (Scopus)

Abstract

Recent reports state that solute carbon increases the Hall-Petch coefficient in ferritic steel through grain boundary segregation, whereas solute nitrogen has hardly any affect. Atom probe analysis of grain boundaries was performed to investigate why nitrogen has negligible influence. Nitrogen segregation at the boundary was clearly observed with a similar amount of carbon segregation in ferritic steel containing 5C-54 N (mass ppm). Quantitative estimation of the coefficient increment per unit interfacial excess implies that grain boundary segregation of nitrogen barely influences the Hall-Petch coefficient.

Original language	English
Pages (from-to)	207-210
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2011.10.026
Publication status	Published - Mar 2012

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2011.10.026

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abstract = "Recent reports state that solute carbon increases the Hall-Petch coefficient in ferritic steel through grain boundary segregation, whereas solute nitrogen has hardly any affect. Atom probe analysis of grain boundaries was performed to investigate why nitrogen has negligible influence. Nitrogen segregation at the boundary was clearly observed with a similar amount of carbon segregation in ferritic steel containing 5C-54 N (mass ppm). Quantitative estimation of the coefficient increment per unit interfacial excess implies that grain boundary segregation of nitrogen barely influences the Hall-Petch coefficient.",

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AU - Takahashi, Jun

AU - Kawakami, Kazuto

AU - Ushioda, Kohsaku

AU - Takaki, Setsuo

AU - Nakata, Nobuo

AU - Tsuchiyama, Toshihiro

PY - 2012/3

Y1 - 2012/3

N2 - Recent reports state that solute carbon increases the Hall-Petch coefficient in ferritic steel through grain boundary segregation, whereas solute nitrogen has hardly any affect. Atom probe analysis of grain boundaries was performed to investigate why nitrogen has negligible influence. Nitrogen segregation at the boundary was clearly observed with a similar amount of carbon segregation in ferritic steel containing 5C-54 N (mass ppm). Quantitative estimation of the coefficient increment per unit interfacial excess implies that grain boundary segregation of nitrogen barely influences the Hall-Petch coefficient.

AB - Recent reports state that solute carbon increases the Hall-Petch coefficient in ferritic steel through grain boundary segregation, whereas solute nitrogen has hardly any affect. Atom probe analysis of grain boundaries was performed to investigate why nitrogen has negligible influence. Nitrogen segregation at the boundary was clearly observed with a similar amount of carbon segregation in ferritic steel containing 5C-54 N (mass ppm). Quantitative estimation of the coefficient increment per unit interfacial excess implies that grain boundary segregation of nitrogen barely influences the Hall-Petch coefficient.

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JO - Scripta Materialia

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IS - 5

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Quantitative analysis of grain boundaries in carbon- and nitrogen-added ferritic steels by atom probe tomography

Abstract

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