Effect of Mn depletion on intra-granular ferrite transformation in heat affected zone of welding in low alloy steel

G. Shigesato, M. Sugiyama, S. Aihara, R. Uemori, Y. Tomita

研究成果: ジャーナルへの寄稿記事

35 引用 (Scopus)

抄録

Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.

元の言語英語
ページ(範囲)93-100
ページ数8
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
87
発行部数2
DOI
出版物ステータス出版済み - 2 2001

Fingerprint

heat affected zone
high strength steels
Heat affected zone
High strength steel
welding
Ferrite
ferrites
Welding
depletion
cycles
Nucleation
nucleation
Transmission electron microscopy
transmission electron microscopy
Steel
Focused ion beams
austenite
Field emission
Austenite
Metal foil

All Science Journal Classification (ASJC) codes

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

これを引用

Effect of Mn depletion on intra-granular ferrite transformation in heat affected zone of welding in low alloy steel. / Shigesato, G.; Sugiyama, M.; Aihara, S.; Uemori, R.; Tomita, Y.

:: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 巻 87, 番号 2, 02.2001, p. 93-100.

研究成果: ジャーナルへの寄稿記事

@article{af2016747d8743fcbbdcc67c5cc79ca0,
title = "Effect of Mn depletion on intra-granular ferrite transformation in heat affected zone of welding in low alloy steel",
abstract = "Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass{\%} depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.",
author = "G. Shigesato and M. Sugiyama and S. Aihara and R. Uemori and Y. Tomita",
year = "2001",
month = "2",
doi = "10.2355/tetsutohagane1955.87.2_93",
language = "English",
volume = "87",
pages = "93--100",
journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",
issn = "0021-1575",
publisher = "一般社団法人 日本鉄鋼協会",
number = "2",

}

TY - JOUR

T1 - Effect of Mn depletion on intra-granular ferrite transformation in heat affected zone of welding in low alloy steel

AU - Shigesato, G.

AU - Sugiyama, M.

AU - Aihara, S.

AU - Uemori, R.

AU - Tomita, Y.

PY - 2001/2

Y1 - 2001/2

N2 - Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.

AB - Role of Mn depleted zone formed around MnS precipitate in austenite (γ) in transformation of Intra-Granular Ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld Heat Affected Zone (HAZ) has been studied. Mn distribution in γ adjacent to MnS were examined by Field-Emission type Transmission Electron Microscopy (FE-TEM) with Energy Dispersive X-ray Spectroscopy (EDS). Foil samples for TEM observation were prepared using Focused Ion Beam (FIB) in order to prevent ununiformity of thinning rate of MnS and steel, and to thin the nucleation site of IGF specified by optical or scanning electron microscopic observations. The authors demonstrated the direct measurement of Mn depleted zone at IGF nucleation site. Mn depletion varied from 0 to 0.4 mass% depending on annealing temperature and holding time at γ phase region. Calculated concentration profiles of Mn near the depleted zone for various thermal cycles showed good agreement with experimental results. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that formation of IGF was controlled mainly by the Mn depletion effect in low alloy steels.

UR - http://www.scopus.com/inward/record.url?scp=0035247295&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035247295&partnerID=8YFLogxK

U2 - 10.2355/tetsutohagane1955.87.2_93

DO - 10.2355/tetsutohagane1955.87.2_93

M3 - Article

AN - SCOPUS:0035247295

VL - 87

SP - 93

EP - 100

JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

SN - 0021-1575

IS - 2

ER -