Microstructural control of weld heat-affected zone of steel by Mn depletion around non-metallic inclusions

Shuji Aihara, Genichi Shigesato, Masaaki Sugiyama, Ryuji Uemori

Research output: Contribution to journalReview article

Abstract

Role of Mn depleted zone formed around MnS precipitate in transformation of intra-granular ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld heat-affected zone (HAZ) was studied. Mn distribution in austenite (γ) adjacent to MnS were examined by field-emission type transmission electron microscope (FE-TEM) with energy dispersive X-ray spectroscopy (EDS). Foil samples for TEM were prepared using focused ion beam (FIB), which enabled a direct measurement of Mn concentration profiles near MnS. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that the formation of IGF was controlled strongly by the Mn depletion effect in low alloy steels.

Original languageEnglish
Pages (from-to)43-48
Number of pages6
JournalNippon Steel Technical Report
Issue number91
Publication statusPublished - Jan 2005
Externally publishedYes

Fingerprint

Steel
Heat affected zone
Ferrite
Welds
High strength steel
Focused ion beams
Field emission
Austenite
Metal foil
Precipitates
Energy dispersive spectroscopy
Electron microscopes
Transmission electron microscopy
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

Microstructural control of weld heat-affected zone of steel by Mn depletion around non-metallic inclusions. / Aihara, Shuji; Shigesato, Genichi; Sugiyama, Masaaki; Uemori, Ryuji.

In: Nippon Steel Technical Report, No. 91, 01.2005, p. 43-48.

Research output: Contribution to journalReview article

@article{7359f62451eb4cc5931ba59f833110bc,
title = "Microstructural control of weld heat-affected zone of steel by Mn depletion around non-metallic inclusions",
abstract = "Role of Mn depleted zone formed around MnS precipitate in transformation of intra-granular ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld heat-affected zone (HAZ) was studied. Mn distribution in austenite (γ) adjacent to MnS were examined by field-emission type transmission electron microscope (FE-TEM) with energy dispersive X-ray spectroscopy (EDS). Foil samples for TEM were prepared using focused ion beam (FIB), which enabled a direct measurement of Mn concentration profiles near MnS. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that the formation of IGF was controlled strongly by the Mn depletion effect in low alloy steels.",
author = "Shuji Aihara and Genichi Shigesato and Masaaki Sugiyama and Ryuji Uemori",
year = "2005",
month = "1",
language = "English",
pages = "43--48",
journal = "Nippon Steel Technical Report",
issn = "0300-306X",
publisher = "Nippon Steel Corporation",
number = "91",

}

TY - JOUR

T1 - Microstructural control of weld heat-affected zone of steel by Mn depletion around non-metallic inclusions

AU - Aihara, Shuji

AU - Shigesato, Genichi

AU - Sugiyama, Masaaki

AU - Uemori, Ryuji

PY - 2005/1

Y1 - 2005/1

N2 - Role of Mn depleted zone formed around MnS precipitate in transformation of intra-granular ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld heat-affected zone (HAZ) was studied. Mn distribution in austenite (γ) adjacent to MnS were examined by field-emission type transmission electron microscope (FE-TEM) with energy dispersive X-ray spectroscopy (EDS). Foil samples for TEM were prepared using focused ion beam (FIB), which enabled a direct measurement of Mn concentration profiles near MnS. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that the formation of IGF was controlled strongly by the Mn depletion effect in low alloy steels.

AB - Role of Mn depleted zone formed around MnS precipitate in transformation of intra-granular ferrite (IGF) in low alloy steel subjected to simulated thermal cycle of weld heat-affected zone (HAZ) was studied. Mn distribution in austenite (γ) adjacent to MnS were examined by field-emission type transmission electron microscope (FE-TEM) with energy dispersive X-ray spectroscopy (EDS). Foil samples for TEM were prepared using focused ion beam (FIB), which enabled a direct measurement of Mn concentration profiles near MnS. Change in area fraction of IGF with thermal cycle conditions was well explained by the extent of Mn depletion. It was concluded that the formation of IGF was controlled strongly by the Mn depletion effect in low alloy steels.

UR - http://www.scopus.com/inward/record.url?scp=23744438818&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23744438818&partnerID=8YFLogxK

M3 - Review article

AN - SCOPUS:23744438818

SP - 43

EP - 48

JO - Nippon Steel Technical Report

JF - Nippon Steel Technical Report

SN - 0300-306X

IS - 91

ER -