The role of Mn depletion in intra-granular ferrite transformation in the heat affected zone of welded joints with large heat input in structural steels

Hidesato Mabuchi, Ryuji Uemori, Masaaki Fujioka

研究成果: Contribution to journalArticle査読

164 被引用数 (Scopus)

抄録

Intra-Granular Ferrite (IGF) transformation in the Heat Affected Zone (HAZ) of welded joints has been practically applied in structural steels, but the mechanism of IGF nucleation has not been elucidated yet. Then, the role of Mn depletion was investigated to elucidate the mechanism of IGF nucleation. It was first demonstrated to prove the direct evidence of Mn depletion at the interface of MnS/ferrite matrix by the nano-probe analysis of Field-Emission Transmission Electron Microscope equipped with Energy Dispersive X-ray Spectroscopy (FE-TEM-EDS). The presence of Mn depletion is also believed to promote IGF nucleation at the interface of MnS newly precipitated on (Mn, Si) oxide, which is considered to have no coherency with ferrite matrix.

本文言語英語
ページ(範囲)1406-1412
ページ数7
ジャーナルisij international
36
11
DOI
出版ステータス出版済み - 1996
外部発表はい

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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