書誌事項
- タイトル別名
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- Mechanism of Acicular Ferrite Formation in Low Carbon Steel Ti-B Weld Metals with Different Oxygen Levels
- 酸素量の異なるTi-B系低炭素鋼溶接金属におけるアシキュラーフェライト生成機構
- サンソリョウ ノ コトナル Ti Bケイ テイタンソ コウ ヨウセツ キンゾク ニ オケル アシキュラー フェライト セイセイ キコウ
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Inclusions contributing to acicular ferrite nucleation were investigated from a crystallographic point of view to understand the formation mechanism for acicular ferrite microstructure in mild and low alloy steel weld metals.<br>The samples with different oxygen content in Ti–B weld metal were prepared in this study. In those samples, intragranular acicular ferrite formation was observed from some inclusions and acicular ferrite had Kurdjumov–Sachs orientation relationship with austenite matrix. The inclusions contributing to acicular ferrite nucleation were multi-phase type consisting of amorphous phase and MnS. They were surrounded by a Ti-enriched layer. It was confirmed by selected area diffraction patterns and analysis of EDS that the Ti-enriched layer was TiO. The acicular ferrite had Baker–Nutting orientation relationship with TiO layer on the inclusion surface. The misfit was 3.0% at the interface between the acicular ferrite and TiO.<br>Therefore, it is considered that the TiO on the inclusion surface contributes to the heterogeneous nucleation of acicular ferrite by small lattice misfit.
収録刊行物
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- 鉄と鋼
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鉄と鋼 96 (10), 608-613, 2010
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390282680103823744
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- NII論文ID
- 130000450234
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- NII書誌ID
- AN10528571
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- ISSN
- 1341688X
- 18832954
- 00211575
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- COI
- 1:CAS:528:DC%2BC3cXht12rsL%2FM
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- NDL書誌ID
- 10853879
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可