SUS304のMgCl₂液滴中におけるSCC過程のその場観察とAE源の検討

• 志波 光晴

  独立行政法人物質・材料研究機構

• 升田 博之

  独立行政法人物質・材料研究機構

• 山脇 寿

  独立行政法人物質・材料研究機構

• 伊藤 海太

  東京大学大学院工学研究科マテリアル工学専攻

• 榎 学

  東京大学大学院工学研究科マテリアル工学専攻

書誌事項

タイトル別名

• <i>In-Situ</i> Observation and Acoustic Emission Analysis for SCC of MgCl₂ Droplet in SUS304 Stainless Steel
• In-Situ Observation and Acoustic Emission Analysis for SCC of MgCl2 Droplet in SUS304 Stainless Steel

抄録

  Acoustic emission and optical video microscope monitoring was proposed to investigate the stress corrosion cracking of work-hardened SUS304 stainless steel caused by a small magnesium-chloride droplet. The crack propagation length could measure clearly under the droplet by VMS. The SCC started at 45–82 ks with pitting. The crack velocity was 3.2–4.7 µm/ks and it propagated almost continuously. AE signals were generated at early stage of SCC testing of 55 ks and 82 ks, after that they were generated discontinuously. With the SEM observations, the detected AE signals were mainly attributed to cracking of the oxidation products and discontinuous crack propagation at the falling-off surface grain.<br>

収録刊行物

• 日本金属学会誌

  日本金属学会誌 76 (9), 535-540, 2012

  公益社団法人 日本金属学会

キーワード

• stress corrosion cracking
• droplet
• SUS304 stainless steel
• acoustic emission
• <i>in-situ</i> optical observation

詳細情報

• CRID: 1390282681458907008
• NII論文ID: 130004456330
• DOI: 10.2320/jinstmet.76.535
• COI: 1:CAS:528:DC%2BC38Xhs1WmsbrP
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet/76/9/76_535/_pdf
• 本文言語コード: ja
• データソース種別:
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  • Crossref
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• 抄録ライセンスフラグ: 使用不可