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オーステナイト系ステンレス鋼のクリープ損傷中の非線形音響特性と微細組織の変化
https://shonan-it.repo.nii.ac.jp/records/2000075
https://shonan-it.repo.nii.ac.jp/records/20000757dbe0793-fe15-43f6-aeab-17970fc26f44
名前 / ファイル | ライセンス | アクション |
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オーステナイト系ステンレス鋼のクリープ損傷中の非線形音響特性と微細組織の変化 (5 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2024-04-01 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | オーステナイト系ステンレス鋼のクリープ損傷中の非線形音響特性と微細組織の変化 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Creep-induced Nonlinear Acoustic Characterizations and Microstructural Change in an Austenitic Stainless Steel | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
言語 | ja | |||||
主題Scheme | Other | |||||
主題 | オーステナイト系ステンレス鋼 | |||||
キーワード | ||||||
言語 | ja | |||||
主題Scheme | Other | |||||
主題 | 非線形音響 | |||||
キーワード | ||||||
言語 | ja | |||||
主題Scheme | Other | |||||
主題 | 電磁超音波共鳴法 | |||||
キーワード | ||||||
言語 | ja | |||||
主題Scheme | Other | |||||
主題 | 非破壊評価 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Austenitic stainless steel | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Nonlinear acoustics | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Electromagnetic acoustic resonance | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Non-destructive evaluation | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者 |
大谷, 俊博
× 大谷, 俊博× OHTANI, Toshihiro |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 本研究では,電磁超音波共鳴法(Electromagnetic Acoustic Resonance EMAR)を用いて,オーステナイト系ステンレス鋼(JIS-SUS304)のクリープ損傷中の2つの非線形音響特性:共鳴周波数の振幅依存性と混合周波数応答の変化を調べ,それらの変化と組織変化の関係を明らかにした.EMARは共鳴法と非接触電磁超音波探触子(Electromagnetic Acoustic Transducer EMAT)を組み合わせたものである.板状試料の厚さ方向に伝搬する横波を送受信する体積波型横波EMATを用いた.測定された2つの非線形音響特性は,それぞれクリープ寿命の40%で最大値と60%で最小値を示した.これらの現象を,転位の回復,再結晶,再構築,クリープボイドの発生と成長という観点から解釈した.それらは,SEMとTEM観察から裏付けた.この非接触共鳴によるEMAT測定は,クリープ寿命を通して体積波横波の非線形性の進化をモニターすることができ,金属の損傷進化を評価し,クリープ寿命を予測する可能性がある. We investigated the evolutions of two nonlinear acoustic characterizations; the resonant frequency shift and the mixed frequency response, with electromagnetic acoustic resonance (EMAR) throughout the creep life in an austenitic stainless steel, JIS-SUS 304, and clarified the relationship between their evolutions and the microstructural changes. EMAR was a combination of the resonant acoustic technique with a non-contact electromagnetic acoustic transducer (EMAT). We used bulk-shear-wave EMAT, which transmits and receives shear-wave propagating in the thickness direction of a plate specimen. Two measured nonlinear acoustic characterizations showed the peaks at 40 % and the minimum at 60 % of the creep life, respectively. We interpreted these phenomena in terms of dislocation recovery, recrystallization, restructuring, and the initiation and growth of creep void, with support from the SEM and TEM observations. This noncontact resonance-EMAT measurement can monitor the evolution of the bulk-shear-wave nonlinearity throughout the creep life and has the potential to assess the damage evolution and predict the creep life of metals. |
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書誌情報 |
湘南工科大学紀要 SHONAN INSTITUTE OF TECHNOLOGY JOURNAL 巻 58, 号 1, p. 1-10, 発行日 2024-03-31 |
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出版者 | ||||||
出版者 | 湘南工科大学 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 09192549 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10400308 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |