| タイトル | Impact fracture behavior of duplex stainless steel weldment |
| その他のタイトル | 2相ステンレス鋼溶接部の衝撃破壊挙動 |
| 著者（日） | 北川 良彦; 黒田 敏雄; 高橋 誠; 池内 建二 |
| 著者（英） | Kitagawa, Yoshihiko; Kuroda, Toshio; Takahashi, Makoto; Ikeuchi, Kenji |
| 著者所属（日） | 大阪大学接合科学研究所; 大阪大学接合科学研究所; 大阪大学接合科学研究所; 大阪大学接合科学研究所 |
| 著者所属（英） | Joining and Welding Research Institute, Osaka University; Joining and Welding Research Institute, Osaka University; Joining and Welding Research Institute, Osaka University; Joining and Welding Research Institute, Osaka University |
| 発行日 | 2003-07 |
| 刊行物名 | Transactions of JWRI
Transactions of JWRI |
| 巻 | 32 |
| 号 | 1 |
| 開始ページ | 119 |
| 終了ページ | 120 |
| 刊行年月日 | 2003-07 |
| 言語 | eng |
| 抄録 | Weld simulation has been performed to improve the lowering of the toughness in the heat affected zone of super duplex stainless steel by increasing of austenite volume fraction. The cooling rate of the weld bond region was controlled by varying the cooling time from 1,473 K to 1,073 K (Delta-t(sub 12-8)). Austenite content was increased to as much as the base metal by using slow cooling rate (Delta-t(sub 12-8) = 114 s). However the toughness was not restored by the increase of austenite. The ferrite grain size also increased by using a slow cooling rate. The apparent size of ferrite grains was almost constant through the cooling rates by the austenite formed intragranularly. It is considered that the toughness of duplex stainless steel is influenced by austenite distribution. |
| キーワード | duplex stainless steel; toughness; fracture strength; austenite; ferrite; HAZ; Charpy impact test; research and development; SEM; cooling rate; impact fracture behavior; temperature dependence; 2重ステンレス鋼; 強靭; 破壊強度; オーステナイト; フェライト; HAZ; Charpy衝撃試験; 研究開発; SEM; 冷却速度; 衝撃破断挙動; 温度依存性 |
| 資料種別 | Conference Paper |
| ISSN | 0387-4508 |
| SHI-NO | AA0046276027 |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/46337 |
