粒界性格制御によるオーステナイト系ステンレス鋼の腐食特性の改善

• 王 昀

  (株)日立製作所

• 金田 潤也

  (株)日立製作所

• 笠原 茂樹

  (株)日立製作所

• 茂中 尚登

  日立 GE ニュークリア・エナジー(株)

書誌事項

タイトル別名

• Improvement of Corrosion Resistance in Austenitic Stainless Steel by Grain Boundary Character Distribution Control

抄録

Strauss test, Coriou test and Huey test were conducted on a Type 316L austenitic stainless steel. Improvement in grain boundary corrosion resistance was verified after raising low Σ coincidence site lattice (CSL) grain boundary (GB) frequency by controlling grain boundary character distribution (GBCD). During crevice corrosion test under gamma-ray irradiation, initiation frequency of GB corrosion after GBCD controlled specimens decreased to 1/10 of GBCD uncontrolled counterpart along with lower depth of corrosion. Stress corrosion cracking (SCC) propagation rate of GBCD controlled specimen decreased to less than 1/2 of GBCD uncontrolled specimen in high temperature and high pressure water. Based on these results, we expect that GBCD control will improve corrosion resistance of austenitic material in a wide range of application and environment.

収録刊行物

• Ｚａｉｒｙｏ‐ｔｏ‐Ｋａｎｋｙｏ

  Ｚａｉｒｙｏ‐ｔｏ‐Ｋａｎｋｙｏ 61 (9), 359-365, 2012

  公益社団法人 腐食防食学会

キーワード

• オーステナイト系ステンレス鋼
• 粒界性格制御
• 対応粒界
• 粒界腐食
• すきま腐食
• 応力腐食割れ

詳細情報

• CRID: 1390001206259107968
• NII論文ID: 130004503132
• DOI: 10.3323/jcorr.61.359
• COI: 1:CAS:528:DC%2BC38XhsFOnu7bL
• ISSN: 18819664
• ISSN: 09170480
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可