Materials designfor energy systems based on interface integrity

• Project/Area Number: 19686012
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Materials/Mechanics of materials
• Research Institution: Tohoku University
• Principal Investigator: SUZUKI Ken Tohoku University, 大学院・工学研究科, 助教 (40396461)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥23,270,000 (Direct Cost: ¥17,900,000、Indirect Cost: ¥5,370,000); Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2008: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2007: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
• Keywords: 材料設計 / プロセス / 物性 / 評価 / 応力腐食割れ / 反応ダイナミクス / 量子分子動力学法

Research Abstract

Computational chemistry approach was applied to study the mechanism of Stress Corrosion Cracking (SCC). Enhanced chemical reactions and diffusion of oxygen atoms due to strain were found to be one of the important factors in the crack growth process of SCC. Hafnium was suggested to be effective element for the formation of stable oxide film and the decrease of strain-enhanced oxygen diffusion.

Research Products

• [Journal Article] Early stage SCC initiation analysis of fcc Fe-Cr-Ni ternary alloy at 288℃: A quantum chemical molecular dynamics approach (2009)
  • Author(s): Nishith Kumar Das, Ken Suzuki, Kazuhiro Ogawa, Tetsuo Shoji
  • Journal Title: Corrosion Science 51 Pages: 908-913
  • Peer Reviewed
• [Journal Article] Creep Damage Process of Ni-Base Superalloy Caused by Stress-Induced Anisotropic Atomic Diffusion (2009)
  • Author(s): Ken Suzuki, Hiroyuki Ito, Tatsuya Inoue, Hideo Miura
  • Journal Title: Journal of Solid Mechanics and Materials Engineering 3 Pages: 487-497
  • NAID: 130000106326
  • Peer Reviewed
• [Journal Article] Creep Damage Process of Ni-Base Superalloy Caused by Stress-Induced Anisotropic Atomic Diffusion (2009)
  • Author(s): Ken Suzuki
  • Journal Title: Journal of Solid Mechanics and Materials Engineering 3 Pages: 487-497
  • NAID: 130000106326
  • Peer Reviewed
• [Journal Article] Creep and fatigue damages of Ni-base superalloy caused by strain-induced anisotropic diffusion of component elements (2009)
  • Author(s): Hideo Miura
  • Journal Title: Key Engineering Materials 417(418) Pages: 261-264
  • Peer Reviewed
• [Journal Article] Early stage SCC initiation analysis of fcc Fe-Cr-Ni ternary alloy at 288 C : A quantum chemical molecular dynamics approach (2009)
  • Author(s): Nishith Kumar Das
  • Journal Title: Corrosion Science 51 Pages: 908-913
  • Peer Reviewed
• [Journal Article] Quantum Chemical Molecular Dynamics study of stress corrosion cracking behaviour for fcc Fe and Fe-Cr surfaces (2008)
  • Author(s): Nishith Kumar Das, Ken. Suzuki, Yoichi. Takeda, Kazuhiro Ogawa, Tetsuo. Shoji
  • Journal Title: Corrosion Science 50(6) Pages: 1701-1706
  • Peer Reviewed
• [Journal Article] Quantum Chemical Molecular Dynamics Study of Stress Corrosion Cracking Behavior for fcc Fe and Fe-Cr Surfaces (2008)
  • Author(s): Nishith Kumar Das
  • Journal Title: Corrosion Science 50 Pages: 1701-1706
  • Peer Reviewed
• [Journal Article] "Quantum Chemical Molecular Dynamics Study of Stress Corrosion Cracking Behavior for fcc Fe and Fe-Cr Surfaces" (2008)
  • Author(s): Nishith Kumar Das
  • Journal Title: Corrosion Science (印刷中)
  • Peer Reviewed
• [Presentation] オーステナイト系ステンレス鋼酸化皮膜の高温水中組織変化に関する原子レベルシミュレーション (2010)
  • Author(s): 鈴木研, 佐々木大和, 三浦英生
  • Organizer: 日本機械学会東北支部第45期総会
  • Place of Presentation: 東北大学
  • Year and Date: 2010-03-12
• [Presentation] 異種材料界面におけるひずみ誘起異方的増速拡散現象 (2010)
  • Author(s): 佐々木大和, 村田直一, 鈴木研, 三浦英生
  • Organizer: 日本機械学会東北支部第45期総会
  • Place of Presentation: 東北大学
  • Year and Date: 2010-03-12
• [Presentation] Quantum Chemical Molecular Dynamics Analysis of Environmental Assisted Oxidation of Stainless Steel (2009)
  • Author(s): Ken Suzuki, Yoiichi Takeda, Hideo Miura, Tetsuo Shoji
  • Organizer: The 1st International Workshop on Evaluation of Environmental Degradation of Materials and Proactive Aging Management
  • Place of Presentation: Tokyo Branch Office of Tohoku University
  • Year and Date: 2009-06-04
• [Presentation] 異種材料界面近傍における応力起因異方的原子拡散メカニズムの基礎検討 (2009)
  • Author(s): 佐々木大和, 村田直一, 鈴木研, 三浦英生
  • Organizer: 日本機械学会東北学生会第39回卒業研究発表講演会
  • Place of Presentation: 秋田県立大学
  • Year and Date: 2009-03-06
• [Presentation] Quantum chemical molecular dynamics study of strain effect on the oxygen diffusion in fcc Fe(111)and Fe-Cr(111)surfaces at 288℃ (2009)
  • Author(s): Nishith Kumar Das
  • Organizer: 12th International Conference on Fracture
  • Place of Presentation: Ottawa Canada
• [Presentation] Ni耐熱合金における応力依存異方拡散現象と微量添加元素の影響 (2008)
  • Author(s): 鈴木研, 伊藤大幸, 井上達也, 三浦英生
  • Organizer: 日本機械学会M&M2008材料力学カンファレンス
  • Place of Presentation: 立命館大学
  • Year and Date: 2008-09-17