Study on improvement of corrosion fatigue strength of Mg alloy due to surface modification method

• Project/Area Number: 20560069
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: University of Toyama
• Principal Investigator: ISHIHARA Sotomi University of Toyama, 大学院・理工学研究部(工学), 教授 (60019221)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 疲労 / 腐食疲労 / 陽極酸化処理 / 塗装処理 / 分極挙動 / Mg合金 / 陽極酸化被膜処理 / き裂発生 / き裂進展 / ペイント法 / メッキ処理

Research Abstract

It was clarified that corrosion fatigue strength of Mg alloy was significantly improved by electro-Ni plating on the specimen surface. In addition, anodizing of the Mg alloy is not expected to improve the corrosion fatigue strength. However hybrid treatment, i.e., anodizing and painting treatments is effective to improve the corrosion fatigue strength.

Research Products

• [Journal Article] Corrosion fatigue resistance of an electrolytically-plated magnesium alloy (2010)
  • Author(s): S.Ishihara, T.Namito, H.Notoya, A.Okada
  • Journal Title: 学術誌International Journal of Fatigue 32巻,8号 Pages: 1299-1305
• [Journal Article] Corrosion fatigue resistance of magnesium alloy with electrolytic Ni-plating (2010)
  • Author(s): S.Ishihara, T.Namito, H.Notoya, A.Okada, T.Goshima
  • Journal Title: International Journal of Fatigue 32 Pages: 1299-1305
  • Peer Reviewed
• [Journal Article] Effect of load ratio on fatigue lives and crack propagation behavior of the extruded magnesium alloy (2009)
  • Author(s): S.Ishihara, A.J.McEvily, et al.
  • Journal Title: 学術誌International Journal of Fatigue 31巻 Pages: 1788-1794
• [Journal Article] Effect of Load Ratio on Fatigue Lives and Crack Propagation Behavior of the Extruded Magnesium Alloy (2009)
  • Author(s): S.Ishihara, A.J.McEvily, M.Sato, K.Taniguchi, T.Goshima
  • Journal Title: International Journal of Fatigue 31 Pages: 1788-1794
  • Peer Reviewed
• [Journal Article] Effect of Texture on Fatigue Behavior of Magnesium Alloy (2008)
  • Author(s): K. Taniguchi, S. Ishihara H. Yamagishi, T. Goshima
  • Journal Title: Proc. of the Asian Conf. on Mechanics of Functional Materials and Structures Pages: 245-248
  • Peer Reviewed
• [Presentation] 陽極酸化並びに塗装処理によるMg合金表面改質材の腐食疲労強度の改善と破壊機構に関する研究 (2011)
  • Author(s): 波戸友徳, 石原外美, ほか
  • Organizer: 日本機械学会北陸信越支部第48期総会・講演会
  • Place of Presentation: 信州大学繊維学部
  • Year and Date: 2011-03-05
• [Presentation] 陽極酸化並びに塗装処理によるMg合金表面改質材の腐食疲労強度の改善と破壊機構に関する研究 (2011)
  • Organizer: 日本機械学会北陸信越支部第48期総会・講演会
• [Presentation] 陽極酸化処理を施したMg合金AZ31の腐食疲労挙動に関する研究 (2010)
  • Organizer: 日本機械学会北陸信越支部第47期総会・講演会
• [Presentation] 陽極酸化処理を施したMg合金の腐食疲労特性に及ぼす陽極酸化膜厚さの影響 (2010)
  • Organizer: 日本機械学会2010年度年次大会
• [Presentation] Mg合金メッキ材の静的腐食抵抗と腐食疲労特性に関する研究 (2010)
  • Organizer: 日本機械学会M&M2010材料力学カンファレンス
• [Presentation] 陽極酸化処理を施したMg合金の腐食疲労特性に及ぼす陽極酸化膜厚さの影響 (2010)
  • Author(s): 波戸友徳, 石原外美, ほか
  • Organizer: 日本機械学会2010年度年次大会
  • Place of Presentation: 名古屋工業大学
• [Presentation] Mg合金メッキ材の静的腐食抵抗と腐食疲労特性に関する研究 (2010)
  • Author(s): 波戸友徳, 石原外美, ほか
  • Organizer: 日本機械学会M&M2010材料力学カンファレンス
  • Place of Presentation: 長岡技科大学
• [Presentation] マグネシウム合金のメッキ処理による腐食疲労強度改善に関する研究 (2009)
  • Author(s): 波戸友徳, 石原外美, 能登谷久公, 五嶋孝仁
  • Organizer: 日本機械学会 北信越支部第46期総会・講演会講演論文集[No. 097-1], pp1-2
  • Place of Presentation: 富山
  • Year and Date: 2009-03-07
• [Presentation] メッキ処理を施したマグネシウム合金におけるメッキ欠陥からの疲労き裂発生と進展挙動に関する研究 (2009)
  • Organizer: 日本機械学会2009年度年次大会
• [Presentation] Effect of texture on fatigue behavior of magnesium alloy (2008)
  • Author(s): K.Taniguchi, S.Ishihara, et al.
  • Organizer: Proc.of the Asian Conf.on Mechanics of Functional Materials and Structures(pp.245-248)
• [Book] Improvement in Corrosion Fatigue Resistance of Mg Alloy due to Plating(Corrosion and Surface Treatments)(edited by Frank Czerwinsky, Chapter 12) (2011)
  • Author(s): Sotomi Ishihara, Hisakimi Notoya, Tomonori Namito
  • Publisher: Magnesium Alloys
• [Book] Magnesium Alloys (Corrosion and Surface Treatments) edited by Frank Czerwinsky (2011)
  • Author(s): S.Ishihara, H.Notoya, T.Namito
  • Publisher: InTech