Evaluation of Corrosion Rate and Diffusible Hydrogen Content of High Tensile Steel under Loading with Corrosion Environment

• Kitahara Gaku

  Toyota Central R&D Labs., Inc., Material & Processing Dept. I

• Tsuji Aya

  Toyota Central R&D Labs., Inc., Material & Processing Dept. I

• Asada Takashi

  Toyota Central R&D Labs., Inc., Material & Processing Dept. I

• Suzuki Tomohiro

  Toyota Central R&D Labs., Inc., Material & Processing Dept. I

• Horikawa Keitaro

  Osaka University, Graduate School of Engineering Science, Department of Mechanical Science and Bioengineering, Division of Nonlinear Mechanics

• Kobayashi Hidetoshi

  Osaka University, Graduate School of Engineering Science, Department of Mechanical Science and Bioengineering, Division of Nonlinear Mechanics

Bibliographic Information

Other Title

• 腐食環境下で応力付与した高張力鋼板の腐食速度と拡散性水素の評価
• フショク カンキョウ カ デ オウリョク フヨ シタ コウチョウリョク コウバン ノ フショク ソクド ト カクサンセイ スイソ ノ ヒョウカ

Abstract

Corrosion rate and diffusible hydrogen content of high tensile steel under constant load testing （CLT） in pH2 corrosive solution were investigated using electrochemical impedance spectroscopy （EIS） and thermal desorption spectroscopy （TDS）. R_p^－1 which is an index of corrosion rate increased as stress increased, which was correlated with the result of corrosion weight loss. This considered to be due to an increase in active nascent surfaces with increasing stress. Diffusible hydrogen content increased with stress, in particular by plastic deformation. The latter was more affected by the effect of corrosion rate and diffusible hydrogen content on stress. In other words, we have concluded that diffusible hydrogen content which related to hydrogen embrittlement was more affected by defects in steels by deformation than hydrogen entry from surface corrosion reaction in corrosion environment.

Journal

• Zairyo-to-Kankyo

  Zairyo-to-Kankyo 67 (4), 172-178, 2018-04-15

  Japan Society of Corrosion Engineering

Keywords

• high tensile steel
• corrosion rate
• Electrochemical Impedance Spectroscopy (EIS)
• diffusible hydrogen
• Thermal Desorption Spectroscopy (TDS)
• stress

Details

• CRID: 1390845713003656192
• NII Article ID: 130007494538
• NII Book ID: AN10235427
• DOI: 10.3323/jcorr.67.172
• ISSN: 18819664
• ISSN: 09170480
• NDL BIB ID: 029003194
• Web Site: http://id.ndl.go.jp/bib/029003194
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029003194
• Web Site: https://www.jstage.jst.go.jp/article/jcorr/67/4/67_172/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed