Effect of hydrogen and stress concentration on the notch tensile strength of AISI 4135 steel

Maoqiu Wang, Eiji Akiyama, Kaneaki Tsuzaki

研究成果: Article査読

162 被引用数 (Scopus)

抄録

The quantitative relationship between notch tensile strength and diffusible hydrogen content has been investigated for the AISI 4135 steel at 1320 MPa. The notch tensile strength was obtained by means of a slow strain rate test on circumferentially notched round bar specimens with stress concentration factors of 2.1, 3.3 and 4.9 after hydrogen charging, and the diffusible hydrogen content was then measured by thermal desorption spectrometry analysis. The diffusible hydrogen has been found to decrease the notch tensile strength in a power law manner, and the decrease is more prominent at a higher stress concentration factor. The finite element analysis results of stress and hydrogen distributions in the vicinity of the notch root have shown that the local fracture stress decreases with increasing local hydrogen concentration as the diffusible hydrogen content or stress concentration factor increases, resulting in the decrease in the notch tensile strength.

本文言語English
ページ(範囲)37-46
ページ数10
ジャーナルMaterials Science and Engineering A
398
1-2
DOI
出版ステータスPublished - 2005 5 25
外部発表はい

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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