Evaluation of Scc Susceptibility of Ht80 in Synthetic Sea Water by Means of Ssrt

Mikio Saito, Tetsuo Shoji, Hideaki Takahashi, Kenzou Miura, Makoto Kumada

Research output: Contribution to journalArticle

Abstract

Slow strain rate tests (SSRT) have been carried out on high strength steel HT80 in air and the synthetic sea water at the free corrosion potential Ecorr, and cathodic protection potential, Specimens tested were subjected to fractographic examination to examine SCC crack on a fracture surface. The objectives of this study were to investigate the suitable cathodic protection condition and its dependence upon the flow condition of sea water. Furthermore, emphasis was placed on finding the most suitable evaluation parameters for SCC susceptibility from SSRT characteristics, considering the effect of size. From this study, fracture mechanisms seems to be changed with shifting potential to the cathodic direction, and maximum crack length was increased at more basic potentials. It was found that the most suitable parameters to evaluate SCC susceptibility are reduction in area Ra and the maximum crack length da.

Original languageEnglish
Pages (from-to)746-752
Number of pages7
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume54
Issue number500
DOIs
Publication statusPublished - 1988 Jan 1

Keywords

  • Cathodic Protection
  • Crack
  • Fractography
  • Fracture
  • High Strength Steel
  • Reduction Area
  • Sea Water
  • Size Effect
  • Slow Strain Test
  • Stress Corrosion Cracking

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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