Near-threshold fatigue crack growth behavior of mil S-24645 HSLA steel and its weldments

Judith Todd Copley, L. Chen, E. Y. Yankov

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The near-threshold corrosion fatigue crack propagation behavior of Mil S-24645 HSLA steel, its weld metal and heat-affected zone have been studied in simulated marine environments. Tests were conducted in air and ASTMseawater, at both the free corrosion potential and − 1.0 V (SCE), using a frequency of 0.2 Hz and a stress ratio, R = 0.1. The results were compared with previous data for Mil S-24645 and ASTM A 710 steel tested at frequencies of 10 and 2 Hz. The influence of frequency, microstructure, and cathodic protection on crack closure contributions in the nearthreshold regime will be discussed.

Original languageEnglish (US)
Pages (from-to)154-161
Number of pages8
JournalJournal of Offshore Mechanics and Arctic Engineering
Volume115
Issue number3
DOIs
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Mechanical Engineering

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