Sulfide stress cracking resistance of API-X100 high strength low alloy steel

M. Al-Mansour, A. M. Alfantazi, M. El-boujdaini

Research output: Contribution to journalArticlepeer-review

108 Scopus citations

Abstract

Sulfide Stress Cracking (SSC) of API-X100 high strength low alloy steel was evaluated in NACE solution "A" at room temperature. The corrosion rate, utilizing electrochemical polarization techniques, in the solution was 97 mpy. Proof ring testing, per NACE TM-0177, generated an SSC threshold stress value of 46% of yield strength. SSC susceptibility was caused by the high corrosion rate which formed corrosion pits that acted as crack initiation sites on the metal surface and provided more hydrogen to migrate into the steel. In addition, the X100 inhomogeneous microstructure provided a high density of hydrogen traps which promoted hydrogen embrittlement.

Original languageBritish English
Pages (from-to)4088-4094
Number of pages7
JournalMaterials and Design
Volume30
Issue number10
DOIs
StatePublished - Dec 2009

Keywords

  • Corrosion
  • Environmental performance
  • Ferrous metals and alloys
  • Microstructure

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