CORROSION FATIGUE BEHAVIOUR OF STRUCTURAL MATERIALS IN VARIOUS ENVIRONMENTS CONTAINING H2S GAS

Corrosion fatigue strength of SUS 410J1 (13Cr stainless steel), SNCM 429, AISI 4330 (Ni-Cr-Mo steel) and Ti-6A1-4V alloy in a steam and a humid air containing H2S gas is discussed in terms of corrosion pits formed at the corrosion fatigue crack initiation area of base metal and weldment. Emphasis is placed on corrosion fatigue crack propagation behaviour os ship hull strucural steels such as KA36 (TMCP) and KAS steel in a crude oil containing H2S gas. It is demonstrated that the crack propagation rate in the base metal of KA36 (TMCP) and KAS steel is accelerated in a crude oil containing 400 ppm H2S. It is shown that the environmental enhancement of the crack propagation rage in a sour crude oil depends on hydrogen evolved by reaction between the ship hull structural steels and H2S gas in a crude oil.

• Supplemental Notes:
  • ISOPE 94, 4th Intl Offshore & Polar Engng Conf; 10-15 April 1994; Osaka, Japan. Sponsored by ISOPE, USA et al. Procs. Publ by ISOPE, ISBN 1-880653-14-1. Vol IV, p 250 [6 p, 13 ref, 8 fig]
• Authors:
  • WATANABE, E
  • Ebara, R
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Corrosion; Cracking; Fatigue (Mechanics); Gases; Steel structures
• Uncontrolled Terms: Crack initiation
• Old TRIS Terms: Corrosion fatigue
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00709877
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM