Accession Number:

ADA127423

Title:

Fatigue Crack Propagation in an HSLA Steel (MF-80) in Air and in Salt Water.

Descriptive Note:

Memorandum rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1983-04-21

Pagination or Media Count:

25.0

Abstract:

Fatigue crack propagation was studied in MF-80 HSLA steel in ambient room air and in 3.5 percent NaC1 salt water. Region-II fatigue crack growth rate dadN data were obtained at two load ratios, R0.10 and R 0.67. dadN values were found to be affected by both load ratio and environment, with the greatest effect being caused by the combination of high load ratio and salt water environment. Overall, the results of this study suggest that MF-80 HSLA steel may have slightly less Region-II fatigue crack propagation resistance than other high-strength steels of comparable strength.

Subject Categories:

  • Properties of Metals and Alloys
  • Marine Engineering
  • Test Facilities, Equipment and Methods
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE