ON FATIGUE  CRACK PROPAGATION  IN HSLA STEELS

Amirat, A.; Chaoui, K.; Plumbridge, W.j.

Synthèse
Volume 11, Numéro 1, Pages 43-54
2005-06-30

On Fatigue Crack Propagation In Hsla Steels

Authors : Amirat A. . Chaoui K. . Plumbridge W.j. .

Abstract

Corrosion fatigue crack growth rates in 3.5% NaCI water solution have been investigated on high tensile low alloy steel used for mining chains. The aim of this study is to show the effect of a corrosive environment on the relationship between the Paris-Erdogan (C and n). It is found that a linear behavior is obtained in air and corrosive environment. Meanwhile the fatigue corrosion process results in increasing values of C by a factor of 10 for the same value of n in air. This finding is confirmed using data from literature for 35 NCO 16, SAE 51100 steels.