Premium
AN ASSESSMENT OF A MICRO‐MECHANIC MODEL OF HYDROGEN‐INDUCED STRESS CORROSION CRACKING, BASED ON A STUDY OF AN X65 LINE PIPE STEEL
Author(s) -
Cole I. S.,
Andenna C.
Publication year - 1994
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1994.tb00228.x
Subject(s) - stress corrosion cracking , cracking , materials science , corrosion , metallurgy , stress intensity factor , intensity (physics) , hydrogen , stress (linguistics) , hydrogen embrittlement , line (geometry) , composite material , fracture mechanics , chemistry , linguistics , physics , philosophy , organic chemistry , quantum mechanics , geometry , mathematics
— The susceptibility of an X65 line pipe steel to hydrogen‐induced stress corrosion cracking (SCC) is investigated. SCC tests on the steel are carried out in three environments of different aggressivity based on a NACE TM‐01‐77 solution with dissolved gaseous H 2 S. The threshold stress intensity factor is calculated for each environment using the multiple specimen technique. The steel is tested in the as‐received condition and after homogenisation. Permeation tests are carried out on specimens of the same steel in the same environment. The relationship between threshold stress intensity factor and hydrogen concentration is obtained. The results from these studies are used to generate the parameters in the micro‐mechanic model of Akhurst and Baker. The validity and physical significance of the model is assessed.