Premium
A study of competitive anion adsorption at the tip of a crack in stress corrosion cracking of AI 27‐1 alloy
Author(s) -
Marichev V. A.
Publication year - 1983
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19830340305
Subject(s) - materials science , stress corrosion cracking , hydrogen embrittlement , corrosion , environmental stress fracture , cracking , alloy , metallurgy , chloride , aluminium , hydrogen , adsorption , stress (linguistics) , composite material , chemistry , linguistics , philosophy , organic chemistry
A method to determine chloride ion concentration adsorbed at the tip of crack in stress corrosion cracking of AI27‐1 aluminium alloy in chromic acid based solutions is discussed. The dependance of hydrogen permeability of passivating film at the tip of crack on the concentration of adsorbed chloride ions is the backbone of the method. Critical stress intensity factor, K HE , and critical crack growth rate, V cr data form an experimental base for the method and are a necessary prerequisite of hydrogen embrittlement as the main mechanism of cracking in stress corrosion conditions.