This paper presents a rational method for a quantitative characterization of intergranular stress corrosion cracking (IGSCC) from results of constant extension rate tests (CERTs). The basic experimental datum used is the morphological information present in a specimen at the end of a CERT; this information is expressed by the crack trace depth distribution determined on a longitudinal section of the specimen. It is shown that this information can be deconvoluted to give access to crack initiation probability and crack growth rate data. Further developments lead to the calculation of intrinsic cracking parameters and finally to IGSCC damage prediction. An initial application of this method to the case of alloy 600 in an aqueous environment is also described.

Subject
Crack growth, Intergranular stress corrosion cracking, Tubes, Crack initiation, Stress cracking, Lead, Crack depth, Constants, Characterization tests, Cracking, Grain boundary, Cracks, Damage
Keywords:
alloy 600, alloy 690, autoclave, boric acid, corrosion, crack, constant extension rate (CERT), characterization, distribution function, grain boundary
National Association of Corrosion Engineers
1989
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