Stress corrosion crack initiation testing with tapered specimens in high-temperature water – results of a collaborative research project

Abstract

Zajec (2020): Stress corrosion crack initiation testing with tapered specimens in high-temperature waterresults of a collaborative research project, Corrosion Engineering, Science and Technology,

Investigation of surface treatment effects on the environmentally-assisted cracking behaviour of Alloy 182 in boiling water reactor environment

“…For screening purposes, accelerated EAC initiation tests were performed in order to obtain the EAC critical stress in a relatively short time frame. The CERT tests served as a screening for future constant load tests, which could further verify and validate the EAC critical stress [15]. The CERT test is an accelerated environmental test technique, applying mechanical strain at a suitably low strain rate stimulating and accelerating the initiation of EAC cracks.…”

“…This accelerated EAC initiation testing technique has been further developed in the framework of another collaborative research initiative (MICRIN) and more details can be found in Ref. [15]. The EAC critical stress is intended as a comparative parameter to evaluate the EAC initiation susceptibility for the different applied surface treatments.…”

Environmentally assisted cracking in the low pressure superheated hydrogen steam

“…Proto se pracuje s termínem nominální rychlost deformace (rychlost prodloužení, případně posunutí nebo posunu), která je vztažená k měřící základně vzorku. Důkladně je tato problematika řešena v [20]. Předpokládá se, že extrapolace na velmi nízkou ("téměř statickou") nominální rychlost deformace by se podobala prahové hodnotě "konstantního zatížení", tj.…”

Analysis of environmentally assisted crack initiation of Alloy 182 in simulated light water reactor primary water with the engineering initiation model EngInit

“…The data used in this article stem from two projects, MICRIN+ [9] and MEACTOS [10]. At the origin of these projects lay MICRIN [11].…”

“…The history of constant extension rate testing dates back a long time [13][14][15][16] and so does the history of tapered specimens [17]. Both have yielded interpretations in respect of the influence of material and environment on EAC initiation [9,11,[18][19][20][21]. However, both have majorly been used for screening the material performance in a given environment.…”