Effects of surface treatments on environmentally-assisted cracking susceptibility of Alloy 182 in BWR environment

Z. Que; L. Volpe; A. Toivonen; M. G. Burke; F. Scenini; U. Ehrnstén

doi:10.1016/j.corsci.2021.109555

Effects of surface treatments on environmentally-assisted cracking susceptibility of Alloy 182 in BWR environment

Z. Que
, L. Volpe
, A. Toivonen
, M. G. Burke
, F. Scenini
, U. Ehrnstén

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The effects of four machining surface preparations on the environmentally-assisted cracking (EAC) initiation and early crack growth were evaluated for Alloy 182 flat tapered specimens exposed to a simulated boiling water reactor (BWR) environment under constant extension rate tensile test conditions. Results showed that the apparent EAC critical threshold stress for initiation was highly dependent on the surface treatment. Detailed microstructural characterization revealed the nature of the machining-induced deformation associated with the four surface treatments. Surface treatments affected the surface oxidation during exposure in the simulated BWR environment. The machining-induced deformation structure affected the EAC initiation susceptibility.

Original language	English
Article number	109555
Journal	Corrosion Science
Volume	188
DOIs	https://doi.org/10.1016/j.corsci.2021.109555
State	Published - Aug 1 2021
Externally published	Yes

Keywords

Alloy 182
Characterisation
Environmentally-assisted cracking
Stress corrosion cracking
Surface machining

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10.1016/j.corsci.2021.109555

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title = "Effects of surface treatments on environmentally-assisted cracking susceptibility of Alloy 182 in BWR environment",

abstract = "The effects of four machining surface preparations on the environmentally-assisted cracking (EAC) initiation and early crack growth were evaluated for Alloy 182 flat tapered specimens exposed to a simulated boiling water reactor (BWR) environment under constant extension rate tensile test conditions. Results showed that the apparent EAC critical threshold stress for initiation was highly dependent on the surface treatment. Detailed microstructural characterization revealed the nature of the machining-induced deformation associated with the four surface treatments. Surface treatments affected the surface oxidation during exposure in the simulated BWR environment. The machining-induced deformation structure affected the EAC initiation susceptibility.",

keywords = "Alloy 182, Characterisation, Environmentally-assisted cracking, Stress corrosion cracking, Surface machining",

author = "Z. Que and L. Volpe and A. Toivonen and Burke, \{M. G.\} and F. Scenini and U. Ehrnst{\'e}n",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s)",

year = "2021",

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doi = "10.1016/j.corsci.2021.109555",

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journal = "Corrosion Science",

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TY - JOUR

T1 - Effects of surface treatments on environmentally-assisted cracking susceptibility of Alloy 182 in BWR environment

AU - Que, Z.

AU - Volpe, L.

AU - Toivonen, A.

AU - Burke, M. G.

AU - Scenini, F.

AU - Ehrnstén, U.

PY - 2021/8/1

Y1 - 2021/8/1

N2 - The effects of four machining surface preparations on the environmentally-assisted cracking (EAC) initiation and early crack growth were evaluated for Alloy 182 flat tapered specimens exposed to a simulated boiling water reactor (BWR) environment under constant extension rate tensile test conditions. Results showed that the apparent EAC critical threshold stress for initiation was highly dependent on the surface treatment. Detailed microstructural characterization revealed the nature of the machining-induced deformation associated with the four surface treatments. Surface treatments affected the surface oxidation during exposure in the simulated BWR environment. The machining-induced deformation structure affected the EAC initiation susceptibility.

AB - The effects of four machining surface preparations on the environmentally-assisted cracking (EAC) initiation and early crack growth were evaluated for Alloy 182 flat tapered specimens exposed to a simulated boiling water reactor (BWR) environment under constant extension rate tensile test conditions. Results showed that the apparent EAC critical threshold stress for initiation was highly dependent on the surface treatment. Detailed microstructural characterization revealed the nature of the machining-induced deformation associated with the four surface treatments. Surface treatments affected the surface oxidation during exposure in the simulated BWR environment. The machining-induced deformation structure affected the EAC initiation susceptibility.

KW - Alloy 182

KW - Characterisation

KW - Environmentally-assisted cracking

KW - Stress corrosion cracking

KW - Surface machining

UR - https://www.scopus.com/pages/publications/85106636098

U2 - 10.1016/j.corsci.2021.109555

DO - 10.1016/j.corsci.2021.109555

M3 - Article

AN - SCOPUS:85106636098

SN - 0010-938X

VL - 188

JO - Corrosion Science

JF - Corrosion Science

M1 - 109555

ER -

Effects of surface treatments on environmentally-assisted cracking susceptibility of Alloy 182 in BWR environment

Abstract

Keywords

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