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

被引：22
作者：
Que, Z. [1 ]
Volpe, L. [2 ]
Toivonen, A. [1 ]
Burke, M. G. [2 ]
Scenini, F. [2 ]
Ehrnsten, U. [1 ]
机构：
[1] VTT Tech Res Ctr Finland, Nucl Reactor Mat, Kivimiehentie 3,POB 1000, FI-02044 Espoo, Finland
[2] Univ Manchester, Mat Performance Ctr, Dept Mat, Oxford Rd, Manchester M13 9PL, Lancs, England
来源：
CORROSION SCIENCE | 2021年 / 188卷
基金：
欧盟地平线“2020”;
关键词：
Alloy; 182; Environmentally-assisted cracking; Stress corrosion cracking; Surface machining; Characterisation; STRESS-CORROSION CRACKING; 304L STAINLESS-STEEL; HIGH-TEMPERATURE; OXIDE-FILMS; STRAIN-RATE; BOUNDARY MICROCHEMISTRY; RESIDUAL-STRESS; WATER CHEMISTRY; GROWTH BEHAVIOR; WELD METAL;
D O I：
10.1016/j.corsci.2021.109555
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：21
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