Stress corrosion cracking initiation and short crack growth behaviour in Alloy 182 weld metal under simulated boiling water reactor hydrogen water chemistry conditions

被引：22
作者：
Bai, Juxing [1 ]
Ritter, Stefan [1 ]
Seifert, Hans-Peter [1 ]
Virtanen, Sannakaisa [2 ]
机构：
[1] Paul Scherrer Inst, Nucl Energy & Safety Res Div, Lab Nucl Mat, CH-5232 Villigen, Switzerland
[2] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen, Germany
来源：
CORROSION SCIENCE | 2018年 / 131卷
关键词：
Stress corrosion cracking; Ni-base alloy; Boiling water reactor; Hydrogen; Initiation; HIGH-TEMPERATURE WATER; ENVIRONMENTALLY-ASSISTED CRACKING; GRAIN-BOUNDARY STRUCTURE; STRAIN STRESS; STEELS; DEFORMATION; DENSITY; JOINT;
D O I：
10.1016/j.corsci.2017.11.021
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of dissolved hydrogen on the stress corrosion cracking initiation and short crack growth behaviour of Alloy 182 weld metal was evaluated in 274 degrees C hydrogenated high-purity water using accelerated crack initiation and growth tests with sharply notched fracture mechanics specimens and in-situ crack initiation and growth monitoring. A maximum in initiation susceptibility and crack growth rates was observed at the Ni/NiO phase transition line. Grain boundary misorientations and mismatch in Schmid factor were measured by electron backscattered diffraction along intergranular stress corrosion cracks and at crack initiation sites. Low-angle boundaries seem to be particularly resistant to cracking.
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页码：208 / 222
页数：15
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