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首页> 外文会议>Annual Conference and Exposition on Corrosion NACExpo >ENVIRONMENTALLY ASSISTED CRACKING BEHAVIOR OF NICKEL ALLOYS IN SIMULATED ACIDIC AND ALKALINE GROUND WATERS USING U-BEND SPECIMENS
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ENVIRONMENTALLY ASSISTED CRACKING BEHAVIOR OF NICKEL ALLOYS IN SIMULATED ACIDIC AND ALKALINE GROUND WATERS USING U-BEND SPECIMENS

机译：使用U形弯曲标本的模拟酸性和碱性研磨水中镍合金的环保抗裂行为

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The model for the degradation of the containers for nuclear waste includes three modes of corrosion, namely general corrosion, localized corrosion and environmentally assisted cracking (EAC). The objective of the current research was to quantify the susceptibility of five nickel alloys to EAC in several environmental conditions with varying solution composition, temperature and electrochemical potential. These alloys included: Alloy 22 (N06022), Alloy C-4 (N06455), Alloy 625 (N06625), Alloy G-3 (N06985) and Alloy 825 (N08825). The susceptibility to EAC was evaluated using constant deformation (deflection) U-bend specimens in both the non-welded (wrought) and welded conditions. Results show that after more than five years exposure in the vapor and liquid phases of alkaline (pH - 10) and acidic (pH - 3) multi-ionic environments at 60 deg C and 90 deg C, none of the tested alloys suffered environmentally assisted cracking.
机译：用于核废料容器的劣化模型包括三种腐蚀模式，即一般腐蚀，局部腐蚀和环保裂缝（EAC）。目前研究的目的是在具有不同溶液组合物，温度和电化学电位的环境条件下量化五个镍合金对EAC的敏感性。这些合金包括：合金22（N06022），合金C-4（NO 6455），合金625（NO 6625），合金G-3（NO 6985）和合金825（NO 8825）。在非焊接（锻造）和焊接条件下，使用恒定变形（偏转）U形弯曲标本评估对EAC的敏感性。结果表明，在60℃和90℃的碱（pH-10）和酸性液相和酸性（pH - 3）多离子环境中发生超过五年的曝光后，没有测试的合金遭受环境辅助的开裂。

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