Advanced microstructural characterization of the intergranular oxidation of Alloy 600

被引：78
|
作者：
Bertali, G. [1 ]
Scenini, F. [1 ]
Burke, M. G. [1 ]
机构：
[1] Univ Manchester, Mat Performance Ctr, Manchester, Lancs, England
来源：
CORROSION SCIENCE | 2015年 / 100卷
基金：
英国工程与自然科学研究理事会;
关键词：
Alloy; 600; Preferential intergranular oxidation; Grain boundary migration; Microstructure; AEM; STRESS-CORROSION CRACKING; NICKEL-ALUMINUM ALLOYS; INTERNAL OXIDATION; WATER; DIFFUSION; BEHAVIOR; OXIDES; STEAM; TEM;
D O I：
10.1016/j.corsci.2015.08.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Oxidation of solution-annealed Alloy 600 has been performed in a hydrogenated steam environment, which is considered to simulate PWR primary water exposure. FIB and analytical TEM characterization, coupled with detailed SEM analyses, provided unequivocal evidence of localized grain boundary migration and intergranular oxide penetrations. These localized migrations were associated with pronounced Cr and Fe depletions, highlighting the role of the grain boundaries for Cr diffusion for intergranular oxidation. These findings are discussed in relation to the early stages of intergranular oxidation, diffusion-induced grain boundary migration and subsequent SCC initiation. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：474 / 483
页数：10
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