期刊
CORROSION SCIENCE
卷 53, 期 11, 页码 3466-3485出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.05.050
关键词
Low alloy steel; Pitting corrosion; Stress Corrosion
资金
- EPSRC [EP/H025286/1]
- Royal Society [15523]
- EPSRC [EP/H025286/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H025286/1] Funding Source: researchfish
SCC in turbine disc steels exposed to simulated steam-condensate tends to nucleate preferentially from corrosion pit precursors. The evolution of these cracks is not straightforward and not well understood. In this work, unique three-dimensional X-ray microtomographic images have confirmed that cracks develop predominantly at the shoulder of the pit, near the pit/surface interface, for specimens stressed to 50-90% sigma(0.2). In support of this observation, FEA of model pits indicate that strain is a maximum on the pit wall just below the pit mouth. Implications of these observations for the pit-to-crack transition and predictive-modelling of crack nucleation and growth are discussed. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据