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首页> 外文期刊>Corrosion science >Prediction of corrosion fatigue crack growth rate in alloys. Part Ⅰ: General corrosion fatigue model for aero-space aluminum alloys
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Prediction of corrosion fatigue crack growth rate in alloys. Part Ⅰ: General corrosion fatigue model for aero-space aluminum alloys

机译:合金腐蚀疲劳裂纹扩展速率的预测。第一部分:航空航天铝合金的一般腐蚀疲劳模型

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摘要

In this work, a General Corrosion Fatigue Model (GCFM) was developed for predicting corrosion fatigue crack growth rate (CFCGR) in metals under cyclical loading. The GCFM is based on an equation for the potential drop from the external surface to the crack tip of metals as derived from the principle of differential aeration. Development of the GCFM involves consideration of cyclic loading on the CFCGR and of advection between the in-crack and external environment. We demonstrate the influence of corrosion environment and cyclic loading on the crack growth rate in Al-Li alloys in a 1:1 electrolyte (0.6 M NaCl).
机译:在这项工作中,开发了一种通用腐蚀疲劳模型(GCFM),用于预测金属在周期性载荷下的腐蚀疲劳裂纹扩展速率(CFCGR)。 GCFM基于方程式,该方程式是根据微分曝气原理从金属外表面到裂纹尖端的电位降。 GCFM的开发包括考虑CFCGR的周期性负荷以及裂缝与外部环境之间的平流。我们证明了腐蚀环境和循环载荷对1:1电解液(0.6 M NaCl)中的Al-Li合金的裂纹扩展速率的影响。

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