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Theoretical Modeling of the Kinetics of External Hydrogen Embrittlement  

Han, Jeong-Seb (School of Civil and Ocean Engineering, Dong-A university)
Macdonald, Digby D. (Center for Electrochemical Science and Technology, Pennsylvania State University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.16, no.4, 2005 , pp. 324-333 More about this Journal
Abstract
The kinetics of external hydrogen embrittlememt is considered. The equation of the crack growth rate (CGR) is derived from modification of the model developed by Wilkinson and Vitek. After calculation of hydrogen pressure build-up in the void, the effect of the internal hydrogen pressure on the void growth is added. The CGR is expressed by two terms. One is the term dependent on the critical stress, which is exactly same as Wilkinson and Vitek. The other is term dependent on the pressure of the hydrogen in void.
Keywords
Hydrogen Embrittlement; Void Growth; Internal Hydrogen Pressure; Diffusion of Hydrogen;
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