Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 301, Issue 1, Pages 70-76Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0022-3115(01)00730-9
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In previous works [Scripta Mater. 43 (2000) 997, J. Nucl. Mater. 296 (2001) 256]. we showed that the martensitic steel 91 is prone to liquid metal embrittlement (LME) by liquid lead provided that some metallurgical conditions are fulfilled. In this work, we report results of LME of the steel 91 in contact with Pb-Bi and other low melting temperature metals such as Sn and Hg. Our experimental results can be interpreted within the framework of the surface energy reduction models for LME. To account for the experimental observations, we performed electronic structure calculations to assess the chemical interaction between low melting temperature metal atoms and iron surfaces. Our results allow to establish a simple criterion that can give trends on the embrittlement power of a liquid metal in contact with iron. (C) 2002 Elsevier Science B.V. All rights reserved.
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