NDLI: The risk of liquid metal embrittlement of the Z10CDNbV 9-1 martensitic steel

Content Provider	EDP Sciences
Author	J.-B. Vogt G. Nicaise A. Legris F. Foct
Abstract	The aim of this work was to determine the factors likely to lead to a liquid metal embrittlement of the Z10CDNbV9-1 martensitic steel. Monotonic tensile tests carried out from 533K to 623K in air showed a ductile behaviour and ductile fracture of the alloy even if the highest hardness had been obtained for a given tempering temperature and even if sharp defects existed on the specimen surface. In most cases, no effect of the liquid metal (lead, tin, lead-bismuth eutectic) was noticed compared with the tensile behaviour in air. A liquid metal emhrittlement was however observed in the 773K tempered steel when microcracks form at the surface of the specimen, exposing thus fresh surfaces to the liquid metal, before microvoids nucleate and grow in the specimen bulk. From the fractographic investigation clearly showing transgranular cleavage and from atomic scale simulation, it is proposed that a reduction of the surface energy caused by the adsorbed atoms of the liquid metal is responsible for the embrittlement.
Ending Page	225
Starting Page	217
Page Count	9
File Format	HTM / HTML PDF
ISSN	11554339
Alternate Webpage(s)	http://dx.doi.org/10.1051/jp4:20020335
Issue Number	8
Journal	Journal de Physique IV (Proceedings)
Volume Number	12
DOI	10.1051/jp4:20020335
Language	English
Publisher	EDP Sciences
Publisher Date	2002-09-01
Access Restriction	Subscribed
Rights Holder	EDP Sciences
Content Type	Text
Resource Type	Article

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The risk of liquid metal embrittlement of the Z10CDNbV 9-1 martensitic steel