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Liquid metal embrittlement of molybdenum by the eutectic gallium-indium-tin alloy

Article dans une revue avec comité de lecture
Author
BATAILLOU, L.
573753 Airthium SAS
KLOCHKO, A.
573753 Airthium SAS
AUGER, Thierry
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
BAIZ, Sarah
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/22717
DOI
10.1016/j.mtla.2022.101523
Date
2022-09
Journal
Materiala

Abstract

The liquid metal embrittlement (LME) sensitivity of pure molybdenum in liquid eutectic gallium-indium-tin al- loy has been studied as a function of temperature by axisymmetric notched tensile testing. Molybdenum is an intrinsically brittle material that recovers a ductile fracture behavior above a transition temperature found in this study at 197 °C. The sensitivity of this refractory material to LME is demonstrated in the temperature range where it normally recovers ductile fracture (200–350 °C). The LME fracture mode is then a mixture of cleavage and intergranular cracking with no striking fractographic differences with intrinsic brittleness. This is the first case of LME at low temperature for a refractory material.

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