Wetting and mechanical properties, a case study: Liquid metal embrittlement of a martensitic steel by liquid lead and other liquid metals
作者： A. Legris , J.-B. Vogt , A. Verleene , I. Serre
DOI: 10.1007/S10853-005-1975-Y
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摘要: We present experimental results of tensile and fatigue properties the T91 (a 9% Cr martensitic steel) in a stagnant molten metallic bath (Pb, Pb-Bi or Sn for instance). Under particular conditions, tests revealed an instantaneous embrittlement material, more pronounced at low temperature, that disappears as temperature is raised above 450°C. This behavior explained by reduction surface energy bare metal induced adsorption liquid metal. When steel submitted to cycle presence eutectic 300°C, its lifetime significantly reduced compared performed air. In this case, given complexity mechanisms leading fracture, it difficult ascribe observed sole surface-energy effect, but adsorption-induced localization plastic deformation very crack tip appealing hypothesis.
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