Characteristics and Liquid Metal Embrittlement of the steel T91 in contact with Lead–Bismuth Eutectic
Source abstract
Abstract
Abstract This paper summarizes results of the work carried out on the evaluation of the susceptibility to LME (Liquid Metal Embrittlement) of the ferritic/martensitic steel T91 in contact with LBE (Lead–Bismuth Eutectic). The influence of LBE on the fracture toughness of the steel was studied using 0.5T CT specimen at 355 °C, pre-cracked by cyclic loading in the liquid metal. Tests were carried out in well-defined conditions and according to ASTM standard. It was observed that the LBE decreased the apparent fracture toughness, J IC , by more than 30%, compared to the value in air. The results are discussed based on examinations of the fracture surface evidencing LME occurrence. The stretch zone accompanying the pre-crack tip blunting was not observed in the specimens exhibiting LME. Therefore, a new fracture toughness, J map , determined as J integral at the maximum applied load, is proposed to be the appropriate value for fracture resistance evaluation in LBE. The J map can be applied for the assessment of a pre-existing LME crack stability.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Fatigue and fracture mechanics · High Temperature Alloys and Creep
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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