Compatibility of martensitic/austenitic steel welds with liquid lead bismuth eutectic environment

J. Van den Bosch, A. Almazouzi

    Research outputpeer-review


    The high-chromium ferritic/martensitic steel T91 and the austenitic stainless steel 316L are to be used in contact with liquid lead–bismuth eutectic (LBE), under high irradiation doses. Both tungsten inert gas (TIG) and electron beam (EB) T91/316L welds have been examined by means of metallography, scanning electron microscopy (SEM-EDX), Vickers hardness measurements and tensile testing both in inert gas and in LBE. Although the T91/316L TIG weld has very good mechanical properties when tested in air, its properties decline sharply when tested in LBE. This degradation in mechanical properties is attributed to the liquid metal embrittlement of the 309 buttering used in TIG welding of T91/316L welds. In contrast to mixed T91/316L TIG welding, the mixed T91/316L EB weld was performed without buttering. The mechanical behaviour of the T91/316L EB weld was very good in air after post weld heat treatment but deteriorated when tested in LBE.
    Original languageEnglish
    Pages (from-to)504-509
    Number of pages6
    JournalJournal of Nuclear Materials
    Issue number3
    StatePublished - 15 Apr 2009


    This work was performed in the frame of the EUROTRANS-DEMETRA project (contract number FI6W-CT-2004-516520).

    FundersFunder number
    Euratom 6th Framework Program - Management of Radioactive WasteFI6W-CT-2004-516520

      ASJC Scopus subject areas

      • Nuclear and High Energy Physics
      • General Materials Science
      • Nuclear Energy and Engineering

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