Evaluation of liquid metal embrittlement of F82H and 4340 steels in liquid lithium

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Abstract

To evaluate the liquid metal embrittlement (LME) susceptibility of F82H, a reduced activation ferritic-martensitic (RAFM) steel, a testing procedure using hollow cylindrical tensile specimens was used. Tensile tests are compared between specimens filled with argon and lithium at 200 °C. To validate the procedure, initial testing was performed on type 4340 steel, which is well-known to exhibit LME. Compared to 4340 steel, F82H only showed minor effects of Li exposure, including pre-testing exposures with Li at 400 °C for 1 h and 500 °C for 500 h. Furthermore, changing the strain rate or tensile test temperature also did not show significant embrittlement.

Original languageEnglish
Article number114601
JournalFusion Engineering and Design
Volume206
DOIs
StatePublished - Sep 2024

Keywords

  • Embrittlement
  • Liquid metal
  • Lithium
  • Steel

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