Characterization of Eurofer-97 TIG-welded joints by FIMEC indentation tests

R. Montanari, G. Filacchioni, B. Riccardi, M.E. Tata, G. Costanza

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Abstract

Welded joints of 25-mm thick plates of Eurofer-97, produced by a multi-pass GTAW+filler material method, have been investigated before and after different heat treatments to identify the temperature-time combination that gives mechanical properties as close as possible to those of the base material. After NDE (non-destructive examinations), samples were annealed in the temperature range 730-750 °C for 1 and 2 h, microhardness was measured across the joints and FIMEC (flat-top cylinder indenter for mechanical characterization) tests were carried out in the molten zone (MZ), heat affected zone (HAZ) and in the matrix. The FIMEC method allowed determination on a local scale of the yield stress as obtained in standard tensile tests. Mechanical tests were supplemented by optical microscopy observations. The best results were obtained by the treatment at 750 °C for 2 h: original characteristics are substantially recovered in the HAZ but not completely in the MZ. © 2004 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1529 - 1533
Number of pages5
JournalJournal of Nuclear Materials
Volume329-333
Issue number1-3 PART B
DOIs
Publication statusPublished - 1 Aug 2004
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Montanari, R., Filacchioni, G., Riccardi, B., Tata, M. E., & Costanza, G. (2004). Characterization of Eurofer-97 TIG-welded joints by FIMEC indentation tests. Journal of Nuclear Materials, 329-333(1-3 PART B), 1529 - 1533. https://doi.org/10.1016/j.jnucmat.2004.04.173