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.

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(part b), 1529-1533 [10.1016/j.jnucmat.2004.04.173].

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

MONTANARI, ROBERTO;TATA, MARIA ELISA;COSTANZA, GIROLAMO
2004-01-01

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
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/21 - METALLURGIA
English
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(part b), 1529-1533 [10.1016/j.jnucmat.2004.04.173].
Montanari, R; Filacchioni, G; Riccardi, B; Tata, Me; Costanza, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/51621
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