Results of EC FP7 Structural Performance of MULTI-METAL Component Project: Dissimilar Metal Welds Fracture Resistance Investigation

Heikki Keinänen, Elisabeth Keim, Päivi Karjalainen-Roikonen, Sébastien Blasset, Philippe Gilles, Tomas Nicak

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

The purpose of this paper is to disseminate the results of an EURATOM project MULTI-METAL focusing on the structural integrity assessment of dissimilar metal welds. The project started in February 2012 and ended in February 2015. The project is coordinated by VTT with 10 partner organizations from Europe : Technical Research Centre of Finland, Finland (VTT) – Coordinator, AREVA NP, France and Germany (ANP), Commissariat à l’Énergie Atomique et aux energies alternatives, France (CEA), Joint Research Centre of the European Commission, Belgium (JRC), EdF-Energy, United Kingdom (BE), Bay Zoltán Foundation for Applied Research, Hungary (BZF), Electricité de France, France (EDF), TECNATOM, Spain (TEC), Jožef Stefan Institute, Slovenia (JSI), Studsvik Nuclear AB, Sweden (STU). The underlying aim of the project is to provide recommendations for a good practice approach for the integrity assessment (especially testing) of tough dissimilar metal welds as part of overall ductile integrity analyses; this has been presented in the project overview [1]. Experience on typical DMWs concerning manufacturing, residual stresses, flaw assessment and testing have been reviewed. The specimens were taken from mock-ups of welded plates. Three DMWs design variants have been covered: narrow gap DMW with Ni-52, DMW with austenitic steel buttering and a DMW with Nienriched austenitic steel buttering. Mechanical characterization and fracture mechanics testing (CT, SEN(B) and SEN(T) specimens) have been performed. Interpretation of the test has required numerical analysis since the standard ASTM E1820 [2] (CT, SEN(B)) and guidelines dealing with SEN(T) [3][4] are not directly intended to cover DMW.
Original languageEnglish
Title of host publicationASME 2015 Pressure Vessels and Piping Conference
PublisherAmerican Society of Mechanical Engineers ASME
Number of pages12
Volume6A
ISBN (Print)978-0-7918-5699-4
DOIs
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
EventASME 2015 Pressure Vessels and Piping Conference, PVP 2015 - Boston, United States
Duration: 19 Jul 201523 Jul 2015

Conference

ConferenceASME 2015 Pressure Vessels and Piping Conference, PVP 2015
Abbreviated titlePVP 2015
CountryUnited States
CityBoston
Period19/07/1523/07/15

Fingerprint

Dissimilar metals
Fracture toughness
Welds
Austenitic steel
Testing
Mockups
Structural integrity
Fracture mechanics
Numerical analysis
Residual stresses
Defects

Keywords

  • alloy 52 DMW
  • ASTM E1820
  • dissimilar metal welds
  • EBSD
  • fracture toughness
  • mismatch
  • nuclear materials
  • VVER DMW

Cite this

Keinänen, H., Keim, E., Karjalainen-Roikonen, P., Blasset, S., Gilles, P., & Nicak, T. (2015). Results of EC FP7 Structural Performance of MULTI-METAL Component Project: Dissimilar Metal Welds Fracture Resistance Investigation. In ASME 2015 Pressure Vessels and Piping Conference (Vol. 6A). [PVP2015-45145] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2015-45145
Keinänen, Heikki ; Keim, Elisabeth ; Karjalainen-Roikonen, Päivi ; Blasset, Sébastien ; Gilles, Philippe ; Nicak, Tomas. / Results of EC FP7 Structural Performance of MULTI-METAL Component Project : Dissimilar Metal Welds Fracture Resistance Investigation. ASME 2015 Pressure Vessels and Piping Conference. Vol. 6A American Society of Mechanical Engineers ASME, 2015.
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Keinänen, H, Keim, E, Karjalainen-Roikonen, P, Blasset, S, Gilles, P & Nicak, T 2015, Results of EC FP7 Structural Performance of MULTI-METAL Component Project: Dissimilar Metal Welds Fracture Resistance Investigation. in ASME 2015 Pressure Vessels and Piping Conference. vol. 6A, PVP2015-45145, American Society of Mechanical Engineers ASME, ASME 2015 Pressure Vessels and Piping Conference, PVP 2015, Boston, United States, 19/07/15. https://doi.org/10.1115/PVP2015-45145

Results of EC FP7 Structural Performance of MULTI-METAL Component Project : Dissimilar Metal Welds Fracture Resistance Investigation. / Keinänen, Heikki; Keim, Elisabeth; Karjalainen-Roikonen, Päivi; Blasset, Sébastien; Gilles, Philippe; Nicak, Tomas.

ASME 2015 Pressure Vessels and Piping Conference. Vol. 6A American Society of Mechanical Engineers ASME, 2015. PVP2015-45145.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Keinänen, Heikki

AU - Keim, Elisabeth

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AU - Blasset, Sébastien

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N2 - The purpose of this paper is to disseminate the results of an EURATOM project MULTI-METAL focusing on the structural integrity assessment of dissimilar metal welds. The project started in February 2012 and ended in February 2015. The project is coordinated by VTT with 10 partner organizations from Europe : Technical Research Centre of Finland, Finland (VTT) – Coordinator, AREVA NP, France and Germany (ANP), Commissariat à l’Énergie Atomique et aux energies alternatives, France (CEA), Joint Research Centre of the European Commission, Belgium (JRC), EdF-Energy, United Kingdom (BE), Bay Zoltán Foundation for Applied Research, Hungary (BZF), Electricité de France, France (EDF), TECNATOM, Spain (TEC), Jožef Stefan Institute, Slovenia (JSI), Studsvik Nuclear AB, Sweden (STU). The underlying aim of the project is to provide recommendations for a good practice approach for the integrity assessment (especially testing) of tough dissimilar metal welds as part of overall ductile integrity analyses; this has been presented in the project overview [1]. Experience on typical DMWs concerning manufacturing, residual stresses, flaw assessment and testing have been reviewed. The specimens were taken from mock-ups of welded plates. Three DMWs design variants have been covered: narrow gap DMW with Ni-52, DMW with austenitic steel buttering and a DMW with Nienriched austenitic steel buttering. Mechanical characterization and fracture mechanics testing (CT, SEN(B) and SEN(T) specimens) have been performed. Interpretation of the test has required numerical analysis since the standard ASTM E1820 [2] (CT, SEN(B)) and guidelines dealing with SEN(T) [3][4] are not directly intended to cover DMW.

AB - The purpose of this paper is to disseminate the results of an EURATOM project MULTI-METAL focusing on the structural integrity assessment of dissimilar metal welds. The project started in February 2012 and ended in February 2015. The project is coordinated by VTT with 10 partner organizations from Europe : Technical Research Centre of Finland, Finland (VTT) – Coordinator, AREVA NP, France and Germany (ANP), Commissariat à l’Énergie Atomique et aux energies alternatives, France (CEA), Joint Research Centre of the European Commission, Belgium (JRC), EdF-Energy, United Kingdom (BE), Bay Zoltán Foundation for Applied Research, Hungary (BZF), Electricité de France, France (EDF), TECNATOM, Spain (TEC), Jožef Stefan Institute, Slovenia (JSI), Studsvik Nuclear AB, Sweden (STU). The underlying aim of the project is to provide recommendations for a good practice approach for the integrity assessment (especially testing) of tough dissimilar metal welds as part of overall ductile integrity analyses; this has been presented in the project overview [1]. Experience on typical DMWs concerning manufacturing, residual stresses, flaw assessment and testing have been reviewed. The specimens were taken from mock-ups of welded plates. Three DMWs design variants have been covered: narrow gap DMW with Ni-52, DMW with austenitic steel buttering and a DMW with Nienriched austenitic steel buttering. Mechanical characterization and fracture mechanics testing (CT, SEN(B) and SEN(T) specimens) have been performed. Interpretation of the test has required numerical analysis since the standard ASTM E1820 [2] (CT, SEN(B)) and guidelines dealing with SEN(T) [3][4] are not directly intended to cover DMW.

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KW - mismatch

KW - nuclear materials

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Keinänen H, Keim E, Karjalainen-Roikonen P, Blasset S, Gilles P, Nicak T. Results of EC FP7 Structural Performance of MULTI-METAL Component Project: Dissimilar Metal Welds Fracture Resistance Investigation. In ASME 2015 Pressure Vessels and Piping Conference. Vol. 6A. American Society of Mechanical Engineers ASME. 2015. PVP2015-45145 https://doi.org/10.1115/PVP2015-45145