Cristin-resultat-ID: 1220804
Sist endret: 13. februar 2015, 07:07
NVI-rapporteringsår: 2014
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2014

Evaluation of welding consumables for application down to -60°C

Bidragsytere:
  • Odd Magne Akselsen og
  • Erling Østby

Bok

Proceedings of the Twenty-fourth (2014) International Offshore and Polar Engineering Conference, Busan, Korea
ISBN:
  • 978-1-880653-91-3

Utgiver

International Society of Offshore and Polar Engineers (ISOPE)

Serie

ISOPE - International Offshore and Polar Engineering Conference. Proceedings
ISSN 1098-6189
NVI-nivå 1

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2014
Hefte: 2014
Sider: 271 - 277
ISBN:
  • 978-1-880653-91-3

Klassifisering

Fagfelt (NPI)

Fagfelt: Marin og maritim teknologi
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

Evaluation of welding consumables for application down to -60°C

Sammendrag

In evaluation of materials for arctic applications, their low temperature properties are addressed. The heat affected zone toughness has been shown to be critical with respect to satisfactory fracture toughness. Less attention has been given to the weld metal. Therefore, the present study was initiated with the objective to assess the fracture toughness of weld metals deposited with different welding wires. Both impact and fracture toughness testing were included; the latter one considered testing of full sized single edge notch bending specimens with through thickness notch in the weld metal and sub-sized specimens with surface notch in primary weld metal and in re-heated weld metal. The testing was performed at -60ºC and three parallels were run for all configurations. The results showed that both the Charpy V notch and fracture toughness varied substantially between the different welding wires employed. For the Charpy case, impact properties scattered from about 20 J for Weld 3 to 75-115 J for Weld 5. This ranking changed when it comes to full size CTOD specimens. Still Weld 3 had lowest values, while Welds 1 and 2 appeared with best toughness. The behaviour of Welds 1 and 2 was also different from the other welds regarding sub-sized samples with notches in the primary and reheated weld metals. Here, Welds 1 and 2 had similar toughness for the two weld metal regions, while Welds 3, 4 and 5 had higher CTOD values for the reheated weld metal. These results are discussed in terms of the weld metal microstructure observations.

Bidragsytere

Odd Magne Akselsen

  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS
  • Tilknyttet:
    Forfatter
    ved Institutt for maskinteknikk og produksjon ved Norges teknisk-naturvitenskapelige universitet

Erling Østby

  • Tilknyttet:
    Forfatter
    ved DNV
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Proceedings of the Twenty-fourth (2014) International Offshore and Polar Engineering Conference, Busan, Korea.

Chung, J S; Vorpahl, Fabian; Hong, Seok-Won; Hong, S. Y.; Kokkinis, Ted; Wang, Alan M.. 2014, Vitenskapelig antologi/Konferanseserie
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