Blar i NTNU Open på forfatter "Rørvik, Gisle"
-
Effect of preheating and preplaced filler wire on microstructure and toughness in laser-arc hybrid welding of thick steel
Bunaziv, Ivan; Langelandsvik, Geir; Ren, Xiaobo; Westermann, Ida; Rørvik, Gisle; Dørum, Cato; Danielsen, Morten Høgseth; Eriksson, Magnus Carl Fredrik (Peer reviewed; Journal article, 2022)Acicular ferrite (AF) is the most important microstructural constituent to achieve high toughness at low temperatures in weld metal of steels. This is due to the relatively small grain size and large misorientation angles. ... -
Hardhetsreduksjon i varmepåvirket sone ved sveisereparasjon på utstyr i drift
Stegavik, Ståle Singstad; Kristensen, Jørgen; Stolpnes, Thomas (Bachelor thesis, 2020)Denne rapporten tar for seg identifisering og testing av en mulig metode å gjennomføre sveisereparasjoner av korrosjonsskader på utstyr i drift på olje- og gassanlegg. Eksempler på slikt utstyr er rør og tanker. Bakgrunnen ... -
Influence of sigma-phase precipitation on the impact behaviour of duplex stainless steel pipe fittings
Børvik, Tore; Marken, Lene Anita; Langseth, Magnus; Rørvik, Gisle; Hopperstad, Odd Sture (Journal article; Peer reviewed, 2016)In this study, the effect of sigma-phase precipitation in duplex stainless steel (grade 2205) pipe fittings collected from top-side process systems offshore was investigated under realistic loading conditions. This was ... -
Qualification of the hybrid metal extrusion & bonding (HYB) process for welding of aluminium offshore structures
Sandnes, Lise; Rørvik, Gisle; Kulbotten, Inge Morten; Grong, Øystein; Berto, Filippo (Journal article, 2020)In the present investigation the aptness of the HYB process for butt welding of 4mm AA6082-T6 profiles is evaluated and benchmarked against one gas metal arc (GMA) weld and one friction stir (FS) weld, representing best ...