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Ivan Bunaziv

Research Scientist

Ivan Bunaziv

Research Scientist

Ivan Bunaziv
Phone: 457 95 269
Department: Materials and Nanotechnology
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1750275

Laser beam welding (LBW) and laser-arc hybrid welding (LAHW) are attractive joining methods of medium thickness (10-20 mm) plates in a single pass welding technique. Both utilize high energy process in order to achieve high penetration depth and high welding speeds offering substantial increase in p...

Authors Bunaziv Ivan Dørum Cato Ren Xiaobo Eriksson Magnus Carl Fredrik Akselsen Odd Magne
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1750269

Hyperbaric welding plays a significant role in subsea pipeline installations and repairs for transport of oil and gas from the offshore field to the market. The effect of ambient pressure, from 1 to 35 bar, on penetration depth and microstructure evolution in dry hyperbaric welding of X70 pipeline s...

Authors Bunaziv Ivan Aune Ragnhild Olden Vigdis Akselsen Odd Magne
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1747417

In the present work, the metallurgical changes in the welding of clad pipelines are studied. Clad pipes consist of a complex multi-material system, with (i) the clad being stainless steel or a nickel-based superalloy, (ii) the pipe being API X60 or X65 high-strength carbon steel, and (iii) the weldi...

Authors Bunaziv Ivan Olden Vigdis Akselsen Odd Magne
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1673437

Laser-arc hybrid welding (LAHW) is more often used in shipbuilding and oil and gas industries in recent years. Its popularity arises due to many advantages compared to conventional arc welding processes. The laser beam source is used to achieve much higher penetration depths. By adding filler wire t...

Authors Bunaziv Ivan Akselsen Odd Magne Frostevarg Jan Kaplan Alexander F.H.
Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1574936

The present investigation addresses laser-arc hybrid welding of 45 mm thick steel with variation in a wide range of process parameters. High volume fraction of acicular ferrite formed in the upper part of the weld metal regardless process parameters. Significantly lower fraction of acicular ferrite ...

Authors Bunaziv Ivan Akselsen Odd Magne Frostevarg Jan Kaplan Alexander F.H.
Year 2018
Type Journal publication