TY - JOUR

T1 - Control of the diffusible hydrogen content in different steel phases through the targeted use of different welding consumables in underwater wet welding

AU - Klett, Jan

AU - Mattos, Isabel B.F.

AU - Maier, Hans J.

AU - e Silva, Régis H.G.

AU - Hassel, Thomas

N1 - Funding Information: The authors thank Kjellberg Finsterwalde Elektroden und Zusatzwerkstoffe GmbH and voestalpine B?hler Welding UTP Maintenance GmbH for supporting this study by providing welding consumables. This study was a part of the DVS research project IGF 19.211N funded by the AiF as a part of the program to support "Industrial Community Research and Development" (IGF) funded by the Federal Ministry for Economic Affairs and Energy on the basis of a decision of the German Bundestag. A part of this study was conducted during a scholarship program supported by the International Cooperation Program CAPES at the University of Santa Catarina, financed by CAPES, Brazilian Federal Agency for Support and Evaluation of Graduate Education within the Ministry of Education of Brazil.?Open access funding enabled and organized by Projekt DEAL.

PY - 2020/3/3

Y1 - 2020/3/3

N2 - Due to the rising number of offshore structures all over the world, underwater wet welding has become increasingly relevant, mainly as a repair method. Welding in direct contact with water involves numerous challenges. A topic focused by many studies is the risk of hydrogen-induced cracking in wet weldments due to hardness values of up to 500 HV 0.2 in the heat-affected zone (HAZ) and high levels of diffusible hydrogen in the weld metal. The risk of cracking increases as the equivalent carbon content rises, because the potential to form martensitic structures within the HAZ rises too. Thus, high-strength steels are especially prone to hydrogen-induced cracking and are considered unsafe for underwater wet repair weldments.

AB - Due to the rising number of offshore structures all over the world, underwater wet welding has become increasingly relevant, mainly as a repair method. Welding in direct contact with water involves numerous challenges. A topic focused by many studies is the risk of hydrogen-induced cracking in wet weldments due to hardness values of up to 500 HV 0.2 in the heat-affected zone (HAZ) and high levels of diffusible hydrogen in the weld metal. The risk of cracking increases as the equivalent carbon content rises, because the potential to form martensitic structures within the HAZ rises too. Thus, high-strength steels are especially prone to hydrogen-induced cracking and are considered unsafe for underwater wet repair weldments.

KW - arc voltage control

KW - austenitic hydrogen traps

KW - diffusible hydrogen

KW - galvanic corrosion

KW - hydrogen-induced cracking (HIC)

KW - SMAW

KW - wet welding

UR - http://www.scopus.com/inward/record.url?scp=85091383420&partnerID=8YFLogxK

U2 - 10.1002/maco.202011963

DO - 10.1002/maco.202011963

M3 - Article

AN - SCOPUS:85091383420

VL - 72

SP - 504

EP - 516

JO - Materials and corrosion

JF - Materials and corrosion

SN - 0947-5117

IS - 3

ER -