PSI - Issue 42

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Structural Integrity Procedia 00 (2022) 000 – 000 il l li t . i i t. tr t r l I t rit r i ( )

www.elsevier.com/locate/procedia . l i r. /l t / r i

ScienceDirect

Procedia Structural Integrity 42 (2022) 276–283

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 Abstract Offshore structures and equipment, used both for oil extraction and wind power generation, are constantly exposed to extreme application conditions, such as low temperatures, corrosion, and cyclic loading. Thus, to ensure the integrity of such components, the use of materials with excellent mechanical properties combined with good weldability is required. In this sense, the main committees, institutes, and normative societies have created pre-qualifications, codes, and programs to evaluate and certify the weldability of steels applied in the offshore industry. API RP 2Z prequalification is one such standard that is designed to ensure that steels developed for these applications have excellent fracture toughness in the heat affected zone (HAZ). In this context, the effect of heat input on the HAZ toughness of welded joints of API X80MO steel plates was evaluated, using the CTOD (Crack Tip Opening Displacement) parameter. It was found that this steel, of 37 mm thickness, welded with heat inputs of 0.8 and 4.5 kJ/mm, presented weldability characteristics and fracture toughness behavior suitable for API RP 2Z standard specification. Therefore, API X80MO steel plates, produced by controlled rolling followed by accelerated cooling, is an option for application in the construction of offshore structures and components. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23 Keywords: API X80MO TMCP Steel; Heat affected zone; CTOD t t i t, t il t ti i ti , t tl t t li ti iti , l t t , i , li l i . , t t i t it t , t t i l it ll t i l ti i it l ilit i i . t i , t i itt , i tit t , ti i ti t li i ti , , t l t ti t l ilit t l li i t i t . li i ti i t t t i i t t t t l l t li ti ll t t t i t t t . t i t t, t t t i t t t l j i t t l l t l t , i t i i i l t t . t t t t i t l, t i , l it t i t . . / , t l ilit t i ti t t i it l t i i ti . , t l l t , t ll lli ll l t li , i ti li ti i t t ti t t t . t . li l i . . This is an open access article under the CC BY li tt :// ti . /li / / . / i i ilit t : I t l; t ff t ; 23 European Conference on Fracture - ECF23 CTOD Evaluation of API X80MO PSL2 TMCP Steel Welded Joints Used in Offshore Structures Based on API RP 2Z Tadeu Messias Donizete Borba a *, Heitor Cezar da Silva a , Leandro Matos Lopes Soares b , Leonardo de Oliveira Turani c , Louriel Oliveira Vilarinho d a Usiminas Research and Development Center, Av. Pero Vaz Caminha, Usiminas – Bom Retiro, Ipatinga 35160 238, Brazil b Esab Applications Development Center, Zezé Camargos 117, Cidade Industrial, Contagem 32210 080, Brazil c Usiminas Customer Service, Av do Contorno 6594, Savassi, Belo Horizonte 30110 044 – Brazil d Center for Research and Development of Welding Processes – Federal University of Uberlândia, Av. João Naves de Ávila 2121, Santa Mônica, Uberlândia 38400 902, Brazil a a b c d a i i l t t , . i , i i ti , I ti , il b li ti l t t , , i I t i l, t , il c i i t i , t , i, l i t il d t f l t f l i l i it f l i , . il , t i , l i , il

* Corresponding author. Tel.: +55-31-99308-9709. E-mail address: tadeu.borba@usiminas.com i t r. l.: - - - . - il : t . r i i . rr

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23 l i r . . i i rti l r t - - li ( tt :// r ti . r /li / - - / . /) i i ilit t - t r . li

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.034