2026-06-07T06:17:52Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/77132024-04-12T11:34:32Zcom_10259_4201com_10259_5086com_10259_2604col_10259_4505

Influence of hydrogen on the hydraulic fracture behavior of a 42CrMo4 steel welds: Effect of the prior austenite grain size Peral, Luis Borja Díaz Portugal, Andrés Arniella, V. Belzunce, J. Alegre Calderón, Jesús Manuel Cuesta Segura, Isidoro Iván High internal pressure PAGS Hydrogen cathodic precharge Martensitic lath decohesion Hydrogen embrittlement The influence of hydrogen on the mechanical behavior of a quenched and tempered 42CrMo4 steel has been evaluated by means of high internal pressure fracture tests carried out on hydrogen precharged notched cylindrical specimens. The notched cylindrical specimens were precharged in a 1 M H2SO4 + 0.25 g/l As2O3 solution for 3 h with 1.2 mA/cm2. Hydraulic fracture tests were performed at different loading rates. Hydrogen embrittlement resistance increased with grain size refinement although the fine grained specimen had a higher hydrogen content than the coarse grained one. Fractographic analysis showed hydrogen enhanced decohesion fracture was less pronounced with decreasing grain size. Hydrogen embrittlement susceptibility is discussed in terms of the prior austenite grain size (PAGS) and the operative fracture mechanisms. 2023-06-20T13:09:16Z 2023-06-20T13:09:16Z 2023-09 info:eu-repo/semantics/article 0013-7944 http://hdl.handle.net/10259/7713 10.1016/j.engfracmech.2023.109414 eng Engineering Fracture Mechanics. 2023, V. 289, 109414 https://doi.org/10.1016/j.engfracmech.2023.109414 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/TED2021-130413B-I00/ES/Estudio de la susceptibilidad a la fragilización por hidrógeno de aceros dúplex producidos mediante fabricación aditiva para su uso en componentes en ambiente de hidrógeno/HyDuplex3D info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PID2021-124768OB-C21/ES/Modelado de efectos y aplicaciones del hidrógeno en aceros de fabricación aditiva/HYSTEELS/ info:eu-repo/grantAgreement/Junta de Castilla y León//MR5WP3//Planes complementarios de I+D+i, Tecnologías, materiales y procesos para producción a pequeña escala de portadores de Hidrógeno Renovable (Metano y Amoniaco) para aprovechamiento distribuido en CyL. Universidad de Burgos. Grupo GIE/ info:eu-repo/grantAgreement/Junta de Castilla y León//MR4WP2//Plan Complementario de Materiales Avanzados: subproyecto GIE/ info:eu-repo/grantAgreement/Universidad de Oviedo//MU-21-UP2021-030/ http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier