20.500.12556/DKUM-98504 Prestudy on the susceptibility of P460QL steel to hydrogen-assisted cracking The susceptibility of P460QL micro-alloyed steel to hydrogen-assisted cracking (HAC) was studied under constant gas charging conditions. Specimens for microstructure analysis and 13 mm-thick compact tension (CT) specimens for fracture mechanics tests were wire-cut from a hot-rolled and tempered steel plate. The microstructure was analyzed using light optical microscopy (LOM) and scanning electron microscopy (SEM) with electron backscatter diffraction (EBSD). The CT specimens were pre-cracked by cyclic tensile loading, and each specimen was loaded according to the constant displacement method by using a wedge. The actual stress intensity factor at the crack tip was calculated based on experiments and finite element analysis (FEA). The wedge-loaded CT specimens were stored for 1000 hours inside an autoclave filled with pure hydrogen gas at the pressure of 200 bar at room temperature. As HAC did not occur at the stress intensity factor of 67 MPam0.5, the P460QL micro-alloyed steel with the thickness of < ½ inch (< 13 mm) can be considered as suitable for applications under the conditions investigated. Hydrogen-assisted cracking (HAC) P460QL steel wedge-loaded specimen finite element analysis (FEA) kreking s pomočjo vodika jeklo P460QL vzorec obremenjen s klinom analiza končnih elementov true false true Elsevier Angleški jezik Slovenski jezik https://www.sciencedirect.com/science/article/pii/S245232162600301X?via%3Dihub Članek v reviji 2026-06-17 11:02:23 2026-06-17 11:02:23 2026-06-18 03:25:30 0000-00-00 00:00:00 2026 0 0 Str. 169-173 Vol. 82 May 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-05-01 539.4:620.1 281197059 281484291 10.1016/j.prostr.2026.04.026 2452-3216 https://www.sciencedirect.com/science/article/pii/S245232162600301X 1 41aec08b-6a2b-11f1-87c9-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=207230 1-s2.0-S245232162600301X-main.pdf 1-s2.0-S245232162600301X-main.pdf 1 3524C8A13AB3B3F6F5DF64053E0A2AA9 e3a796ab35ca3d053f01f57e8dbcfa43bdf7336b0da314219add028b710f7307 bcbe955a-6a2b-11f1-87c9-00155d580e34 https://dk.um.si/Dokument.php?lang=slv&id=207232 Fakulteta za strojništvo 0 0 0