Topuz, Polat2024-06-132024-06-1320192147-457510.21541/apjes.422153https://doi.org/10.21541/apjes.422153https://search.trdizin.gov.tr/tr/yayin/detay/469244https://hdl.handle.net/11501/748This research aims at effect of Post Welding Heat Treatment (PWHT) on mechanical properties of 2.25Cr1Mo (P22) high temperature and pressure resistant nuclear power plant steel welded with GTAW (gas tungsten arc welding) and SMAW (shielded metal arc welding). Pre-heating was applied to the materials to be welded at 200°C before welding processes. Welding processes of materials were performed at room temperature. After welding processes, post weld heat treatment (PWHT) was applied at 750?C for 2 hours. Before and after the PWHT, welded materials were prepared in accordance with EN standards for tensile, bending, impact, hardness tests and macrostructure examinations for the investigation of mechanical properties.eninfo:eu-repo/semantics/openAccessOther44134364692444692447