20.500.12556/DiRROS-18617 The effect of heat treatment on the interface of 155 PH martensitic stainless steel and SAF 2507 duplex steel in functionally graded AM components Multi-material components, also known as functionally graded materials (FGMs), are innovative materials that possess unique properties due to their composition and have many potential applications in engineering and science. The effect of the heat treatment (HT) of functionally graded materials 15–5 precipitation-hardened (PH) martensitic steel and SAF 2507 duplex stainless steel (and the opposite order of deposition, i.e. SAF 2507 first followed by 15–5 PH stainless steel) on the interface microstructures was systematically investigated in the presented research. The choice of HT followed the trend of optimum post-processing for the individual alloys. A significant modification in the interface microstructure, characterized in the microstructural transition zone (MTZ) formed above the fusion line. Mechanical properties by miniaturized testing method including hardness measurement characterized both types of interfaces. The sequence of the materials’ application did not have a significant effect on their final mechanical tensile properties in the heat-treated states. Nevertheless, the microstructural change at the MTZ led to drop in the hardness at the interface. The research presents heat-treated FGMs in a horizontal configuration to form a high-quality metallurgical joint between heterogeneous materials manufactured by powder-based directed energy deposition method. heat treatment additive manufacturing martensitic stainless steel duplex steel microstructure mechanical properties toplotna obdelava dodajalne tehnologije martenzitno nerjavno jeklo dupleks jeklo mikrostruktura mehanske lastnosti true false true Springer Science+Business Media Nemčija Angleški jezik Slovenski jezik ©The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023 Neznano 2024-04-04 14:35:55 2024-04-04 14:35:55 2024-04-16 10:24:46 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 11. 8. 2023; str. 11351–11373 iss. 27 Vol. 58 Jul. 2023 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-07-01 669.1 1573-4803 10.1007/s10853-023-08718-7 161197315 https://link.springer.com/article/10.1007/s10853-023-08718-7 0 7b174615-f30f-11ee-9dd4-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25418 Inštitut za kovinske materiale in tehnologije 0 1 0