20.500.12556/RUL-148265 Optimisation of precipitation hardening for 15-5 PH martensitic stainless steel produced by wire arc directed energy deposition This paper discusses directed energy deposition of 15-5 PH, which was successfully tailored with precipitation hardening (PH) to achieve the desired properties. Parametric analysis of solution annealing and aging at various time and temperature combinations was performed. Material characterisation was done in the as-deposited, solution annealed, and PH states. Investigations included microscopy, SEM/EDS, fractography, hardness, tensile, and impact toughness test. The as-deposited microstructure was composed of martensite laths along with delta ferrite. Optimisation of solution annealing was mandatory to achieve homogeneous austenite, which allowed PH. PH resulted in similar properties compared to conventionally produced steel. Peak aging resulted in 450 HV10 and an Rm of 1350 MPa, while the over-aged condition resulted in an impact toughness of over 77 J/cm$^2$. wire arc additive manufacturing 15-5 PH solution annealing aging precipitation hardening martensitic stainless steel material characterisation oblikovno obločno navarjanje z žico 15-5 PH raztopno žarjenje staranje izločevalno utrjevanje martenzitno nerjavno jeklo karakterizacija materiala true false true Angleški jezik Slovenski jezik Članek v reviji 2023-08-08 12:22:49 2023-08-08 12:22:58 2023-08-09 03:33:57 0000-00-00 00:00:00 2023 0 0 Str. 558–568 no. 7 Vol. 28 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.75 1362-1718 10.1080/13621718.2023.2202979 150180355 Optimisation_of_precipitation_hardening_for_15_5_PH_martensitic_stainless_steel_produced_by_wire_arc_directed_energy_deposition.pdf Optimisation_of_precipitation_hardening_for_15_5_PH_martensitic_stainless_steel_produced_by_wire_arc_directed_energy_deposition.pdf 1 DA822688694D926E29E28C2AEE90C6B8 0b574c02b3052b64034f8dbd85c71ef601f60d6d2a1b3265f0570a1d679bee32 0a374a3a-35d6-11ee-aeaf-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=172335 https://www.tandfonline.com/doi/full/10.1080/13621718.2023.2202979 1 85e12a45-35d5-11ee-aeaf-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=172334 Fakulteta za strojništvo Naravoslovnotehniška fakulteta 0 0 0