The influence of segregation bands and hot rolling on the precipitation of secondary phases during aging at 750 °C for nickel alloy 625

Malej, Simon (avtor), Medved, Jože (avtor), Šetina Batič, Barbara (avtor), Tehovnik, Franc (avtor), Vode, Franci (avtor), Burja, Jaka (avtor), Godec, Matjaž (avtor)

For Inconel 625, where the γ” and δ phases precipitate, the influence of prior hot rolling on the process is not well covered. The influence of segregation bands and prior hot rolling on the precipitation of secondary phases during aging at 750 °C for different times was investigated. Prior hot-rolling was conducted on a hot rolling mill at 1050 °C and 1150 °C with three different deformation levels. The hot rolled samples were aged at 750 °C for 1, 5, 25 and 125 h. The γ” precipitated in both the deformed and recrystallized grains in the segregation bands containing a high concentration of niobium and molybdenum and a lower concentration of nickel, chromium and iron. The opposite was observed between the segregation bands where no γ” precipitate was found. There was a smooth transition in the density and the size of the γ” particles in the deformed grains at the border of the segregation bands, while a more complex transition occurred in the recrystallized grains. This occurred in the area where the average niobium concentration decreased from 4.5 to 2.7 wt. %, which influenced the mechanical properties.

• Jezik: Angleški jezik
• Ključne besede: nickel-based superalloy, hot rolling, recrystallization, segregation, precipitation
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2019
• Št. strani: 20 str.
• Številčenje: Vol. 9, iss. 3, art. 314
• PID: 20.500.12556/RUL-131934
• UDK: 669.245
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met9030314
• COBISS.SI-ID: 1467818
• Datum objave v RUL: 06.10.2021

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 11.03.2019

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nikljeve superzlitine, vroče valjanje, rekristalizacija, segregacija, izločanje

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0132
• Naslov: Fizika in kemija površin kovinskih materialov

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Program financ.: Young researcher