Mechanism of the Mg$_3$Bi$_2$ phase formation in Pb-free aluminum 6xxx alloy with bismuth addition

Rečnik, Simon (avtor), Bizjak, Milan (avtor), Medved, Jože (avtor), Cvahte, Peter (avtor), Karpe, Blaž (avtor), Nagode, Aleš (avtor)

In the present work, free-cutting aluminum alloy AA6026 with 1.1 wt.% bismuth addition was fabricated by different melt preparation methods in order to investigate whether the melt preparation route affects the solidification sequence and thus has an influence on the machinability of the alloy. All experiments were designed to simulate variable industrial conditions: addition of bismuth in an induction melting furnace, addition of bismuth in an electric resistance holding furnace, addition of bismuth together with grain refiner, effect of holding time and melt temperature before casting. Detailed thermodynamic analyses (DSC, Thermo-Calc) and microstructural characterization (SEM-EDS, XRD) have been performed to explain the solidification sequence, microstructure development and especially formation of the intermetallic Mg$_3$Bi$_2$ phase.

• Jezik: Angleški jezik
• Ključne besede: free-machining AA6xxx alloy, bismuth, Mg$_3$Bi$_2$ phase, solidifcation model
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 12 str.
• Številčenje: Vol. 11, iss. 4, art. 424
• PID: 20.500.12556/RUL-135327
• UDK: 669
• ISSN pri članku: 2073-4352
• DOI: 10.3390/cryst11040424
• COBISS.SI-ID: 66695939
• Datum objave v RUL: 08.03.2022

Gradivo je del revije

• Naslov: Crystals
• Skrajšan naslov: Crystals
• Založnik: MDPI
• ISSN: 2073-4352
• COBISS.SI-ID: 36677893

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: 14.04.2021

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P1-0195
• Naslov: Geookolje in geomateriali

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: Impol d.o.o.
• Naslov: Development of aluminum free-cutting alloys