On the prediction of macrosegregation in vacuum arc remelted ingots

Mramor, Katarina (avtor), Quatravaux, T. (avtor), Combeau, Hervé (avtor), Jardy, A. (avtor), Založnik, Miha (avtor), Crassous, I. (avtor), Gaillac, A. (avtor)

The chemical homogeneity and metallurgical structure of vacuum arc remelted (VAR) zirconium ingots are directly responsible for product quality. It is therefore important to understand the relationship between these properties and the operating conditions. An in-depth analysis of the modelling of solidification phenomena during the VAR was carried out. Such model, solves a coupled set of transient equations for heat, momentum, solute transport and turbulence in an axisymmetric geometry. The remelting and cooling of a cylindrical ingot are calculated for time-dependent operating parameters. The solidification mechanisms implemented in the model can be applied to multi-component industrial alloys such as Zircaloy-4, which provides information on the macrosegregation phenomena studied in this paper. The model results were validated, based on the remelting of a specially designed chemically homogeneous Zircaloy-4 electrode. The results illustrate the importance of thermal and solute convection, the importance of the permeability of the partially solid material and the weak influence of nuclei density and solute diffusion in the solid phase on the prediction of macrosegregation in Zircaloy-4 ingots.

• Jezik: Angleški jezik
• Ključne besede: macrosegregation, vacuum arc remelting, microsegregation
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Leto izida: 2022
• Št. strani: 19 str.
• Številčenje: Vol. 53
• PID: 20.500.12556/RUL-141038
• UDK: 621.74
• ISSN pri članku: 1073-5615
• DOI: 10.1007/s11663-022-02578-3
• COBISS.SI-ID: 113921027
• Datum objave v RUL: 22.09.2022

Gradivo je del revije

• Naslov: Metallurgical and materials transactions. Process metallurgy and materials processing science
• Skrajšan naslov: Metall. mater. trans., B, Proc. metall. mater. proc. sci.
• Založnik: Minerals, Metals & Materials Society, ASM International
• ISSN: 1073-5615
• COBISS.SI-ID: 3461654

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.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: makroizcejanje, vakumsko pretaljanje, model mikroizcejanja

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: French National Research Agency
• Številka projekta: ANR-08-MAPR-0006-04
• Naslov: Optimizing Processes based on Electrode Remelting