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On the prediction of macrosegregation in vacuum arc remelted ingots
ID
Mramor, Katarina
(
Author
),
ID
Quatravaux, T.
(
Author
),
ID
Combeau, Hervé
(
Author
),
ID
Jardy, A.
(
Author
),
ID
Založnik, Miha
(
Author
),
ID
Crassous, I.
(
Author
),
ID
Gaillac, A.
(
Author
)
URL - Source URL, Visit
https://link.springer.com/article/10.1007/s11663-022-02578-3
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Abstract
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.
Language:
English
Keywords:
macrosegregation
,
vacuum arc remelting
,
microsegregation
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Year:
2022
Number of pages:
19 str.
Numbering:
Vol. 53
PID:
20.500.12556/RUL-141038
UDC:
621.74
ISSN on article:
1073-5615
DOI:
10.1007/s11663-022-02578-3
COBISS.SI-ID:
113921027
Publication date in RUL:
22.09.2022
Views:
361
Downloads:
28
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Record is a part of a journal
Title:
Metallurgical and materials transactions. Process metallurgy and materials processing science
Shortened title:
Metall. mater. trans., B, Proc. metall. mater. proc. sci.
Publisher:
Minerals, Metals & Materials Society, ASM International
ISSN:
1073-5615
COBISS.SI-ID:
3461654
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
makroizcejanje
,
vakumsko pretaljanje
,
model mikroizcejanja
Projects
Funder:
Other - Other funder or multiple funders
Funding programme:
French National Research Agency
Project number:
ANR-08-MAPR-0006-04
Name:
Optimizing Processes based on Electrode Remelting
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