Publication detail

A Numerical Study on the Influence of an Axial Magnetic Field (AMF) on Vacuum Arc Remelting (VAR) Process

KARIMI-SIBAKI, E. KHARICHA, A. ABDI, M. VAKHRUSHEV, A. WU, M. LUDWIG, A. BOHÁČEK, J.

Original Title

A Numerical Study on the Influence of an Axial Magnetic Field (AMF) on Vacuum Arc Remelting (VAR) Process

Type

journal article in Web of Science

Language

English

Original Abstract

A comprehensive numerical model is proposed to study the influence of an axial magnetic field (AMF) on the solidification behavior of a Titanium-based (Ti–6Al–4V) vacuum arc remelting (VAR) ingot. Both static and time-varying AMF are examined. The proposed 2D axisymmetric swirl model includes calculating electromagnetic and thermal fields in the entire system composed of the electrode, vacuum plasma, ingot, and mold. A combination of vector potential formulation and induction equation is proposed to model the electromagnetic field accurately. Calculations of the flow in the melt pool and solidification of the ingot are also carried out. All governing equations are presented in cylindrical coordinate. The presence of a weak AMF, such as the earth magnetic field, can dramatically influence the flow pattern in the melt pool. The “Electro-vortex flow” is predicted ignoring AMF or in the presence of a time-varying AMF. However, the flow pattern is “Ekman pumping” in the presence of a static AMF. The amount of side-arcing has no influence on the pool depth in the presence of an AMF. Modeling results are validated against experiments.

Keywords

vacuum arc remelting, axial Magnetic field, titanium-based alloy, axisymmetric swirl model, CFD,

Authors

KARIMI-SIBAKI, E.; KHARICHA, A.; ABDI, M.; VAKHRUSHEV, A.; WU, M.; LUDWIG, A.; BOHÁČEK, J.

Released

7. 7. 2021

Publisher

Springer

ISBN

1073-5615

Periodical

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE

Year of study

52

Number

3

State

United States of America

Pages from

1

Pages to

9

Pages count

9

URL

https://link.springer.com/article/10.1007%2Fs11663-021-02264-w

Full text in the Digital Library

http://hdl.handle.net/11012/200947

BibTex

@article{BUT171978,
  author="Ebrahim {Karimi-Sibaki} and Abdellah {Kharicha} and Mehran {Abdi} and Alexander {Vakhrushev} and Menghuai {Wu} and Andreas {Ludwig} and Jan {Boháček}",
  title="A Numerical Study on the Influence of an Axial Magnetic Field (AMF) on Vacuum Arc Remelting (VAR) Process",
  journal="METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE",
  year="2021",
  volume="52",
  number="3",
  pages="1--9",
  doi="10.1007/s11663-021-02264-w",
  issn="1073-5615",
  url="https://link.springer.com/article/10.1007%2Fs11663-021-02264-w"
}