Detail publikace

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.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Vydáno

7. 7. 2021

Nakladatel

Springer

ISSN

1073-5615

Periodikum

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

Ročník

52

Číslo

3

Stát

Spojené státy americké

Strany od

1

Strany do

9

Strany počet

9

URL

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

Plný text v Digitální knihovně

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"
}