Detail publikace

A Coupled Magnetohydrodynamics (MHD) and Thermal Stress-Strain Model to Explore the Impact of Gas Cooling on Ingot Solidification Shrinkage in Vacuum Arc Remelting (VAR) Process

BOHÁČEK, J. KARIMI-SIBAKI, E. VAKHRUSHEV, A. MRÁZ, K. HVOŽĎA, J. WU, M. KHARICHA, A.

Originální název

A Coupled Magnetohydrodynamics (MHD) and Thermal Stress-Strain Model to Explore the Impact of Gas Cooling on Ingot Solidification Shrinkage in Vacuum Arc Remelting (VAR) Process

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

An advanced 2D axisymmetric magnetohydrodynamics model, including calculations for electromagnetic, thermal, and flow fields, fully coupled with a thermal stress-strain model, allowing the computation of solid mechanical parameters like stress, strain, and deformation within the ingot of the vacuum arc remelting process is presented. This process encounters challenges due to solidification shrinkage, which causes losing contact between the ingot and the mold, reducing the cooling efficiency of the system, resulting in a deeper melt pool and decreasing ingot quality. Herein, the width of the air gap along the ingot, the precise position of contact between the ingot and mold, and the profile of the melt pool, affected by gas cooling, are calculated. The global pattern of transport phenomena, such as (electro-vortex) flow and electromagnetic fields in the bulk of the ingot, is insensitive to helium gas cooling through the shrinkage gap. However, including gas cooling significantly improves heat removal through the mold, which consequently reduces the pool depth of the Alloy 718 ingot, leading to an improvement in the quality of the ingot.

Klíčová slova

vacuum arc remelting; magnetohydrodynamics; Lorentz force; thermal stress-strain; coupling; gas cooling; shrinkage; gap

Autoři

BOHÁČEK, J.; KARIMI-SIBAKI, E.; VAKHRUSHEV, A.; MRÁZ, K.; HVOŽĎA, J.; WU, M.; KHARICHA, A.

Vydáno

4. 9. 2024

ISSN

1073-5615

Periodikum

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

Ročník

55

Číslo

6

Stát

Spojené státy americké

Strany od

4408

Strany do

4417

Strany počet

10

URL

https://link.springer.com/article/10.1007/s11663-024-03254-4

BibTex

@article{BUT189481,
  author="Jan {Boháček} and Ebrahim {Karimi-Sibaki} and Alexander {Vakhrushev} and Kryštof {Mráz} and Jiří {Hvožďa} and Menghuai {Wu} and Abdellah {Kharicha}",
  title="A Coupled Magnetohydrodynamics (MHD) and Thermal Stress-Strain Model to Explore
the Impact of Gas Cooling on Ingot Solidification
Shrinkage in Vacuum Arc Remelting (VAR) Process
",
  journal="METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE",
  year="2024",
  volume="55",
  number="6",
  pages="10",
  doi="10.1007/s11663-024-03254-4",
  issn="1073-5615",
  url="https://link.springer.com/article/10.1007/s11663-024-03254-4"
}