A parametric study of the vacuum arc remelting (VAR) process: Effects of arc radius, side-arcing, and gas cooling

E Karimi-Sibaki, A Kharicha, M Wu, A Ludwig… - … Materials Transactions B, 2020 - Springer
Main modeling challenges for vacuum arc remelting (VAR) are briefly highlighted
concerning various involving phenomena during the process such as formation and …

[HTML][HTML] Comparative investigation on ingot evolution and product quality under different arc distributions during vacuum arc remelting process

J Cui, B Li, Z Liu, F Qi, J Xu, J Zhang - Journal of Materials Research and …, 2022 - Elsevier
The arc characteristics especially the arc distribution of the vacuum arc remelting (VAR)
process are closely related to the ingot evolution and consequently the final product quality …

Melt convection and macrosegregation in the vacuum arc remelted Ti2AlNb ingot: Numerical methods and experimental verification

J Han, N Ren, Y Zhou, R Zhang, J Li, X Huang… - Journal of Materials …, 2022 - Elsevier
Vacuum arc remelting (VAR) is an ultra-high temperature and opaque process. It is difficult
to conduct experimental research on the melt flow behavior and the formation of …

Study on the molten pool behavior, solidification structure, and inclusion distribution in an industrial vacuum arc remelted nickel-based superalloy

P Zhao, Y Gu, S Yang, W Liu, J Li, J Du - Metallurgical and Materials …, 2023 - Springer
In this work, an industrial vacuum arc remelting (VAR) trial was conducted in a nickel-based
superalloy with 508 mm diameter. And the molten pool behavior, solidification structure, and …

A numerical study on the influence of an axial magnetic field (AMF) on vacuum arc remelting (VAR) process

E Karimi-Sibaki, A Kharicha, M Abdi… - … Materials Transactions B, 2021 - Springer
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 …

Numerical investigation of segregation evolution during the vacuum arc remelting process of Ni-based superalloy ingots

J Cui, B Li, Z Liu, F Qi, B Zhang, J Zhang - Metals, 2021 - mdpi.com
Segregation defects greatly affect the service performance and working life of castings
during the vacuum arc remelting (VAR) process. However, the corresponding research on …

Numerical investigation of grain structure under the rotating arc based on cellular automata-finite element method during vacuum arc remelting process

J Cui, B Li, Z Liu, Y Xiong, F Qi, Z Zhao… - Metallurgical and Materials …, 2023 - Springer
The assumption of transient rotating arc distribution is more closer to the actual vacuum arc
remelting (VAR) process, but there is still a lack of relevant research on the grain structure …

Effects of different melting technologies on the purity of superalloy GH4738

Z Chen, S Yang, J Qu, J Li, A Dong, Y Gu - Materials, 2018 - mdpi.com
The choice of melting technique is crucial for controlling the purity of a superalloy, which is
especially important because purity has come to limit progress in the superalloy field. In this …

Arc distribution during the vacuum arc remelting of Ti-6Al-4V

CR Woodside, PE King, C Nordlund - Metallurgical and Materials …, 2013 - Springer
Currently, the temporal distribution of electric arcs across the ingot during vacuum arc
remelting (VAR) is not a known or monitored process parameter. Previous studies indicate …

Anode activity in a high-current vacuum arc: Three-dimensional modeling and simulation

L Wang, X Zhou, H Wang, Z Qian, S Jia… - … on Plasma Science, 2012 - ieeexplore.ieee.org
In this paper, a transient 3-D model of the anode activity in a high-current vacuum arc
(HCVA) was established. The melting, flow, evaporation, and solidification of the anode …