Modeling and simulation of anode melting pool flow under the action of high-current vacuum arc

L Wang, S Jia, Y Liu, B Chen, D Yang… - Journal of Applied Physics, 2010 - pubs.aip.org
In this paper, a transient magnetohydrodynamic (MHD) model of an anode melting pool
(AMP) flow (AMPF) is established. Mass equation, momentum equations along axial, radial …

Modelling of plasma generation and expansion in a vacuum arc: Application to the vacuum arc remelting process

P Chapelle, JP Bellot, H Duval, A Jardy… - Journal of Physics D …, 2001 - iopscience.iop.org
As part of a complete theoretical description of the behaviour of the electric arc in the
vacuum arc remelting process, a model has been developed for the column of plasma …

[HTML][HTML] Impact of a Transient and Asymmetrical Distribution of the Electric Arc on the Solidification Conditions of the Ingot in the VAR Process

PO Delzant, P Chapelle, A Jardy, A Matveichev… - Metals, 2022 - mdpi.com
Vacuum Arc Remelting is an important method of processing reactive and refractory liquid
metal alloys, including titanium and zirconium alloys. Recent measurements of the electric …

Thermal behaviour of the consumable electrode in the vacuum arc remelting process

H El Mir, A Jardy, JP Bellot, P Chapelle… - Journal of Materials …, 2010 - Elsevier
The thermal behaviour of the consumable electrode is studied using both experimental
measurements and mathematical modelling. Infrared thermography measurements …

Dynamic recrystallization in zirconium alloys

JK Chakravartty, R Kapoor… - Journal of ASTM …, 2010 - asmedigitalcollection.asme.org
In this investigation, the characteristics of dynamic recrystallization (DRX) in five Zr-alloys,
namely, commercial pure zirconium (CP-Zr), Zircaloy-2 (Zr–Sn), Zr-2.5 Nb (Zr–Nb), Zr-2.5 Nb …

Optical investigation of the behavior of the electric arc and the metal transfer during vacuum remelting of a Ti alloy

P Chapelle, C Noël, A Risacher, J Jourdan… - Journal of Materials …, 2014 - Elsevier
High-speed camera imaging and optical emission spectroscopy have been used for
investigating the structure of the electric arc and the transfer mechanisms of the liquid metal …

Investigation of arc dynamics during vacuum arc remelting of a Ti64 alloy using a photodiode based instrumentation

PO Delzant, P Chapelle, A Jardy, J Jourdan… - Journal of Materials …, 2019 - Elsevier
Understanding the arc dynamics during VAR is important for controlling the final quality of
the ingot, as the spatial and temporal distribution of the arc dictates the electric current and …

Plasma diagnostic by emission spectroscopy during vacuum arc remelting

P Chapelle, T Czerwiec, JP Bellot… - Plasma Sources …, 2002 - iopscience.iop.org
The plasma produced during vacuum arc remelting of a Zircaloy4 electrode has been
investigated by optical emission spectroscopy. Spatial variations of plasma emission along …

Arc behaviour and cathode melting process during VAR: an experimental and numerical study

A Jardy, P Chapelle, A Malik, JP Bellot… - ISIJ …, 2013 - jstage.jst.go.jp
The present study aims to understand the melting of the consumable electrode in the VAR
process and gain some insight into the influence of an ensemble arc motion on the melting …

GH4742 合金真空自耗铸锭中夹杂物分布特征

杨曙磊, 王曦伟, 田强, 王田田, 杨树峰 - 特殊钢, 2024 - specialsteeljournal.com
以ϕ570 mm 的合金锭作为自耗重熔的电极, 通过起弧, 稳定熔炼和热封顶三个阶段, 制备ϕ660
mm 的真空自耗铸锭, 熔炼过程共历时860 min. 采用场发射电子扫描显微镜和夹杂物自动扫描 …