Atomization of Ti-64 alloy using the EIGA process: comparison of the characteristics of powders produced in labscale and industrial-scale facilities

Affordable Access

Download Read

Atomization of Ti-64 alloy using the EIGA process: comparison of the characteristics of powders produced in labscale and industrial-scale facilities

Authors
  • Drawin, Stefan1, 2
  • Deborde, Agathe3
  • Thomas, Marc1, 2
  • Pierronnet, Michel4
  • Sasaki, Layla5
  • Delfosse, Jérôme6
  • Godde, Olivier1, 2
  • 1 1
  • 2 2
  • 3 3
  • 4 4
  • 5 5
  • 6 6
Type
Published Article
Journal
MATEC Web of Conferences
Publisher
EDP Sciences
Publication Date
Oct 12, 2020
Volume
321
Identifiers
DOI: 10.1051/matecconf/202032107013
Source
EDP Sciences
Disciplines
  • Extraction and Powder Production
License
Green
External links

Abstract

Titanium alloy powders, mostly the Ti-64 alloy with composition Ti-6Al-4V (wt.%), are extensively used for biomedical and high-demanding applications, e.g. in aeronautics. Advanced powder metallurgy processes like additive manufacturing are strong drivers for the production of high quality powders, insuring a good rheological behavior, a low porosity level in the parts and an adequate roughness. Ideally, fine spherical particles with no volume and surface defects are aimed at. Inert gas atomization is a process that is able to produce clean powders for such applications, especially for AM. To avoid the chemical reaction of titanium with the commonly used alumina crucibles, a crucible-free configuration has been designed in the EIGA process (Electrode induction melting Inert Gas Atomization). Two EIGA facilities are currently available in France for R&D purposes: a one-liter (nominal rod diameter/length (mm): 50/500) labscale facility at ONERA and an eight-liter capacity (100/1000) industrial-scale facility at the MetaFensch Institute. Using the smaller facility to screen and optimize atomization parameters and transfer them to the bigger facility is a tempting approach. This communication will show the characteristics of Ti-64 powders produced in both facilities, in terms of particle shape, particle size distribution, presence of satellites and porous particles.

Report this publication

Statistics

Seen <100 times
Downloaded <100 times