Inductive hot-pressing of titanium and titanium alloy powders Articles uri icon

publication date

  • January 2012

start page

  • 672

end page

  • 679

issue

  • 3

volume

  • 131

International Standard Serial Number (ISSN)

  • 0254-0584

abstract

  • Inductive hot-pressing is a field-assisted sintering process (FAST) in which an electrical current is used to enhance the densification of the powder. Inductive hot-pressing could be employed to enable titanium powder to reach a higher density in less time than the pressing and sintering process. In this study, titanium and titanium alloy powders with different features were processed by means of inductive hot-pressing. The influence of processing temperature on density, microstructure, quantity of interstitial elements and hardness was investigated. Generally, practically fully dense materials were obtained without any carbon pick-up, even if the materials were in contact with the graphite matrix during processing. Nevertheless, there was an increment of the nitrogen content and some oxygen pick-up, especially for the powders with smaller particle size. Hardness is not significantly affected by the pressing temperature, but it strongly depends on the amount of interstitials.

keywords

  • inductive hot-pressing; powder metallurgy; titanium; ti-6al-4v; ti-3al-2.5v; ti-6al-7nb