Publication: Inductive hot-pressing of titanium and titanium alloy powders
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2012-01-05
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Elsevier
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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.
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Keywords
Inductive hot-pressing, Powder metallurgy, Titanium, Ti 6Al 4V, Ti 3Al 2.5V, Ti 6Al 7Nb
Bibliographic citation
Materials Chemistry and Physics, (2012), 131(3), 672-679.