| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1523586 | Materials Chemistry and Physics | 2012 | 8 Pages |
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.
► Prealloying and master alloy addition are used to make titanium alloy powders. ► Hot-pressing is used to make fully dense titanium alloys. ► Heterogeneous microstructures with plate-like grains are attained in elemental titanium. ► Nitrogen content increases with processing temperature. ► The amount of interstitial elements dissolved greatly influences the hardness.
