Processing of Titanium Powder into Consolidated Parts & Sheet

Abstract:

The processing of titanium powder has been presumed to have potential to reduce the cost of final parts. The non-melt routes to efficient powder processing require consistent flow, adequate tap density and minimal pick-up of interstitial contaminants. The powder produced by the continuous sodium reduction of titanium tetrachloride has a coral-like morphology and low tap density. In order to achieve the potential of low cost parts, the powder will need to be modified to match the optimum feed conditions of the particular processing technique. The approaches to control interstitial pick-up will be discussed in the context of manufacturing technology: contribution of raw materials (10%), passivation (60%) and densification (30%). A comparison of densification with a change of milling fluid media (argon to water will be made with the unexpected decrease in oxygen pick-up when using water). Powder spheroidization via gas atomization of Armstrong Process^® powder will be discussed. The product forms where the advantages of using powder can be exploited have to be carefully selected. Sheet is one such form: the results of using titanium powder to directly make titanium sheet will be presented.

• Periodical: Key Engineering Materials (Volume 551)
• Pages: 57-66
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.551.57
• Online since: May 2013
• Authors: Damien Mangabhai, Kerem Araci, M. Kamal Akhtar, Nigel A. Stone, Delphine Cantin

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