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Characteristics of Ti6Al4V Powders Recycled from Turnings via the HDH Technique

Department of Materials Science and Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway
Department of Metallurgical and Materials Engineering, Istanbul Technical University, Sariyer, Istanbul 34469, Turkey
IME Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestraße 3, Aachen 52056, Germany
Author to whom correspondence should be addressed.
Metals 2018, 8(5), 336;
Received: 28 March 2018 / Revised: 2 May 2018 / Accepted: 7 May 2018 / Published: 9 May 2018
(This article belongs to the Special Issue Advances in Synthesis of Metallic, Oxidic and Composite Powders)
The objective of this research is for Ti6Al4V alloy turnings, generated during the machining of implants, to produce powders for the fabrication of Ti base coating via the cold spray method. In order to decrease the cost of powder production and increase the recycling rate of the turnings, the hydrogenation-dehydrogenation (HDH) process has been utilised. The HDH process consists of the following sequence: surface conditioning of the turnings, hydrogenation, ball milling (for powder production), and dehydrogenation. Afterwards, the properties of the recycled powder were analysed via phase, chemical, and morphological examinations, and size and flowability measurements. Usability of the powder in additive manufacturing applications has been evaluated via examining the characteristics of the deposit produced from this powder by the cold spray method. In short, promising results were obtained regarding the potential of the recycled powders in additive manufacturing after making minor adjustments in the HDH process. View Full-Text
Keywords: Ti6Al4V; HDH; powder metallurgy; powder synthesis Ti6Al4V; HDH; powder metallurgy; powder synthesis
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MDPI and ACS Style

Gökelma, M.; Celik, D.; Tazegul, O.; Cimenoglu, H.; Friedrich, B. Characteristics of Ti6Al4V Powders Recycled from Turnings via the HDH Technique. Metals 2018, 8, 336.

AMA Style

Gökelma M, Celik D, Tazegul O, Cimenoglu H, Friedrich B. Characteristics of Ti6Al4V Powders Recycled from Turnings via the HDH Technique. Metals. 2018; 8(5):336.

Chicago/Turabian Style

Gökelma, Mertol, Dilara Celik, Onur Tazegul, Huseyin Cimenoglu, and Bernd Friedrich. 2018. "Characteristics of Ti6Al4V Powders Recycled from Turnings via the HDH Technique" Metals 8, no. 5: 336.

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