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Influence of Additive Manufacturing and Subsequent Treatments on the Corrosion Behaviour of Different Titanium Alloys

  • Corrosion is a process that needs to be viewed carefully in context with the examined metals or alloys as well as the ambient conditions (e.g. electrolyte composition). Additive manufacturing processes with their formation a of microscale melt and rapid solidification of that melt can lead to microstructures that can differ extremely from conventional manufacturing processes in terms of their homogeneity and distribution of (alloying) elements. Therefore, process–related local inclusions can be formed with higher amounts of certain alloying elements than their surroundings which result in different chemical potentials. Corrosion experiments performed with additive manufactured parts (e.g. made of pure titanium or titanium alloys) show the release of potentially unwanted alloy constituents, which in turn can affect the long–term behavior of the part negatively. As part of the investigations it is shown what kind of influence the additive manufacturing process can have on such built parts and how subsequently applied treatments like machining or heat treatment can alter the properties of the material and produced component. Different methods like metallography or potentiodynamic polarization with subsequent mass spectrometric analyses were eventually performed to investigate the mentioned material properties and behaviour.

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Metadaten
Author:Dennis Pede, Mo Li, Tobias Poleske, Hadi Mozaffari-Jovein
ISBN:978-1-926872-47-6
Parent Title (English):Proceedings of the 59th Conference of Metallurgists, COM 2020: The Canadian Institute of Mining, Metallurgy and Petroleum
Document Type:Conference Proceeding
Language:English
Year of Completion:2020
Release Date:2021/01/13
Tag:Corrosion; Mass spectrometry; Potentiodynamic polarization; Selective laser melting; Titanium alloys
First Page:1391
Last Page:1405
Licence (German):License LogoEs gilt das UrhG