LightMAT 2023
Lecture
22.06.2023 (CEST)
Tuning the material properties of Ti-5553 by specific modification of the process parameters during LPBF
CK

Dr.-Ing. Clemens Kunz

Leibniz IFW Dresden

Kunz, C. (Speaker)¹; Worpenberg, S.²; Kühn, U.³; Bergmann, B.²; Denkena, B.²; Hufenbach, J.K.¹
¹Institute for Complex Materials/Leibniz IFW Dresden; ²Institute of Production Engineering and Machine Tools/Leibniz University Hannover, Garbsen (Germany); ³Leibniz IFW Dresden
Vorschau
20 Min. Untertitel (CC)

Additive manufacturing technologies enable the processing of near-net-shape components with complex geometries and to overcome restrictions of conventional manufacturing methods. In the presented study, low density (4,67 g/cm3) metastable beta titanium alloy Ti-5Al-5V-5Mo-3Cr (wt%) (Ti-5553) was processed via laser powder bed fusion (LPBF). The alloy is characterized by excellent mechanical properties and is therefore used industrially for complex load-bearing components (e.g. landing gear of airplanes) [1]. The titanium alloy is generally known as a hard to- cut material due to its thermo-mechanical properties, which impedes post-processing of Ti-5553 by machining [2]. However, LPBF offers the possibility to tailor the microstructure by a specific adjustment of the process parameters (Fig. 1) for an improved post processing. These microstructural changes as well as the build orientation in the LPBF process and its influence is evaluated and presented via a wide variety of techniques such as SEM, EBSD, XRD, tensile, compression and hardness testing (Fig. 1). Finally, an outlook on process-microstructure-machinability properties is given.

Abstract

Abstract

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