ResearchAdditive Fertigung
Degradation behaviour of additively manufactured components with local functional properties

Degradation behaviour of additively manufactured components with local functional properties

Year:  2020
Sponsors:  Lower Saxony Ministry for Science and Culture
Supervisor:Prof. Dr.-Ing. Hans Jürgen Maier 
Co-Supervisor:Dr.-Ing. Christian Klose  
Projekt ID:10
Location:Leibniz Universität Hannover, Institut für Werkstoffkunde (IW)

Motivation

Additively manufactured components with integrated functional areas or density gradients lead to the challenge that these may have a negative influence on important technological properties such as mechanical strength or corrosion resistance. Therefore, a comprehensive characterization of the property profile of functional components is required in order to establish the relationship between local microstructural features and degradation behaviour under mechanical load. With these data, additively manufactured functional components can be developed with regard to their intended field of application.

Objectives

Since, depending on the material composition and microstructure, both high-cyclic and low-cyclic stresses can dominate its damage and degradation behaviour, lifetime data (LCF, HCF) is to be determined for the materials developed in the consortium. Here, the morphologies and distributions of functional primary and secondary phases are of particular interest to the understanding of crack initiation and propagation mechanisms. Reference tests in dried air to record the damage development without media influence will be supplemented by comprehensive experiments on corrosion fatigue   

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