SKM 2023 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 23: Poster II
MM 23.29: Poster
Dienstag, 28. März 2023, 18:15–20:00, P2/OG1+2
Mechanical properties of bicontinuous Ti networks formed via peritectic melting — •Nina Petersen1, Zhongyang Li1, Lukas Lührs1, and Jörg Weissmüller1,2 — 1Institute of Materials Physics and Technology, Hamburg University of Technology, Hamburg — 2Institute of Materials Mechanics, Helmholtz-Zentrum hereon, Geesthacht
Recent work has shown, that bicontinuous networks can be obtained from TiAg alloys by peritectic melting. These microstructures can then be transformed to open porous networks by selective etching of the Ti or Ag phase. For open porous Ti networks, the ligament size as well as the morphology can be influenced by variation of the melting parameters like temperature and duration of the heat treatment.
In this work, the microstructure of open porous Ti samples was analysed by scanning electron microscopy. The samples were then mechanically tested using continuous compressive loading as well as loading-unloading protocols. The strain was analysed with digital image correlation. The samples exhibit strength values of over 150 MPa that increase with the duration of the heat treatment. This research links the mechanical performance of these Ti networks to the morphological evolution of the microstructures during heat treatment.