|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation Mechanisms
||L-2: Characterization of a Biocompatible Co-Cr-W Alloy by means of Correlative Microscopy and Nanoindentation Experiments
||Irmgard Weissensteiner, Patrick Voigt, Helmut Clemens, Verena Maier-Kiener
|On-Site Speaker (Planned)
In dental technology implants are often produced by a CAD/CAM process from cast Co-Cr alloys. The high content of additional alloying elements leads to the formation of intermetallic phases which deteriorate the machinability. To optimize the microstructure a detailed material characterization is required. In this work, the characterization of a Co-24Cr-8W-3Mo (m.%) alloy was performed by SEM in order to evaluate the phase fractions and EDX as well as atom probe tomography to analyze the distribution of the alloying elements in the constituent phases. EBSD was used to determine the crystal structure of the intermetallic phases. The influence of hot isostatic pressing on phase chemistry, phase fractions and hence the mechanical properties was studied by nanoindentation experiments. A slight strain rate sensitivity, a crystal orientation anisotropy as well as a different susceptibility to strain-induced martensitic transformation was observed, which is finally correlated to the different microstructures and matrix compositions.
||Planned: Supplemental Proceedings volume