|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals
||Microstructural Characterization of Graphite Nodules in Fatigue-tested Ductile Cast Iron
||Søren Fæster, Yubin Zhang, Niels Hansen, Dorte Juul Jensen
|On-Site Speaker (Planned)
Thick-walled ductile iron casts have been studied by applying (i) cooling rate calculations by FEM, (ii) microstructural characterization by 2D SEM and 3D X-ray tomography techniques and (iii) fatigue testing of samples drawn from components cast in sand molds and metal molds. An analysis has shown correlations between cooling rate, structure and fatigue strengths demonstrating the benefit of 3D structural characterization to identify possible causes of premature fatigue failure of ductile cast iron. These results are presented and discussed. Also the first results of synchrotron X-ray residual stress measurements at local sites in the matrix near graphite nodules are presented.
||Planned: Supplemental Proceedings volume