Print Email Facebook Twitter Electron microscopy investigations of А356 alloy modified with nanoparticles Title Electron microscopy investigations of А356 alloy modified with nanoparticles Author Dimitrova, Rositza (Bulgarian Academy of Sciences) Petrov, R.H. (TU Delft (OLD) MSE-3; Universiteit Gent) Kuzmanov, Pavel (Bulgarian Academy of Sciences) Velikov, Аngel (Bulgarian Academy of Sciences) Manolov, Valentin (Bulgarian Academy of Sciences) Date 2019 Abstract Two types of A356 alloy castings in initial and modified with nanoparticles condition produced by gravitational casting were studied. Samples, as-cut from the castings, were subjected to light optical microscopy (LM), thermal analyses, Electron Backscattered Diffraction (EBSD) and Scanning Transmission Electron Microscopy (STEM) analyses. Results, obtained by EBSD, confirmed that there is grain refinement in samples from castings with added nanoparticles compared to the initial ones. STEM analysis shows agglomerates of nanoparticles in examined foils. Nanoparticles’ position in the microstructure confirms the hypothesis that they act as nucleating sites during the alloy solidification, which is the reason for observed fine-grained microstructure. Subject A356EBSDEDXLMMicrohardnessModificationNanoparticlesSTEMThermal analyses To reference this document use: http://resolver.tudelft.nl/uuid:9de1ebe9-60d2-4ba6-9663-a146845f611c DOI https://doi.org/10.3390/met9121294 ISSN 2075-4701 Source Metals, 9 (12) Part of collection Institutional Repository Document type journal article Rights © 2019 Rositza Dimitrova, R.H. Petrov, Pavel Kuzmanov, Аngel Velikov, Valentin Manolov Files PDF metals_09_01294.pdf 3 MB Close viewer /islandora/object/uuid:9de1ebe9-60d2-4ba6-9663-a146845f611c/datastream/OBJ/view