Title: Methodology for observation of maraging tool steel after 3D printing using FIB and STEM mode
Authors: Opatová, Kateřina
Kučerová, Ludmila
Zetková, Ivana
Citation: JIRKOVÁ, Hana ed.; JENÍČEK, Štepán ed. Proceedings PING 2019: modern trends in material engineering: 10.-13.09.2019, Pilsen. 1. vyd. Plzeň: University of West Bohemia, 2019, s. 84. ISBN 978-80-261-0879-5.
Issue Date: 2019
Publisher: University of West Bohemia
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/35257
ISBN: 978-80-261-0879-5
Keywords: FIB;STEM;vysokopevnostní ocel;3D tisk
Keywords in different language: FIB;STEM;maraging steel;3D printing
Abstract in different language: The components of the maraging tool steel produced by 3D printing are further heattreated after printing. It is a stress relief annealing and precipitation hardening since it is martensitic precipitation-hardenable steel. During this process, in the steel microstructure, precipitates of Ni3Ti and Fe2Mo or Fe7Mo are formed, which significantly contribute to an increase in ultimate tensile strength, hardness, and toughness. To understand the precipitation processes, it is necessary to describe the particles in detail. However, they are very small in size and cannot be examined properly by a light microscope (LM) or by scanning electron microscope (SEM). A possible way to investigate and describe these precipitates is to produce a thin lamella using a focused ion beam (FIB) in the electron microscope chamber, where scanning transmission electron microscopy (STEM) is subsequently used for observation. A lamella was prepared from the DMLS (Direct Metal Laser Sintering) printed part by an ion beam for observation in STEM mode. The experiment took place at the Zeiss AURIGA scanning electron microscope, equipped with an ion gun and also provided with STEM capabilities for thin samples. The lamella preparation methodology was gradually optimized to achieve sufficient resolution during observation of these very fine microstructures produced by 3D printing.
Rights: © University of West Bohemia
Appears in Collections:Konferenční příspěvky / Conference Papers (RTI)
Proceedings PING 2019: modern trends in material engineering
Proceedings PING 2019: modern trends in material engineering

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