Advanced characterization of alloys by using ex-and in-situ high resolution Scanning Transmission Electron Microscopy

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Micro- and nano-structure particularities of new materials for specific applications, such as additive manufacturing, are influenced by atomic scale effects. In order to understand and exploit these effects, advanced ex- and in-situ characterization methods are necessary. This paper presents advanced microscopic methods correlated with theoretical calculations that were used to understand the mechanisms of twin formation, spinodal decomposition, pipe diffusion and nucleation in different alloy types. Two- and three-dimensional STEM acquisition of high angular annular dark field images (HAADF) and spectrum image data sets of both dispersive X-ray (EDX) and electron energy loss spectrometry (EELS) are key tools for the localization and identification of the alloying elements with low concentration as well as their influence on stable and metastable phases. [1-6] Information regarding the recrystallization of grains, diffusion of alloying elements and nucleation of new phases at different temperatures was obtained by in-situ high resolution STEM observations. 1. Li JH., Albu M., Hofer F., Schumacher P., Acta Mater. 83 (2015), 187?202. 2. Albu M., et al, Nature Scientific Reports 6 (2016), 31635 3. Gariboldi E., et al, Acta Mater. 125 (2017), 50-57 4. Li JH., et al, Adv. Eng. Mat. 19 (2017), 1600705 5. Haberfelner G., Orthacker A., Albu M., Li JH., Kothleitner G., Nanoscale 6 (2014), 14563-14569 6. Orthacker A, et al, Nature Materials 17 (2018), 1101-1107 7. Part of this research has received funding from the FFG under project no. SP2018-003-006
Originalspracheenglisch
TitelEuropean Materials Reserch Society
SeitenZ 6.12
PublikationsstatusVeröffentlicht - 2019
VeranstaltungE-MRS 2019 Spring Meeting - Nizza, Nizza, Frankreich
Dauer: 27 Mai 201931 Mai 2019
https://www.european-mrs.com

Konferenz

KonferenzE-MRS 2019 Spring Meeting
KurztitelE-MRS 2019
LandFrankreich
OrtNizza
Zeitraum27/05/1931/05/19
Internetadresse

ASJC Scopus subject areas

  • !!Materials Science(all)

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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