Ex- and in-situ high resolution microstructure investigations of additive manufactured parts

Mihaela Albu, A.M. Vilardell, Bernd Panzirsch, Hartmuth Schröttner, Paola Bassani, Robert Krisper

Research output: Contribution to conferenceAbstract

Abstract

Additively manufactured robust complex metallic structures are very promising for field-specific applications in aerospace, automotive, energy, and medical implants. The micro- and nano-structure particularities of the materials for such specific applications are influenced by atomic scale effects. In particular, the very fast cooling rates during the additive manufacturing process affect the microstructure leading to grain refinement, disordered crystalline segregations at the grain boundaries, the formation of complex precipitates and amorphous phases. In order to understand and exploit these effects, advanced ex- and in-situ characterization methods are necessary.
This paper presents advanced correlative high-resolution microscopy studies performed on 3D-printed parts [1-3], providing information on morphology, chemical composition, and crystallinity from the micrometer scale down to the atomic scale. The studies were performed using scanning and transmission electron microscopy coupled with spectroscopic techniques such as electron energy loss spectroscopy and energy dispersive X-ray spectroscopy, which are key tools for localizing and identifying the alloying elements and their influence on stable and metastable phases.
The evolution of the microstructure was first studied in detail for the as-built and heat-treated parts to better understand the mechanical properties. In addition, in-situ heating measurements provided information on the evolution of nanometric phases and the coarsening/shrinkage of grains, the diffusion of alloying elements, and appearance of secondary phases at different temperatures.
Original languageEnglish
Publication statusPublished - 2021
Event2021 European Congress and Exhibition on Advanced Materials and Processes : EUROMAT 2021 - Virtuell, Virtuell, Austria
Duration: 13 Sep 202117 Sep 2021
https://www.euromat2021.org/

Conference

Conference2021 European Congress and Exhibition on Advanced Materials and Processes
Abbreviated titleEUROMAT 2021
Country/TerritoryAustria
CityVirtuell
Period13/09/2117/09/21
Internet address

ASJC Scopus subject areas

  • General Materials Science

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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