56. Metallographie-Tagung 2022 - Materialographie
Poster
Implementation of correlative microscopy for grain boundary characterization
LC

Dipl.-Ing. Lucía Campo

Universität des Saarlandes

Campo Schneider, L.P. (V)¹; Barrirero, J.¹; Guitar, A.¹; Pauly, C.¹; Mücklich, F.¹
¹Saarland University, Saarbrücken

Efficient steel design requires a deep understanding on how particular microconstituents affect the final properties of the material. Correlative techniques allow to tracing specific microstructural features, such as phase morphology, crystal structure, and chemical composition, from the bulk material to the nanometer scale. In this work, we introduce a methodology that allows to gain knowledge about the original location and crystallographic surroundings of a grain boundary (GB) together with its chemical characteristics at the near-atomic scale. As an example, we present the study of a prior austenite grain (PAG) boundary in a quenched steel, which was identified, traced, and analyzed by combining electron backscattered diffraction, transmission Kikuchi diffraction and atom probe tomography. The methodology can be applied for the study of the variation in the phase composition according to its location and processing history. Combining the chemical information with the mechanical testing results would allow to identify the conditions that improve the mechanical response of the material

Abstract

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Poster

Poster

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