Multi-scale material analyses

Multi-scale material analyses

– Research area 1
Atom Probe Tomography. Photo: Per Henning/NTNU


  • Develop a world leading platform and corresponding methodologies for multiscale and multidimensional structure characterisation and high-sensitivity chemical analysis of metals, alloys and advanced nanomaterials.
  • Contribute to other RAs by providing detailed characterisation information, revealing in-depth mechanisms, providing reliable experimental data, and validating through-process modelling.


Approach and methodology

  • Determine chemistry of joints, oxide layers, grain and interphase boundaries
  • Study microstructures in rapidly solidified / AM components
  • Utilize advanced image analysis and apply machine learning methods
  • Use tomography techniques to extract 3D information
  • Do in-situ heat treatment in SEM/EBSD and TEM/SPED



Develop correlative use of TEM and APT

State-of-the-art TEM and APT are complementary and provide experimental data on the crystal structure and chemistry down to the atomic scale - crucial for developing and validating atomic scale simulations and micro scale through-process models.

Develop and establish a framework for multiscale studies of material joints

The multiscale microstructure and complicated chemistry created when dissimilar materials (e.g. steel-Al) are joined together require use of the entire characterisation toolbox.

Establish in-situ characterisation techniques

Advanced in-situ characterisation tools will be utilized to quantify the kinetics of microstructure evolution during solidification, heat treatment and deformation, at several length and time scales.


RA 1 Leader

RA 1 Leader

Randi Holmestad. Photo

Randi Holmestad

Professor, NTNU