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  1. Employees

Språkvelger

Norsk

Christoph Hell

Christoph Hell

PhD Candidate
Department of Physics

christoph.hell@ntnu.no
Realfagbygget, B4-121, Gløshaugen
About Publications Media

About

Background

I received my B.Sc. and M.Sc. in Materials Science and Engineering from Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Germany. My bachelor curriculum covered the broad field of Materials Science, from functional materials, e.g. biomaterials and semi-conductors, to structural materials, e.g. superalloys and inorganic non-metallic materials.
My master was mainly focused on advanced materials characterization, mechanical properties of materials and processing of metals.

Noteworthy:
2013-2018: Research assistant at the Institute of Micro- and Nanostructure Research
2015-2016: Operator at the electron microscope laboratory of Unisversidade de Brasília (UnB), Brazil. 
2018: ERASMUS scholarship at Universitetet i Oslo (UiO), Norway

Research Activities

In my doctoral research I investigate clustering in the 6xxx Aluminum (Al) family. Clusters are the first (atomically small) traces of a new phase which ultimately give the alloy its physical and mechanical properties. By understanding the clustering behaviour, processes and alloys can be tailor made and engineered to yield optimal properties. Increasing the thermal stability or the strength of Al alloys furthers the replacement of heavier structural materials, e.g. steels, by such a light-weight solution. My research is therefor contributing to a more sustainable and greener world and is part of the KPN project "SumAl".

My daily bread-and-butter is:

  • Electron Microscopy to prepare samples and image atomical arrangements
  • Material Characterization to get further indirect insights
  • General Metallurgy for producing samples

 

Teaching Activities

  • TFY4185: Measurement Techniques
  • TFY4190: Instrumentation

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2023

  • Hell, Christoph Martin; Holmedal, Bjørn; Bjørge, Ruben; Marioara, Calin Daniel; Holmestad, Randi. (2023) The microstructural origin of a hardness double-peak in an age-hardened EN-AW 6082. Acta Materialia
    Academic article
  • Holmestad, Randi; Thronsen, Elisabeth; Kawahara, Yasuhito; Bergh, Tina; Sørhaug, Jørgen Andre; Hell, Christoph Martin. (2023) Nucleation and Phase Development of Precipitates in Age-hardenable Aluminium Alloys Studied by 4D-STEM. Microscopy and Microanalysis
    Academic article

2022

  • Hell, Christoph Martin; Søreide, Hanne-Sofie Marie Scisly; Bjørge, Ruben; Marioara, Calin Daniel; Li, Yanjun; Holmestad, Randi. (2022) Influence of natural aging and ramping before artificial aging on the microstructure of two different 6xxx alloys. Journal of Materials Research and Technology (JMR&T)
    Academic article
  • Tvedt, Haakon; Marioara, Calin Daniel; Thronsen, Elisabeth; Hell, Christoph Martin; Andersen, Sigmund Jarle; Holmestad, Randi. (2022) AutomAl 6000: Semi-automatic structural labelling of HAADF-STEM images of precipitates in Al–Mg–Si(–Cu) alloys. Ultramicroscopy
    Academic article

2019

  • Hell, Christoph. (2019) Numerical and Experimental Investigation of Nucleation during Selective Electron Beam Melting. Friedrich-Alexander-University Erlangen-Nuremberg
    Masters thesis

2015

  • Hell, Christoph. (2015) in situ light- and ex situ electron microscopy on the solid-state dewetting behavior of Au thin films under different atmospheres. Friedrich-Alexander-University Erlangen-Nuremberg
    Thesis at a second degree level

Journal publications

  • Hell, Christoph Martin; Holmedal, Bjørn; Bjørge, Ruben; Marioara, Calin Daniel; Holmestad, Randi. (2023) The microstructural origin of a hardness double-peak in an age-hardened EN-AW 6082. Acta Materialia
    Academic article
  • Holmestad, Randi; Thronsen, Elisabeth; Kawahara, Yasuhito; Bergh, Tina; Sørhaug, Jørgen Andre; Hell, Christoph Martin. (2023) Nucleation and Phase Development of Precipitates in Age-hardenable Aluminium Alloys Studied by 4D-STEM. Microscopy and Microanalysis
    Academic article
  • Hell, Christoph Martin; Søreide, Hanne-Sofie Marie Scisly; Bjørge, Ruben; Marioara, Calin Daniel; Li, Yanjun; Holmestad, Randi. (2022) Influence of natural aging and ramping before artificial aging on the microstructure of two different 6xxx alloys. Journal of Materials Research and Technology (JMR&T)
    Academic article
  • Tvedt, Haakon; Marioara, Calin Daniel; Thronsen, Elisabeth; Hell, Christoph Martin; Andersen, Sigmund Jarle; Holmestad, Randi. (2022) AutomAl 6000: Semi-automatic structural labelling of HAADF-STEM images of precipitates in Al–Mg–Si(–Cu) alloys. Ultramicroscopy
    Academic article

Report

  • Hell, Christoph. (2019) Numerical and Experimental Investigation of Nucleation during Selective Electron Beam Melting. Friedrich-Alexander-University Erlangen-Nuremberg
    Masters thesis
  • Hell, Christoph. (2015) in situ light- and ex situ electron microscopy on the solid-state dewetting behavior of Au thin films under different atmospheres. Friedrich-Alexander-University Erlangen-Nuremberg
    Thesis at a second degree level

Media

2023

  • Academic lecture
    Holmestad, Randi; Thronsen, Elisabeth; Kawahara, Yasuhito; Bergh, Tina; Sørhaug, Jørgen Andre; Hell, Christoph Martin. (2023) Nucleation and Phase Development of Precipitates in age-hardenable Aluminium Alloys studied by 4D-STEM. Microscopy Society America Microscopy and Analysis , Minneapolis 2023-07-23 - 2023-07-27

2021

  • Academic lecture
    Thronsen, Elisabeth; Lervik, Adrian; Hell, Christoph Martin; Wenner, Sigurd; Marioara, Calin Daniel; Bjørge, Ruben. (2021) Studying clusters and nano-precipitates in Aluminium alloys using (S)PED and ADF-STEM. Microscopy Society of America Microscopy and Microanalysis (M&M) 2021 , USA (virtual meeting, supposed to be in Pittsburg) 2021-08-01 - 2021-08-05
  • Academic lecture
    Thronsen, Elisabeth; Lervik, Adrian; Hell, Christoph Martin; Bjørge, Ruben; Marioara, Calin Daniel; Wenner, Sigurd. (2021) Clustering and precipitate nucleation in Al alloys studied by SPED and HAADF-STEM. Ernst Ruska-Centrum für Mikroskopie und Spektroskopie mit El PICO 2021 (Conference on Frontiers of Aberration Corrected Electron Microscopy) , Virtuell 2021-05-02 - 2021-05-06

2020

  • Academic lecture
    Sunde, Jonas Kristoffer; Lervik, Adrian; Thronsen, Elisabeth; Hell, Christoph Martin; Christiansen, Emil; Marioara, Calin Daniel. (2020) How TEM is used in aluminium alloy development. Norsk metallurgisk selskap Nasjonal konferanse for Materialteknologi 2020 , online 2020-12-02 - 2020-12-03

2017

  • Poster
    Hell, Christoph. (2017) Quantitative electron diffraction study of y and y' lattice parameters in a model Co- based superalloy. MC2017 , Lausanne 2017-08-21 - 2017-08-25
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