Lisa Toller-Nordström

PhD student in Engineering Sciences with Specialisation in Tribo Materials

Since 2013 it is known that cobalt powder is carcinogenic upon inhalation. Knowing this, it becomes important to investigate alternatives in processes where cobalt powder is used. One such process is the manufacturing of hardmetals, also known as cemented carbides, where cobalt powder traditionally is used as a binder phase for tungsten carbide.

When alternative binders are used the properties of the hardmetal changes and new phenomena can appear. In my research I try to understand how wear and deformation of hardmetal turning inserts are affected by the change in binder phase.

I use electron microscopy (SEM and TEM) and electron diffraction to study wear and deformation, ranging from macroscopic plastic deformation to small changes in the microstructure.

When cobalt is replaced with an iron rich binder phase it is possible to use the knowledge accumulated in the steel industry. One such project has been to investigate deformation induced martensite. To identify small deformed grains of a different phase in a deformed matrix I have used electron diffraction, including EBSD and TKD in the SEM and SAD and micro-probe in the TEM.

I have a BSc in Chemical Engineering with Engineering Physics and a MSc in Applied Physics from Chalmers University of Technology. I will defend my thesis 6 December 2019.

Lisa Toller

doctoral/PhD student at Department of Engineering Sciences, Applied Materials Science

Email:
Lisa.Toller-Nordstrom[AT-sign]angstrom.uu.se

Publications

  • Article in journal

    Toller-Nordström, Lisa; Mingard, K.; Norgren, Susanne

    Deformation induced martensite in a Fe-Ni-Co binder phase of a hardmetal

    Part of Materials Characterization, 2019.

  • Doctoral thesis, comprehensive summary
    Polhemsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala 2019-12-06 13:15

    Toller-Nordström, Lisa

    Insights into wear and deformation of alternative binder hardmetals

    Open access
  • Conference paper

    Wiklund, Urban; Emy, Guttenkunst; Grandin, Martina; Toller, Lisa

    Wear mechanisms of tools for exploration drilling

    Part of Euromat 2019, Stockholm, Sweden, p. 787-, 2019.

  • Licentiate thesis, comprehensive summary

    Toller, Lisa

    Alternative binder hardmetals for steel turning

    Open access
  • Article in journal

    Toller, Lisa; Liu, Chunxin; Holmström, Erik; Larsson, Tommy et al.

    Investigation of Cemented Carbides with Alternative Binders after CVD Coating

    Part of International journal of refractory metals & hard materials, p. 225-229, 2017.

  • Conference paper

    Toller, Lisa; Jacobson, Staffan; Norgren, Susanne

    Life time of cemented carbide inserts with Ni-Fe binder in steel turning

    2017.

  • Article in journal

    Toller, Lisa; Jacobson, Staffan; Norgren, Susanne

    Life time of cemented carbide inserts with Ni-Fe binder in steel turning

    Part of Wear, p. 1822-1829, 2017.

  • Conference paper

    Toller, Lisa; Norgren, Susanne

    Mechanisms of plastic deformation in WC-Co and WC-Ni-Fe turning inserts

    2017.

  • Conference paper

    Toller, Lisa; Norgren, Susanne

    Phase transformations in iron-based alternative binders for hardmetals

    2016.

  • Conference paper

    Toller, Lisa; Jacobson, Staffan; Norgren, Susanne

    Steel turning with nickel-iron bound hard metal tools – a study on microstructure in plastically deformed inserts

    2016.

  • Conference paper

    Toller, Lisa; Larsson, Tommy; Jacobson, Staffan; Norgren, Susanne

    CVD Coating Adhesion on Metal Cutting Insertswith Alternative Binders

    2015.

  • Conference paper

    Toller, Lisa; Liu, Chunxin; Holmström, Erik; Larsson, Tommy et al.

    Investigation of Cemented Carbides with Alternative Binders after CVD Coating

    2015.

  • Manuscript (preprint)

    Toller-Nordström, Lisa; Gee, Mark; Holmberg, Anders; Mingard, Ken et al.

    Abrasive wear of hardmetals with a binder phase forming deformation induced martensite

  • Manuscript (preprint)

    Toller-Nordström, Lisa; Norgren, Susanne

    Orientation of binder phase lamellae formed through grain boundary sliding in hardmetal turning inserts

  • Article in journal

    Toller-Nordström, Lisa; Östby, Jonas; Norgren, Susanne

    Towards understanding plastic deformation in hardmetal turning inserts with different binders

    Part of International journal of refractory metals & hard materials