Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (8/8 displayed)

  • 2019Helical dislocations: Observation of vacancy defect bias of screw dislocations in neutron irradiated Fe–9Cr42citations
  • 2016Effect of the milling atmosphere on the microstructure and mechanical properties of a ODS Fe-14Cr model alloy16citations
  • 2015Mechanical and microstructural investigations of tungsten and doped tungsten materials produced via powder injection molding68citations
  • 2013Recent progress in research on tungsten materials for nuclear fusion applications in Europe687citations
  • 2013Recent progress in research on tungsten materials for nuclear fusion applications in Europe687citations
  • 2008Residual stress distributions around indentations and scratches in polycrystalline Al2O3 and Al2O3/SiC nanocomposites measured using fluorescence probes37citations
  • 2002Modelling the initiation of cleavage fracture of ferritic steels33citations
  • 2001Residual stress and subsurface damage in machined alumina and alumina/silicon carbide nanocomposite ceramics67citations

Places of action

Chart of shared publication
Tarleton, E.
1 / 34 shared
Haley, J. C.
1 / 1 shared
Odette, G. R.
1 / 2 shared
Lozano-Perez, S.
1 / 81 shared
Cocks, A. C. F.
1 / 14 shared
Liu, Fengxian
1 / 2 shared
Castro Bernal, María Vanessa De
1 / 15 shared
Leguey Galán, Teresa
1 / 17 shared
Lozano Pérez, Sergio
1 / 7 shared
Bagot, P. A. J.
1 / 12 shared
Moody, M. P.
1 / 19 shared
Auger, María A.
1 / 16 shared
Armstrong, D. E. J.
3 / 9 shared
Rieth, Michael
1 / 58 shared
Britton, T. B.
1 / 4 shared
Hoffmann, J.
1 / 43 shared
Pintsuk, G.
3 / 29 shared
Weingärtner, Tobias
1 / 9 shared
Greuner, H.
3 / 19 shared
Gibson, J. S. K. L.
1 / 2 shared
Commin, L.
1 / 10 shared
Knabl, W.
1 / 8 shared
Antusch, S.
3 / 28 shared
Derby, Brian
2 / 45 shared
Wu, H. Z.
1 / 1 shared
Wu, H.
1 / 23 shared
Chart of publication period
2019
2016
2015
2013
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Co-Authors (by relevance)

  • Tarleton, E.
  • Haley, J. C.
  • Odette, G. R.
  • Lozano-Perez, S.
  • Cocks, A. C. F.
  • Liu, Fengxian
  • Castro Bernal, María Vanessa De
  • Leguey Galán, Teresa
  • Lozano Pérez, Sergio
  • Bagot, P. A. J.
  • Moody, M. P.
  • Auger, María A.
  • Armstrong, D. E. J.
  • Rieth, Michael
  • Britton, T. B.
  • Hoffmann, J.
  • Pintsuk, G.
  • Weingärtner, Tobias
  • Greuner, H.
  • Gibson, J. S. K. L.
  • Commin, L.
  • Knabl, W.
  • Antusch, S.
  • Derby, Brian
  • Wu, H. Z.
  • Wu, H.
OrganizationsLocationPeople

article

Helical dislocations: Observation of vacancy defect bias of screw dislocations in neutron irradiated Fe–9Cr

  • Tarleton, E.
  • Haley, J. C.
  • Odette, G. R.
  • Lozano-Perez, S.
  • Roberts, S. G.
  • Cocks, A. C. F.
  • Liu, Fengxian
Abstract

We have analysed the microstructure of a model alloy of Fe9Cr irradiated with neutrons to a dose of 1.6 dpa at 325°C. Helical dislocations comprise a major part of the damage; these formed from the interaction of pre-existing screw dislocations with irradiation-induced defects. We have investigated the process behind how these helices form, and how they cause local clustering of dislocation loops. Specifically, we have shown experimentally that the interaction of vacancy defects with pre-existing screw dislocations causes the formation of mixed screw-edge helical dislocations. Interstitials and vacancies were generated in equal numbers, which shows that the screw dislocations must have acted as vacancy-biased sinks.<br/><br/>Helical dislocations in general were analysed from a theoretical perspective, and three Dimensional Discrete Dislocation Dynamics (3D-DDD) was used to develop a model for the formation and growth of a vacancy-fed helical dislocation.<br/><br/>Since the helical dislocations cause the removal of vacancies from the local microstructure, this leaves a higher supersaturation of interstitials close to the dislocations. We argue that this supersaturation is responsible for enhanced interstitial loop coarsening, leading to a higher proportion of visible interstitial clusters in the vicinity of helical dislocations. These findings offer a new perspective on how dislocations affect the spatial homogeneity of radiation damage.

Topics
  • impedance spectroscopy
  • cluster
  • dislocation
  • interstitial
  • clustering
  • vacancy
  • dislocation dynamics