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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Materials Map under construction

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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Narumi, T.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (5/5 displayed)

  • 2023Microstructure evolution induced by solidification and ferrite–austenite massive-like transformation in Fe–C alloyscitations
  • 2023Reconstruction of dendritic growth by fast tomography and phase field filtering3citations
  • 2023Observation of grain motion during semisolid deformation by using 4D-CT and 3DXRD2citations
  • 2023In situ observation of solidification in peritectic steels and evaluation of the strains induced in the solidifying shell2citations
  • 2020In situ observation of austenite coarsening induced by massive-like transformation during solidification in Fe–C alloys9citations

Places of action

Chart of shared publication
Tsuji, S.
1 / 1 shared
Nanri, T.
1 / 1 shared
Katsube, R.
2 / 2 shared
Yasuda, H.
5 / 11 shared
Nishiguchi, A.
1 / 1 shared
Nonomura, M.
1 / 1 shared
Nakano, K.
1 / 2 shared
Takaki, T.
1 / 5 shared
Xue, H.
1 / 2 shared
Ohta, K.
1 / 1 shared
Ohta, M.
1 / 1 shared
Numata, T.
1 / 1 shared
Asahi, K.
1 / 1 shared
Nanri, Y.
1 / 1 shared
Ichida, K.
1 / 1 shared
Suga, T.
1 / 2 shared
Chart of publication period
2023
2020

Co-Authors (by relevance)

  • Tsuji, S.
  • Nanri, T.
  • Katsube, R.
  • Yasuda, H.
  • Nishiguchi, A.
  • Nonomura, M.
  • Nakano, K.
  • Takaki, T.
  • Xue, H.
  • Ohta, K.
  • Ohta, M.
  • Numata, T.
  • Asahi, K.
  • Nanri, Y.
  • Ichida, K.
  • Suga, T.
OrganizationsLocationPeople

article

Reconstruction of dendritic growth by fast tomography and phase field filtering

  • Narumi, T.
  • Nishiguchi, A.
  • Nonomura, M.
  • Yasuda, H.
  • Nakano, K.
  • Takaki, T.
  • Xue, H.
Abstract

<jats:title>Abstract</jats:title><jats:p>Three dimensional models of dendritic structures during solidification are valuable for building physical models, validating simulated results, estimating some properties such as permeability in the mushy, simulating semisolid deformation and so on. Thus, it is of interest to observe microstructure evolution in situ. Time-resolved tomography combined with X-ray diffraction has allowed us to observe the evolution of dendritic structures and to measure crystallographic orientation in situ. Reconstruction still proves to be difficult for some alloy systems because of the tradeoff between time and spatial resolution. This paper demonstrates the reconstruction of dendritic structures for three different alloy systems (Al-10mass%Cu alloy with a diameter of 4 mm, CrMnFeCoNi alloy with 1 mm, and Zn-4mass%Al alloy with 0.7 mm). The observations were performed in a synchrotron radiation facility SPring-8. A filter using a phase field model was introduced to reconstruct the three-dimensional images. Parameters used in the filtering were consistently determined based on the raw reconstruction images. Evaluation of solid-liquid interface area and curvature was significantly improved by the filter. For the Al-Cu alloy, a three-dimensional model containing approximately 300 million voxels was obtained. For the CrMnFeCoNi alloys, the preferred growth direction &lt;100&gt; was confirmed by tomography and X-ray diffraction. For the Zn-Al alloy, the observed 14 growth directions were not simply defined by the crystallographic orientations, although the directions were consistent with the hexagonal symmetry. This study verifies that time resolved tomography, X-ray diffraction and the filter using a phase field model provide three dimensional models for light metal alloys with rather large diameters and 3d transition-metal alloys with rather large X-ray absorption coefficients. The models are expected to be used for further studies.</jats:p>

Topics
  • impedance spectroscopy
  • microstructure
  • phase
  • x-ray diffraction
  • tomography
  • permeability
  • solidification