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 (2/2 displayed)

  • 2023Mapping strain across Co80Ta7B13 / Co62Ta6B32 glassy interfacescitations
  • 2021Deformation-Mode-Sensitive Behavior of CuZr-Based Bulk Metallic Glasses Under Dynamic Loading2citations

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Chart of shared publication
Keckes, Julius
1 / 4 shared
Jansen, H. C.
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Evertz, S.
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Eckert, Jürgen
2 / 1035 shared
Gammer, C.
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Zalesak, Jakub
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Hans, Marcus
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Sarac, Baran
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Spieckermann, Florian
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Soprunyuk, Viktor
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Gammer, Christoph
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Sifferlinger, Nikolaus August
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Rezvan, Amir
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2023
2021

Co-Authors (by relevance)

  • Keckes, Julius
  • Jansen, H. C.
  • Evertz, S.
  • Eckert, Jürgen
  • Gammer, C.
  • Zalesak, Jakub
  • Hans, Marcus
  • Sarac, Baran
  • Spieckermann, Florian
  • Soprunyuk, Viktor
  • Gammer, Christoph
  • Sifferlinger, Nikolaus August
  • Rezvan, Amir
OrganizationsLocationPeople

article

Deformation-Mode-Sensitive Behavior of CuZr-Based Bulk Metallic Glasses Under Dynamic Loading

  • Sarac, Baran
  • Eckert, Jürgen
  • Spieckermann, Florian
  • Soprunyuk, Viktor
  • Gammer, Christoph
  • Sheng, Huaping
  • Sifferlinger, Nikolaus August
  • Rezvan, Amir
Abstract

<p>The viscoelastic behavior of four different bulk metallic glass (BMG) systems, i.e., Cu<sub>46</sub>Zr<sub>46</sub>Al<sub>8</sub>, Cu<sub>44</sub>Zr<sub>44</sub>Al<sub>8</sub>Co<sub>4</sub>, Cu<sub>44</sub>Zr<sub>44</sub>Al<sub>8</sub>Hf<sub>4</sub>, and Cu<sub>44</sub>Zr<sub>44</sub>Al<sub>8</sub>Co<sub>2</sub>Hf<sub>2</sub>, is investigated concerning its deformation-mode dependence via dynamic mechanical analysis (DMA) in 3-point bending (TPB), tension, and torsion modes. At temperatures below the glass transition, the considered BMGs deform primarily elastic, and the mechanical response is independent of the testing frequency, whereas, in the glass transition region, the viscoelastic component dominates. Crystallization decreases the viscoelastic contribution, whereas plastic deformation leads to an increase in atomic mobility for all three deformation modes. Compared to tension and torsion, TPB is found to be more sensitive to dynamic mechanical stress. TPB generates a complex stress state in the matrix and can thus introduce substantial variations in loss modulus. Structural analyses carried out by transmission electron microscopy and X-ray diffraction confirmed the amorphous nature of the base composition and structural changes when heated to the intermediate peak temperature observed at 743 K for the TPB mode. Compared to Cu<sub>46</sub>Zr<sub>46</sub>Al<sub>8</sub>, 4 at. pct Co addition in the Cu<sub>46−x</sub>Zr<sub>46−x</sub>Al<sub>8</sub>Co<sub>x</sub> amorphous alloy leads to a glass showing relatively higher thermomechanical stability around its glass transition. This study provides evidence for the enhancement of the mechanical properties of CuZr-based BMGs at elevated temperatures by microalloying.</p>

Topics
  • impedance spectroscopy
  • polymer
  • amorphous
  • mobility
  • x-ray diffraction
  • glass
  • glass
  • transmission electron microscopy
  • crystallization
  • dynamic mechanical analysis