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Kinetics of crystallization of amorphous Mg80Cu10Y10

Authors
  • Nitsche, Heiko1
  • Stanislowski, Michael2
  • Sommer, Ferdinand1
  • Mittemeijer, Eric Jan1, 2
  • 1 Max Planck Institute for Metals Research, Germany , (Germany)
  • 2 Institute of Physical Metallurgy, University of Stuttgart, Germany , (Germany)
Type
Published Article
Journal
International Journal of Materials Research
Publisher
De Gruyter
Publication Date
Feb 02, 2022
Volume
96
Issue
12
Pages
1341–1350
Identifiers
DOI: 10.3139/ijmr-2005-0234
Source
De Gruyter
Keywords
Disciplines
  • Articles Basic
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Abstract

The crystallization kinetics of an amorphous magnesium-rich Mg80Cu10Y10 alloy has been determined by isothermal and isochronal differential scanning calorimetry combined with ex-situ X-ray diffraction for phase analysis. Microstructure analysis has been performed by means of transmission electron microscopy. Complete crystallization of Mg80Cu10Y10 has been found to take place in three steps. Independent of the type of annealing, during the first crystallization process at around 430 K particles of several phases are formed with an equiaxed morphology. Kinetic analysis applying a new analytical model demonstrated that Avrami nucleation and volume-diffusion-controlled growth are the operating nucleation and growth modes. The effect of yttrium on the transformation kinetics has been discussed.

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