Peculiarities of microstructure of reactive diffusion zone in Al-Co system

Authors

  • G.M. Ibrayeva Institute of Metallurgy and Ore Beneficiation
  • B.M. Sukurov Institute of Metallurgy and Ore Beneficiation

DOI:

https://doi.org/10.51301/vest.su.2021.i2.19

Keywords:

intermetallics, diffusion, joining, microstructure, interfaces, scanning, electron microscopy

Abstract

Microstructure and element composition of the sample having the multilayer reactive diffusion zone (RDZ) in Al-Co system obtained by means of contact smelting at 1375 °C for 1 hour were studied in cross-section by means of scanning electron microscopy and electron probe microanalysis (SEM-EPMA). In the multilayer RDZ the following intermetallic compounds CoAl3, Co2Al5, CoAl, β' + (αСо), as well as solid solution of CoAl in (αСо) were identified using the spot energy-dispersion analysis (EDS). Using the methods of linear EDS and wave-dispersion (WDS) analyses the profiles of element concentrations were obtained. These concentration profiles indicate that CoAl3, Co2Al5, CoAl and β' + (αСо) are able to form solid solutions in each other. Microstructural peculiarities of RDZ forming in the layers CoAl3, Co2Al5, CoAl and β' + (αСо) can simulate the actual structural pattern of Al-Co alloys (as-cast).

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Published

2021-04-30

How to Cite

Ibrayeva, G. ., & Sukurov, B. (2021). Peculiarities of microstructure of reactive diffusion zone in Al-Co system. Engineering Journal of Satbayev University, 143(2), 146–151. https://doi.org/10.51301/vest.su.2021.i2.19

Issue

Section

Chemistry and Metallurgy