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Journal of Materials Engineering and Performance

, Volume 27, Issue 4, pp 1570–1579 | Cite as

Experimental Investigation of Microstructure and Phase Transitions in Ag-Cu-Zn Brazing Alloys

  • Stevan P. Dimitrijević
  • Dragan Manasijević
  • Željko Kamberović
  • Silvana B. Dimitrijević
  • Miodrag Mitrić
  • Milan Gorgievski
  • Srba Mladenović
Article

Abstract

Microstructure and phase transitions of selected brazing alloys from the Ag-Cu-Zn ternary system were investigated. Four ternary alloys with silver content in the compositional range from 25 to 60 wt.% were studied using x-ray diffraction (XRD) and scanning electron microscopy coupled with the energy-dispersive spectroscopy (SEM–EDS). Phase transitions of the investigated alloys were measured using differential scanning calorimetry (DSC). Experimentally obtained results were compared with the results of a thermodynamic calculation of the phase equilibria according to the CALPHAD method. The experiments confirmed the optimized thermodynamic parameters for the calculations from the thermodynamic assessment in literature. Phase compositions, liquidus and solidus temperatures were confirmed by the EDS and DTA methods. Additionally, the calculated solidification paths and predicted phase transformations were in agreement with the SEM images.

Keywords

advanced characterization annealing casting and solidification electron microscopy silver brazing alloys x-ray 

Notes

Acknowledgments

This work has been supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia, Projects Nos. TR 34033 and ON 172037. Calculations were performed by Pandat 8.1 software.

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Copyright information

© ASM International 2018

Authors and Affiliations

  • Stevan P. Dimitrijević
    • 1
  • Dragan Manasijević
    • 2
  • Željko Kamberović
    • 3
  • Silvana B. Dimitrijević
    • 4
  • Miodrag Mitrić
    • 5
  • Milan Gorgievski
    • 2
  • Srba Mladenović
    • 2
  1. 1.Innovation Centre of TMF BelgradeUniversity of BelgradeBelgradeSerbia
  2. 2.Technical Faculty in BorUniversity of BelgradeBorSerbia
  3. 3.TMF BelgradeUniversity of BelgradeBelgradeSerbia
  4. 4.Mining and Metallurgy Institute BorBorSerbia
  5. 5.Vinča Institute of Nuclear SciencesUniversity of BelgradeBelgradeSerbia

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