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Thermite welding of Cu–Nb microcomposite wires

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Veröffentlicht/Copyright: 28. September 2017
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 108 Heft 10

Abstract

Thermite welding of Cu–Nb microcomposite wires was investigated. Suitable compositions of thermite material and slag were determined from the equation of the exothermic combustion synthesis reaction. The phase compositions of the thermite mixture and slag determined by X-ray diffraction analysis correspond to those assessed from the equation. According to non-destructive radiographic testing, the joint structure does not have welding defects. Microstructural examination of the joint cross-section with scanning electron microscopy showed that the Cu–Nb wire retained its shape and microstructure and only a thin surface layer of wire was melted during welding. The difference in electrical resistances of the conductor and welded joint was below 20 %. The thermite joint can withstand a maximum load equal to 62.5 % of the load-bearing capacity of microcomposite conductor.

Keywords: Cu–Nb microcomposite wire; Welded joint; Thermite welding; Pulsed magnet
*Correspondence address, Dr. Nikolaj Višniakov, Faculty of Mechanics, Vilnius Gediminas Technical University, Basanavičiaus str. 28, 03224 Vilnius, Lithuania, Tel.: +37052745053, Fax: +37052744740, E-mail:

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Received: 2016-12-08
Accepted: 2017-06-16
Published Online: 2017-09-28
Published in Print: 2017-10-16

© 2017, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Molecular dynamics simulation of hydrogen atom diffusion in crystal lattice of fcc metals
  5. Rapid nickel diffusion in cold-worked type 316 austenitic steel at 360–500 °C
  6. Electron backscatter diffraction-analysis of deformed micro-milled commercially pure-titanium specimens at different strain values
  7. Phase equilibria in the Zr–Si–B ternary system (Zr–Si–ZrB2 region) at 1 173 K
  8. Density and solidification shrinkage of hypereutectic Al–Si alloys
  9. Effects of magnetic energy on microstructural evolution during peritectic solidification in ferromagnetic alloy investigated by phase-field simulation
  10. Improved quality of flash-lamp-crystallized polycrystalline silicon films by using low defect density Cat-CVD a-Si films
  11. Thermite welding of Cu–Nb microcomposite wires
  12. Modification of microstructure and mechanical properties of Al–Zn–Mg/3 wt.% Al2O3 composite through semi-solid thermomechanical processing using variable loads
  13. Magnesium nanocomposites reinforced with a high volume fraction of SiC particulates
  14. Porosity, microstructure and mechanical behavior of NiO–YSZ composite anode for solid oxide fuel cells
  15. DGM News
  16. DGM News
https://doi.org/10.3139/146.111554
Schlagwörter für diesen Artikel
Cu–Nb microcomposite wire; Welded joint; Thermite welding; Pulsed magnet

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Molecular dynamics simulation of hydrogen atom diffusion in crystal lattice of fcc metals
  5. Rapid nickel diffusion in cold-worked type 316 austenitic steel at 360–500 °C
  6. Electron backscatter diffraction-analysis of deformed micro-milled commercially pure-titanium specimens at different strain values
  7. Phase equilibria in the Zr–Si–B ternary system (Zr–Si–ZrB2 region) at 1 173 K
  8. Density and solidification shrinkage of hypereutectic Al–Si alloys
  9. Effects of magnetic energy on microstructural evolution during peritectic solidification in ferromagnetic alloy investigated by phase-field simulation
  10. Improved quality of flash-lamp-crystallized polycrystalline silicon films by using low defect density Cat-CVD a-Si films
  11. Thermite welding of Cu–Nb microcomposite wires
  12. Modification of microstructure and mechanical properties of Al–Zn–Mg/3 wt.% Al2O3 composite through semi-solid thermomechanical processing using variable loads
  13. Magnesium nanocomposites reinforced with a high volume fraction of SiC particulates
  14. Porosity, microstructure and mechanical behavior of NiO–YSZ composite anode for solid oxide fuel cells
  15. DGM News
  16. DGM News
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