The HVEDC Method for the Production of Tungsten Based Alloys

Abstract

The purpose of this study is to investigate HVEDC method for the production of tungsten-based alloys. It is established that the method of high-voltage electro-discharge compaction, in addition to some economic and time benefits, contributes to a minimal change in the microstructure and does not lead to grain growth, thereby
improving mechanical characteristics.


Keywords: powder metallurgy, tungsten heavy alloys, high-voltage electro-discharge consolidation.

References
[1] Grigoryev, E. G. & Rosliakov A.V. (2007). Electro discharge compaction of WC-Co and W-Ni-Fe-Co composite materials. Journal of Materials Processing Technology, Vol. 191, No. 1-3, (August 2007), pp. 182-184


[2] Orru R., Licheri R., Locci A. M., Cincotti A., Cao G. Consolidation/ synthesis of materials by electric current activated/assisted sintering // Materials Science and Engineeringc R. 2009. Vol. № 63. С. 127–287.


[3] Maizza G., Tassinari A. Modelling of micro/macro densification phenomena of Cu powder during capacitor discharge sintering // The proceedings of the COMSOL conference. 2009.


[4] Grigoryev E.G., Olevsky E.A. Thermal processes during high voltage electric discharge consolidation of powder materials // Scripta Materialia. 2012.


[5] Williams D.J., Johnson W. Neck formation and growth in higthvolage discharge forming of metal powders //Powder metallurgy. 1982. Vol. № 25. С. 85–89.