About the Surface Hardening of Tool Steels by Electrical Discharge Treatment in Electrolyte
In this study are given some results about the influence of electrical discharge treatment in electrolyte on the microstructure of high speed steel HS 6-5-2. The metallic surface after electrical discharge treatment in electrolyte has a different structure in comparison with the metal matrix, which determines different properties. It is observed remarkable increasing of hardness, strength and corrosion resistance related to the nonequilibrium phase transformations and the obtained finecrystalline microstructure.
Lilyana Kolakieva and Roumen Kakanakov
D. Krastev and B. Yordanov, "About the Surface Hardening of Tool Steels by Electrical Discharge Treatment in Electrolyte", Solid State Phenomena, Vol. 159, pp. 137-140, 2010