Author/Authors :
Pagon، نويسنده , , A.M. and Partridge، نويسنده , , J.G. and Hubbard، نويسنده , , P. and Taylor، نويسنده , , M.B. and McCulloch، نويسنده , , D.G. and Doyle، نويسنده , , E.D. and Latham، نويسنده , , K. and Bradby، نويسنده , , J.E. and Borisenko، نويسنده , , K.B. and Li، نويسنده , , G.، نويسنده ,
Abstract :
Energetic deposition of high speed steel (HSS) films has been performed using a filtered cathodic vacuum arc system fitted with a AISI M2 HSS cathode. The mechanical properties and microstructure of the films were investigated as a function of the deposition energy. The stoichiometry and microstructure of the deposited films were different to that of the cathode and a dependence on the deposition energy was found. Films deposited at low deposition energies (< 100 eV) exhibited reduced concentrations of Mo and W and a smaller average crystallite size than the M2 HSS cathode. These films were found to be significantly harder than the M2 HSS cathode, possibly due to their smaller average crystallite size. A HSS film consisting of an amorphous phase with isolated crystals of bcc Fe was produced using high deposition energy and the deposition rate was found to decrease, likely due to sputtering.
Keywords :
high speed steel , Tool steel , Filtered cathodic vacuum arc , Energetic deposition
