Powder flakes prepared from 50 ~m thick melt spun ribbons of Markomet 1064 (Ni Mo Cr B1 wt%) were shock consolidated in the unannealed and anne~f~~ co~§iti§n. "lhe unannealed flakes (microhardness g33 kg/mm2) are amorphous while flakes annealed at 900°C for 2 hours have an fcc structure with a grain size of 0.3 ~m and microhardness of 800 kg/mm2. The shock consolidated amorphous powder compact ...

Unconstrained metal powders of chromium and nickel, in combination with aluminium, were used the submerged arc welding (SAW) process to simplify weld alloying. refer non-alloyed that are not constrained tubular wire, such as fluxed-cored metal-cored wire. Aluminium powder is control oxygen potential at molten flux–weld pool interface. The results presented here show addition aluminium enhances ...

In this study, Electrical Discharge Machining (EDM) is used to modify the surface of high carbon steel En31 with the help of tool electrode (Copper-Chromium-Nickel) manufactured by powder metallurgy (PM) process. The effect of EDM on surface roughness during surface alloying is studied. Taguchi’s Design of experiment (DOE) and L18 orthogonal array is used to find the best level of input paramet...

The main aim of this research was to find the mechanism for the failure of the CoCrMo porous nano-composite by characterizing microstructural changes and fractured surface after compression test. For this purpose, porous nano-composites were prepared with the addition of bioactive glass nano-powder to Co-base alloy with 22.5% porosity by the combination of space-holder and powder metallurgy tec...