In this research, an alloy with a nanostructure was prepared using a metallurgical technique. To prepare an ideal alloy, three nanoscale powders were used (70 percent Ni, 25 percent Cu, and 5 percent V). The dried alloy was stored under 8 Tons of cold pressing at 80°C for 30 minutes. After that, a surface treatment of the prepared alloys with different laser energies (0, 200, 260, 300) mJ was carried out with a pulse time (10 seconds) at a distance of (100 cm). and hardness (Rockwell method) is studied. By immersing samples in a solution (3.5 percent NaCl) for different periods (3, 5, 7, 9, 11) days, the effect of laser surface treatment on the corrosion resistance of the alloy was investigated. Results show that porosity, water absorption ratio decreases after laser surface treatment with rising hardness values. Additionally, the wear resistance decreases as laser energy increases. Atomic force microscope images show that grain sizes increase as laser energy increases, and by increasing the laser energy, the surface of the nanoparticles is more homogeneous. Easy architecture and high nanostructure alloy consistency play a key role in improving the mechanical and physical properties.
This research aimed to prepare (Ni-Al) alloys by powder technology method because of it is technological and commercial important. Nickel and Copper powders were tacking then there powders mixed and blended together with percent (Ni-30% Cu), Vanadium powder added to matrix alloy powder with percent (0,1,2,3)% respectively then these powders mixed to obtain homogeneous powder, then the powders compacted isostatic cold pressure at (8ton). The sintering process done at (900° C) for one hour under argon gas.
The X-ray diffractions test indicated that all alloys have Face center Cubic (F.C.C), And D alloy has best properties which include increase of phases intensity and decrease of grain size according to Debye-Scherrer equation.
The Atomic Force Microscope (AFM) also shows better properties with increase vanadium concentration. Where increased softness of surface, homogeneity surface and decrease in grain size with increase Vanadium concentration.
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