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The effect of the heat treatment and LSP on the microstructures and properties of EBWed Ti-6.5Al-1Mo-1V-2Zr joint were investigated. The characteristic of microstructures, micro-hardness, tensile properties and fracture morphology of specimens were analyzed. The results show that the microstructure of original EBWed specimen contains columnar grains in the edge and equiaxed grains in the center of...
Active screen plasma nitriding (ASPN), a novel surface modification process, has been widely applied to improve various surface properties of austenitic stainless steels, such as wear resistance, electrical conductivity and corrosion resistance. All the improvement of surface properties attributes to the formation of a unique phase under low nitriding temperature, called S-phase. A “sputter – deposit...
Uniform black ceramic coatings were successfully fabricated on the surface of hypoeutectic Al–Si alloy by a plasma electrolytic oxidation (PEO) technology. The coloring additives were NH4VO3 and Na2WO4. The positive voltage was controlled to increase from 0 to 400 V by nine steps. SEM, EDS, XPS and XRD were used to study the characteristics of the black coatings. It is found that the distribution...
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