This paper studies the influence of different substrate materials on phase composition, microstructure, microhardness, and wear resistance Ni-Cr-B-Si-C-Ti-Al plasma spray coatings. Two types metals were studied – AISI 1045 steel Pig-P3 Si grey cast iron. It has been found that in as-coated condition surface layers have a composition γ-Ni, Cr23C6, γ-TiAl, TiN, α-Ti(N, O) substrate, α-Ti, Ni3B, C...

Al assisted alloying of carbon steel in Submerged Arc Welding (SAW) by Al-Cr-Ti-Cu unconstrained metal powders is applied. A base case without powder additions compared to two addition schedules, Al-Cu-Ti and Al-Cu-Ti-Cr. used as a deoxidiser element control the oxygen partial pressure at weld pool–molten flux interface ensure that most Ti Cr transferred into pool ppm O controlled within accept...

As a part of the Broader Approach activities from 2007 to 2016, research and development on blanket related materials and tritium technology have been initiated toward DEMO by the EU and Japan. According to the common interest of EU and Japan toward DEMO, R&D on reduced activation ferritic martensitic (RAFM) steels as a DEMO blanket structural material, silicon carbide composites (SiCf/SiC), ad...

AIM To determine how instrument design affects the fatigue life of two nickel-titanium (Ni-Ti) rotary systems (Mtwo and ProTaper) under cyclic fatigue stress in simulated root canals. METHODOLOGY Cyclic fatigue testing of instruments was performed in stainless steel artificial canals with radii of curvature of 2 or 5 mm and an angle of curvature of 60 degrees . A total of 260 instruments were...

Recently, machining has been exploited as a means for producing ultra-fine grained (UFG) and nanocrystalline microstructures for various metal materials, such as aluminum alloys, copper, stainless steel, titanium and nickel-based super alloys, etc. However, no predictive, analytical or numerical work has ever been presented to quantitatively predict the change of grain sizes during machining. I...