The equiatomic CoCrFeMnNi alloy and the quaternary alloys with no addition of one element were fabricated, roles alloying elements in corrosion resistance clarified. In 1 M H2SO4, passivity was mainly due to Cr. Co Fe additions also contributed decrease current density. While Ni found suppress active dissolution, Mn increased dissolution rate. without indicated superior pitting 0.1 NaCl. To imp...

The thermally activated formation of nanoscale CoPt alloys was investigated, after deposition of self-assembled Co nanoparticles on textured Pt(111) and epitaxial Pt(100) films on MgO(100) and SrTiO(3)(100) substrates, respectively. For this purpose, metallic Co nanoparticles (diameter 7 nm) were prepared with a spacing of 100 nm by deposition of precursor-loaded reverse micelles, subsequent pl...

Iron alloyed with Ni and Si has been suggested to be a major component of the Earth’s inner core. High-pressure results on the combined alloying effects of Ni and Si on seismic parameters of iron are thus essential for establishing satisfactory geophysical and geochemical models of the region. Here we have investigated the compressional (VP) and shear (Vs) wave velocity-density (ρ) relations, P...

V is the only element in the periodic table that forms a complete solid solution with Cr and thus is particularly important in alloying strategy to ductilize Cr. This study combines first-principles density functional theory calculations and experiments to investigate the phase stability and elastic properties of Cr-V binary alloys. The cluster expansion study reveals the formation of various ...

Micro-alloying steels allow higher strength to be achieved, with lower carbon contents, without a loss in toughness, weldability or formability through the generation of a fine ferrite grain size with additional strengthening being provided by the fine scale precipitation of complex carbo-nitride particles. Niobium is reported to be the most efficient micro-alloying element to achieve refinemen...

in this research a cu-zn-al alloy is produced by melting the raw materials in an electric resistance furnace and then pouring it into a steel mould. the optimum way to achieve the final analysis in the hypo-eutectoid range is determined and the influence of the alloying element, ti on the grain size and the shape memory properties of the samples are investigated. solution treatment (done at 850...

Binary Al-5M alloys, containing 5 at.% alloying element (M: Cr, Si, Nb, Mo, and V), have been produced by high-energy ball milling subsequent spark plasma sintering. X-ray diffraction analysis indicated the solid solubility of elements to be several orders magnitude higher than that predicted phase diagram. The elastic modulus hardness analyzed using nanoindentation, were significantly commerci...