Aluminum alloys containing transition metal alloying elements have attracted interest from researchers. The effect of Cr additions 0.25 and 0.50% on the thermal profile, microstructure, hardness, linear reciprocating sliding wear response as-cast hypoeutectic Al–Cu with 2.5, 3.5, 4.5% Cu (wt.%) was investigated. binary ternary Al–Cu–Cr were directionally solidified under upward non-steady state...

The Cu/Zn superoxide dismutase (SOD1) is one of the key enzymes that protect cells against oxidative stress. It catalyzes the dismutation of superoxide radicals (O2-) to oxygen and hydrogen peroxide. To study the transcriptional regulation of the human Cu/Zn SOD gene, we began by analyzing the 1.5-kb upstream region of the gene (see Kim et al., 1994). The element from nucleotides (nt) -116 to -...

Abstract Poor interfacial structure and severe agglomerations of carbon fiber (CF) are significant problems that face reinforced aluminium (CF/Al) composites. Thus, CF was surface modified with nano copper particles (Cu) to overcome these problems. Two groups CF/Al composites (uncoated coated) at different weight percentages reinforcement (0, 5, 10, 15, 20) were fabricated using the planetary b...

One of the most important routes for obtaining Al-Bi-x monotectic alloys is directional solidification. The control thermal solidification parameters under transient heat flow conditions can provide an optimized distribution Bismuth (Bi) soft minority phase embedded into Al-rich matrix. In present contribution, Al-Bi, Al-Bi-Zn, and Al-Bi-Cu were manufactured through this route with their micros...

Ag-28.1 wt. % Cu eutectic alloy solidifies in the form of eutectic dendrite at undercooling above 76 K. The remelting and ripening of the original lamellar eutectics result in the formation of the anomalous eutectics in the final microstructure. The addition of the third element Sb (0.5 and 1 wt. %) does not change the growth mode, but enlarges the volume fraction of anomalous eutectics because...

one of the most important applications of carbon nanotubes (cnts) is as reinforcement of metal matrix composites, because of their excellent mechanical properties. in this study, al-tio2-multi walled carbon nanotubes (mwcnts) nanocomposite is fabricated using isostatic pressing followed by hot extrusion. mechanical alloying is used to mix powders of aluminium, tio2 and mwcnts. tio2 with the amo...