The microstructure and mechanical properties of 7075 wrought aluminum alloy produced by strain induced melt activation (SIMA) route were investigated.Also liquid volume fraction measurement was studied by three procedures. Remelting process was carried out in the range of 560 to 610 °C for 20 min holding. The microstructure in the semi-solid state consists of fine spherical solid grains surroun...

Magnesium alloys have great potential for developing orthopedic implants due to their biodegradability and mechanical properties, but the rapid corrosion rate of the currently-available alloys limits their clinical applications. To increase the corrosion resistance of the substrate, a protective ceramic coating is constructed by a micro-arc oxidation (MAO) process on ZK60 magnesium alloy. The p...

M ODERN dental practice makes wide use of precious metal alloys in wire form as partial denture clasps and as orthodontic appliances. When used in such applications, these alloys are subject only to bend loading and never to pure tensile loading. For this reason, there has long been a feeling within the dental profession that the tensile test for wires was somewhat inappropriate and might be re...

morphology of surface oxide film formed during pouring of molten magnesium alloy has been investigated. due to surface turbulence during casting, the oxide film necessarily makes folded cause in a dry surface to dry surface mode creating a double oxide film with the volume of air that can be encapsulated between folds of the film and this led to make gas bubbles or shrinkage cavities form. thes...

The thermodynamic properties of calcium–magnesium alloys were determined by electromotive force (emf) measurements using a Ca(in Bi)|CaF2|Ca(in Mg) cell over the temperature range 713–1048 K. The activity and partial molar Gibbs free energy of calcium in magnesium were calculated for nine Ca–Mg alloys, calcium mole fractions varying from xCa = 0.01 to 0.80. Thermodynamic properties of magnesium...

Magnesium (Mg) alloys possess the lowest density among structural materials, and their application in automotive aircraft industries might enhance fuel efficiency. The mechanical properties can be improved by addition of alloying elements. However, since Mg its are very susceptible to corrosion degradation, it is important study effect these elements on alloys’ behavior. In this study, 1 wt% ca...