Modification of cast alloys nanostructured material

THERMAL FATIGUE RESISTANCES OF 356 AND 413 CAST Al ALLOYS

Abstract: Thermal fatigue is a stochastic process often showing considerable scatter even in controlled environments. Due to complexity of thermal fatigue, there is no a complete analytical solution for predicting the effect of this property on the life of various components, subjected to severe thermal fluctuations. Among these components, one can mention car cylinder, cylinder head and pi...

Microstructure of nanostructured amorphous Si-Au-alloys

Obstacles to applications of nanostructured thermoelectric alloys

A major theme in thermoelectric research is based on controlling the formation of nanostructures that occur naturally in bulk intermetallic alloys through various types of thermodynamic phase transformation processes (He et al., 2013). The question of how such nanostructures form and why they lead to a high thermoelectric figure of merit (zT) are scientifically interesting and worthy of attenti...

Accelerated sintering in phase-separating nanostructured alloys

Sintering of powders is a common means of producing bulk materials when melt casting is impossible or does not achieve a desired microstructure, and has long been pursued for nanocrystalline materials in particular. Acceleration of sintering is desirable to lower processing temperatures and times, and thus to limit undesirable microstructure evolution. Here we show that markedly enhanced sinter...

Optimization of the chemical milling of investment cast titanium alloys

Investment casting is a popular casting technique for manufacturing of several titanium alloy components dedicated to different industrial applications, as aerospace and automotive. This manufacturing process could be an economic net-shape technology, since the investment casting allows obtaining complex shapes, accurate geometries and reduced thicknesses. However, the reactions between titaniu...