Quantifying Microstructural Evolution in Moving Magma

Microstructural Evolution in OrthotropicElastic Media

We consider the problem of microstructural evolution in binary alloys in two dimensions. The microstructure consists of arbitrarily shaped precipitates embedded in a matrix. Both the precipitates and the matrix are taken to be elastically anisotropic, with different elastic constants. The interfacial energy at the precipitate– matrix interfaces is also taken to be anisotropic. This is an extens...

Microstructural Evolution of X45CrNiW189 Valve Steel During Hot Deformation

The hot compression tests were carried on X45CrNiW189 valve steel (X45) in the temperature range of 1000– 1200 °C and the strain rate range of 0.004 – 0.5 s-1 in order to study the high temperature softening behavior of this steel. For the exact prediction of flow stress, the effective stress-effective strain curves were obtained from experiments under various conditions. On the basis of experi...

Microstructural evolution during film growth

Atomic-scale control and manipulation of the microstructure of polycrystalline thin films during kinetically limited low-temperature deposition, crucial for a broad range of industrial applications, has been a leading goal of materials science during the past decades. Here, we review the present understanding of film growth processes—nucleation, coalescence, competitive grain growth, and recrys...

Investigation of parent magma evolution and origin of chromites in Cheshmeh-Bid, Neyriz, Fars

: Cheshmeh-Bid chromite deposit is located in Nayriz ophiolite, 200 km northeast of Shiraz. The ophiolite sequences in this area are including ultramafic rocks (dunite, harzburgite, and pyroxenite). In this deposit, chromites are located in the mantle-crust transition zone and are enclosed by a dunite cover. Based on chemical studies of the major elements, chromite is depleted of Al and Ti elem...

Processes of Magma Evolution and Magmatic Suites