منابع مشابه
Anisotropic kinetics of solid phase transition from first principles: alpha-omega phase transformation of Zr.
Structural inhomogeneity is ubiquitous in solid crystals and plays critical roles in phase nucleation and propagation. Here, we develop a heterogeneous solid-solid phase transition theory for predicting the prevailing heterophase junctions, the metastable states governing microstructure evolution in solids. Using this theory and first-principles pathway sampling simulation, we determine two typ...
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Urban centres in the world are undergoing facets of changes, these changes are evident in developing countries and more divergent because urban transformation in developing countries is often accompanied challenges which include traffic congestion, overcrowding, pollution and continuous land use succession. This phenomenon is not different with the central area of Minna, Nigeria. Since 2008 the...
متن کاملPHASE TRANSFORMATION DURING WEAR OF AISI STAINLESS STEEL 316
Abstract: Austenitic stainless steels exhibit a low hardness and weak tribological properties. The wear behaviour of austenitic stainless steel AISI 316 was evaluated through the pin on disc tribological method. For investigating the effect of wear on the changes in microstructure and resistance to wear, optical microscopy and scanning electron microscope were used. The hardness of the worn...
متن کاملThe Bainitic Phase Transformation in Aluminium Containing Ductile Irons after Short Time of Austempering
The influence of aluminium on the microstructure of austempered ductile cast iron (ADI) has been studied. A number of irons of different compositions have been made by green sand casting and gravity die casting of appropriate design to provide the experimental materials. Austenitising was carried out at different temperatures and holding times for a variety of experimental irons to achieve suff...
متن کاملInvestigating the effects of Magnesia addition on properties, phase transformation and microstructure of gelcasted Zirconia bodies
Magnesia Partially Stabilized Zirconia (Mg-PSZ) is the best material for casting nozzles used in steelmaking industry due to high melting point, high mechanical strength, high thermal shock resistance, high toughness, chemical stability and neutrality, which these nozzles should be fabricated using cold isostatic pressing (CIP) method, however wet processing methods such as gelcasting can lead ...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1977
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1977788