Sökning: "solid solution strengthening"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden solid solution strengthening.
Sammanfattning : The understanding of the strengthening mechanisms is crucialboth in the development of new materials with improvedmechanical properties and in the development of better materialmodels in the simulation of industrial processes. The aim ofthis work has been to study different strengthening mechanismsfrom a fundamental point of view that enables the developmentof a general model for the flow stress. LÄS MER
Sammanfattning : .... LÄS MER
Sammanfattning : Materials to be used in thermal power plants have to resist creep deformation for time periods up to 30 years. The role of alloying elements for creep strength of 9-12% Cr steels is analysed. The creep strength in these steels relies on minor additions of alloying elements. LÄS MER
Sammanfattning : With rapid economic developments and rising living standards, the demand for electricity all over the world is greatly increased. Due to high fuel costs, the steam boilers with higher steam temperature and pressure are needed to decrease the cost of power generation throughout the world extensively. LÄS MER
5. The relation between microstructure and mechanical properties of cobalt- and nickel-rich Co-Ti-C and Ni-Ti-C alloys
Sammanfattning : Age-hardening processes up to l000°c which might be important in the binder phase of the Co-Ti-C and Ni-Ti-Chard metal systems have been studied mainly by high voltage electron microscopy, (HVEM), optical microscopy (OM) and scanning electron microscopy (SEM) as well as by micro-and macrohardness measurements and tensile testing at room and elevated temperatures (500°-800°). In addition,the allotropic transformation of cobalt has been followed by X-ray diffraction in order to permit a more complete interpretation of the changes in microstructure reflected in the mechanical testing. LÄS MER