Sökning: "complexions"

Hittade 2 avhandlingar innehållade ordet complexions.

1. 1. Atomic-scale investigation of interfacial structures in WC-Co at finite temperatures

   Författare :Erik Fransson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; complexions; phase diagrams; interfaces; force constants; cluster expansions; atomic-scale modeling; free energies; cemented carbides; WC--Co;

   Sammanfattning : WC-Co cemented carbides combine superb hardness with high toughness making them ideal for usage in high-speed machining of steels and in wear resistance tools. These excellent mechanical properties are to a large extent dependent on the microstructure and thus the interfacial properties of the material. LÄS MER

3. 2. Temperature dependent atomic-scale modeling of interfaces in cemented carbides

   Författare :Martin Gren; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hardmetals; analytical bond order potential; wetting; WC-Co; density functional theory; free energies; interfaces; complexions; cemented carbides; phase diagram;

   Sammanfattning : Material properties can now be calculated directly from first principles using density functional theory (DFT) which has a great predictive power and can, in cases that are difficult to approach experimentally, provide crucial insights on the atomic and electronic level. Such cases include the thermodynamics of interfaces and surfaces which are crucial factors for the structure and macroscopic properties of many materials, where cemented carbides are one example. LÄS MER