Applied Thermodynamics: Grain Boundary Segregation

• Autoři: LEJČEK Pavel; ZHENG Lei; HOFMANN Siegfried; ŠOB Mojmír
• Rok publikování: 2014
• Druh: Článek v odborném periodiku
• Časopis / Zdroj: Entropy
• Fakulta / Pracoviště MU: Středoevropský technologický institut
• www: http://www.mdpi.com/1099-4300/16/3/1462
• Doi: http://dx.doi.org/10.3390/e16031462
• Obor: Fyzika pevných látek a magnetismus
• Klíčová slova: APPLIED TENSILE-STRESS; LOW-ALLOY STEEL; INTERFACIAL SEGREGATION; SOLUTE INTERACTION; ALPHA-IRON; PHOSPHORUS; ANISOTROPY; EMBRITTLEMENT; ENTHALPY
• Popis: Chemical composition of interfaces-free surfaces and grain boundaries-is generally described by the Langmuir-McLean segregation isotherm controlled by Gibbs energy of segregation. Various components of the Gibbs energy of segregation, the standard and the excess ones as well as other thermodynamic state functions-enthalpy, entropy and volume-of interfacial segregation are derived and their physical meaning is elucidated. The importance of the thermodynamic state functions of grain boundary segregation, their dependence on volume solid solubility, mutual solute-solute interaction and pressure effect in ferrous alloys is demonstrated

Související projekty

• CEITEC - středoevropský technologický institut