Search for dissertations about: "Pavel A. Korzhavyi"

Showing result 1 - 5 of 12 swedish dissertations containing the words Pavel A. Korzhavyi.

2. 1. Finite temperature properties of elements and alloy phases from first principles

   Author : Hossein Ehteshami; Pavel A. Korzhavyi; Andrei V. Ruban; Tilmann Hickel; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Materials Science and Engineering; Teknisk materialvetenskap; Physics; Fysik;

   Abstract : First principles calculations are usually concerned with properties calculated at temperature 0 K. However, the industrially important materials are functioning at finite temperatures. READ MORE

4. 2. Creep modeling and first-principles investigation of high-temperature alloys

   Author : Jing Zhang; Pavel A. Korzhavyi; Rolf Sandström; Gunther Eggeler; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Austenitic stainless steels; Nickel-based superalloys; Fundamental creep models; EMTO-CPA method; Quasi-harmonic Debye model; Thermo-mechanical properties; High temperatures.; Teknisk materialvetenskap; Materials Science and Engineering;

   Abstract : Stainless steels and nickel-based superalloys are materials that have been widely used to manufacture components servicing at high temperatures. Creep strength is one of the most important properties in such conditions. READ MORE

5. 3. Fundamental models and testing of creep in copper

   Author : Fangfei Sui; Pavel A. Korzhavyi; Rolf Sandström; Alan Cocks; KTH; []
   Keywords : Copper; Creep tests; Multiaxial stress state; Finite element method; Basic modelling; Tertiary creep; Precipitation hardening;

   Abstract : Many sustainable technologies for energy production, for example, generation IV nuclear system, demand the use of materials operating at elevated temperatures for long duration of up to 60 years. Requirements that are even more stringent are found for creep exposed copper canisters for disposal of spent nuclear waste. READ MORE

6. 4. Structural and magnetic disorder in crystalline materials : a first principles study

   Author : Davide Gambino; Björn Alling; Pavel Korzhavyi; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Disorder in crystalline materials can take different forms and originate from different sources. In particular, temperature introduces disorder in any kind of material. READ MORE

7. 5. Thermodynamic and kinetic properties of Fe-Cr and TiC-ZrC alloys from Density Functional Theory

   Author : Vsevolod Razumovskiy; Pavel Korzhavyi; Andrei Ruban; Malin Selleby; Sergei Dudarev; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; ab initio; first principles; point defects; vacancy clusters; alloys; steels; iron; carbides; diffusion; phase diagram; density functional theory; elastic constants; elastic properties; thermodynamic modelling;

   Abstract : The complete and accurate thermodynamic and kinetic description of any systemis crucialfor understanding and predicting its properties. A particular interest is in systemsthat are used for some practical applications and have to be constantly improved usingmodification of their composition and structure. READ MORE