Search for dissertations about: "Dislocation and diffusion creep"

Found 3 swedish dissertations containing the words Dislocation and diffusion creep.

  2. 1. Rheological response to tectonic and volcanic deformation in Iceland

    Author : Md. Tariqul Islam; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Iceland; Tectono-volcanic deformation; Lithostatic loading; Geodynamic finite element model; Temperature- and stress-dependent rheology; Wet and dry rheology; Dislocation and diffusion creep;

    Abstract : .... 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. Theoretical studies of boron and transition-metal carbonitride additions in steels

    Author : Dan Fors; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electronic structure; Dislocation network; Interfaces; Peierls-Nabarro model; Density functional theory; Steels; Coarsening; Diffusion; Misfit; Precipitates;

    Abstract : Martensitic 9-12%Cr steel alloys are today widely used as critical components in fossil-fired steam power plants with steam temperatures up to 600°C, where sound oxidation resistance and excellent creep strength are required. Their strength and long-term creep resistance are closely connected to the presence and stability of Cr-rich M23C6 (M = Cr, Fe) carbides and densely distributed MX precipitates (M = transition metal, X = C or N), which effectively act as obstacles for dislocation migration. READ MORE