Search for dissertations about: "Particle pinning"

Found 5 swedish dissertations containing the words Particle pinning.

  2. 1. Multiscale modeling of dynamic recrystallization

    Author : Ylva Mellbin; Hållfasthetslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dynamic recrystallization; Crystal plasticity; Texture; Grain size strengthening; Vertex model; Nucleation; Particle pinning; Large deformations; Multiscale modeling; GPGPU;

    Abstract : During thermomechanical processing of metals, changes occur in the microstructure of the material which affect its macroscopic properties. By understanding these transformations in the microstructure, it becomes possible to design the processes in a way which yields the desired properties in the finished product. READ MORE

  4. 2. Nano and Grain-Orientated Ferroelectric Ceramics Produced by SPS

    Author : Jing Liu; Zhijian Shen; Pavol Sajgalik; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; nano microstructure; grain-orientated microstructure; ferroelectric ceramics; Spark Plasma Sintering; Inorganic chemistry; Oorganisk kemi; oorganisk kemi; Inorganic Chemistry;

    Abstract : Nano-powders of BaTiO3, SrTiO3, Ba0.6Sr0.4TiO3, a mixture of the composition (BaTiO3)0.6(SrTiO3)0. READ MORE

  5. 3. Modeling the Microstructural Evolution during Hot Deformation of Microalloyed Steels

    Author : Linda Bäcke; Stefan Jonsson; Eric J. Palmiere; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modeling; austenite; microalloyed steels; hot deformation; microstructure evolution; static recrystallization; dynamic recrystallization; metadynamic recrystallization<; Materials science; Teknisk materialvetenskap;

    Abstract :   This thesis contains the development of a physically-based model describing the microstructural evolution during hot deformation of microalloyed steels. The work is mainly focused on the recrystallization kinetics. During hot rolling, the repeated deformation and recrystallization provides progressively refined recrystallized grains. READ MORE

  6. 4. Complex Phase Behavior in Thermoelectric Mg2Si1-xSnx Alloys and Development of Transient Plane Source Method for Structural Characterization

    Author : Andrey Sizov; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multiphase structure; quality control; inhomogeneity tests; Rietveld refinement; Transient Plane Source method; isotropic and anisotropic materials; defects detection; advance measurements of thermal properties; X-ray diffraction; structural characterization; spark plasma sintering; magnesium silicide-stannide alloys; complex behavior; thermoelectric properties; thermal conductivity vs. probing depth;

    Abstract : The thermoelectric effect was discovered nearly 200 years ago, but it started to be utilized for waste heat recovery only fairly recently. From an economical point of view, such applications requires a cheap and efficient material, which is able to convert heat energy into electricity. READ MORE

  7. 5. Hierarchical Structuring of Mg2Si1-xSnx Alloys for Lower Thermal Conductivity and Thermal Conductivity as Probe for Structural Characterization

    Author : Andrey Sizov; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; structural probing; Rietveld refinement; hot disc; spinodal decomposition; magnesium silicide-stannide; Microstructuring; phase separation; X-ray diffraction; thermal conductivity; thermoelectrics;

    Abstract : The thermoelectric effect was discovered nearly 200 years ago, but it started to be utilized for waste heat recovery fairly recently. From the economical point of view, such application requires a cheap and efficient material, which is able to convert heat energy into electricity. READ MORE