Search for dissertations about: "grain boundaries"
Showing result 21 - 25 of 199 swedish dissertations containing the words grain boundaries.
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21. Deformation and Fatigue Behaviour of Porous and Dense Austenitic Stainless Steel
Abstract : PM stainless steels are increasing in use and are expected to do so in the future. A lot of work has been carried out concerning production and sintering of stainless steel powders and on the resulting corrosion behaviour. The deformation behaviour of these materials is less studied. READ MORE
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22. Sub-grain structure in additive manufactured stainless steel 316L
Abstract : The thesis focuses on exploring the sub-grain structure in stainless steel 316L prepared by additive manufacturing (AM). Two powder-bed based AM methods are involved: selective laser melting (SLM) and electron beam melting (EBM). READ MORE
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23. Grain Boundary Structure of YBa2Cu3O7-δ High Tc Superconductors
Abstract : The microstructures of YBa2Cu3O7-.delta. (YBCO) high Tc superconducting materials have been studied using analytical electron microscopy. The effects of processing parameters on the interfacial microstructures have been investigated in both bulk materials and thin films. READ MORE
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24. Dynamics of high-angle grain boundary YBCO Josephson junctions
Abstract : This thesis describes experimental investigations of properties of high-angle YBa2Cu3O7−δ(YBCO)bicrystal Josephson junctions and SQUIDs fabricated on SrTiO3-substrates. The main focus of theinvestigation has been on the effects of the predominant d-wave symmetry of the superconductingwavefunction in YBCO on transport properties and dynamics. READ MORE
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25. Thermal Stability of Electrodeposited Nanocrystalline Ni- and Co-Based Materials
Abstract : The attractive properties associated with nanocrystalline materials are to a large extent a result of their high intercrystalline volume fraction. However, the intrinsic instability of the nanostructured state may compromise the gain in properties by the occurrence of grain growth during exposure at elevated temperatures. READ MORE