Search for dissertations about: "segregation band"

Showing result 1 - 5 of 7 swedish dissertations containing the words segregation band.

  1. 1. On the microstructure and mechanical properties of Mg-Al alloys

    University dissertation from Jönköping : Jönköping

    Author : Haiping Cao; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mg-AI; microstructure; mechanical properties; divorced degree; modeling; mould constraint; segregation band; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : The microstructural features and the mechanical properties of binary Mg-Al alloys have been investigated by using a gradient solidification technique. Homogeneous and nearly defect-free samples were produced under well controlled cooling conditions, through which the microstructural characteristics as well as the relationships between microstructure and mechanical properties in Mg-AI alloys were precisely defined. READ MORE

  2. 2. Characteristics of cast magnesium alloys : microstructures, defects and mechanical properties

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Haiping Cao; Anders Jarfors; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mg alloys; microstructure; mechanical properties; defects; modelling; segregation bands; hot tear; mould constraint; semi-solid casting.; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : Magnesium is the lightest of all structural metals. As such, and combined  with good mechanical and physical properties, it forms the basis for commercial alloys that have found successful use in a wide variety of applications. READ MORE

  3. 3. Environmentally Friendly Plasticizers for PVC Improved Material Properties and Long-term Performance Through Plasticizer Design

    University dissertation from Stockholm : KTH

    Author : Annika Lindström; Minna Hakkaraninen; Anders Södergård; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; poly butylene adipate ; poly vinyl chloride ; plasticizers; miscibility; mechanical properties; surface segregation; migration; degradation products; NATURAL SCIENCES Chemistry Organic chemistry Polymer chemistry; NATURVETENSKAP Kemi Organisk kemi Polymerkemi;

    Abstract : Linear and branched poly(butylene adipate) polyesters with number-average molecular weights ranging from 700 to 10 000 g/mol, and degrees of branching ranging from very low to hyperbranched were solution cast with PVC to study the effects of chemical structure, molecular weight, end-group functionality, and chain architecture on plasticizing efficiency and durability. Miscibility was evaluated by the existence of a single glass transition temperature and a shift of the carbonyl group absorption band. READ MORE

  4. 4. Boundaries of displacement Belonging and Return among Forcibly Displaced Young Georgians from Abkhazia

    University dissertation from Östersund : Mittuniversitetet

    Author : Minna Lundgren; Roine Johansson; Anna Olofsson; Barzoo Eliassi; Tone Bringa; [2016]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Georgia; Abkhazia; Caucasus; IDP; internal displacement; return; forced displacement; youth; border; riskscapes; uncertainty;

    Abstract : This dissertation explores the implications of borders and boundaries for how forcibly displaced young Georgians from Abkhazia understand issues of belonging and return. My theoretical framework draws from theories on home and belonging as well as theories on border and boundary making, and locates them in geographies of uncertainty – or riskscapes – areas characterized by conflict and/or inequality. READ MORE

  5. 5. Chromosome dynamics and genomic instablity in neuroblastoma. Three genomic pillars: MYCN amplification, numerical and structural changes

    University dissertation from Faculty of Medicine, Lund University

    Author : Gisela Lundberg; [2012]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neuroblastoma; MYCN; telomeres; chromosomal instability;

    Abstract : In this thesis, the main focus has been on the childhood cancer neuroblastoma, one of the most common and lethal childhood tumours. Neuroblastoma has througout the years continued to be a clinical and biological enigma. READ MORE