Sökning: "microstructure"

Visar resultat 1 - 5 av 797 avhandlingar innehållade ordet microstructure.

  1. 1. Chromium martensitic hot-work tool steels damage, performance and microstructure

    Författare :Johnny Sjöström; Jens Bergström; Farhad Rezai-Aria; [2004]
    Nyckelord :Hot-work tool steel; thermal fatigue; microstructure; Materialteknik; Materials Engineering;

    Sammanfattning : Chromium martensitic hot-work tool steel (AISI H13) is commonly used as die material in hot forming techniques such as die casting, hot rolling, extrusion and hot forging. They are developed to endure the severe conditions by high mechanical properties attained by a complex microstructure. LÄS MER

  2. 2. Tool steel for tool holder applications microstructure and mechanical properties

    Detta är en avhandling från Karlstad : Karlstad University

    Författare :Anna Medvedeva; Jens Bergström; Birger Karlsson; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tool steel; tool holder; microstructure; mechanical properties; machinability; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Sammanfattning : Large improvements in cutting tool design and technology, including the application of advanced surface engineering treatments on the cemented carbide insert, have been achieved in the last decades to enhance tool performance. However, the problem of improving the tool body material is not adequately studied. LÄS MER

  3. 3. On Thermal Conductivity and Strength in Compacted Graphite Irons : Influence of Temperature and Microstructure

    Detta är en avhandling från Göteborg : Chalmers Reproservice

    Författare :Martin Selin; Ingvar L. Svensson; Attila Diószegi; Steve Dawson; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compacted Graphite Iron; Thermal Conductivity; Mechanical Properties; Hardness; Microstructure; Plastic Deformation; Hollomon Equation; Elevated Temperature; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Sammanfattning : Thermal conductivity, hardness and strength are all highly important material properties, affecting the performance and life expectancy of components operating at elevated temperatures. The main purpose of this work has been to increase the knowledge and understanding concerning how mechanical and physical properties are affected by temperature and microstructure in compacted graphite irons. LÄS MER

  4. 4. Interfacial Microstructure of Lanthanum Manganites

    Detta är en avhandling från Göteborg : Chalmers Reproservice

    Författare :Tomas Liljenfors; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; HRTEM; interfaces; thin-film; microstructure; TEM; EELS; manganites;

    Sammanfattning : .... LÄS MER

  5. 5. Development of microstructure in ceramic composites

    Detta är en avhandling från Göteborg : Chalmers Reproservice

    Författare :Håkan Björklund; [1993]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; grain growth; additives; quantitative microscopy; microstructure; aluminium oxide; whiskers; silicon nitride;

    Sammanfattning : .... LÄS MER