Sökning: "vuorinen"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet vuorinen.

  1. 1. Controlling infiltration when brazing P/M parts and during manufacture of aluminium metal matrix composites

    Författare :Esa Vuorinen; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Sammanfattning : Infiltration is used in the production of several different material groups as electric contact materials, copper infiltrated sintered steels and metal matrix composites. The mechanism of infiltration causes also unwanted difficulties in processing as brazing of porous sintered compacts. LÄS MER

  2. 2. Structure and properties of advanced fine grained steels produced using novel thermal treatments

    Författare :Esa Vuorinen; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Sammanfattning : Fine grained advanced steels exhibit favourable mechanical properties for applications requiring high strength, ductility and impact toughness. These properties result from a microstructure containing a fine distribution of several phases including ferrite, austenite, martensite and bainite. LÄS MER

  3. 3. Mötet mellan föräldraansvar och förskollärarkompetens - föräldrasamverkan i förskolan

    Författare :Tuula Vuorinen; Anette Sandberg; Tor Nilsson; Sonja Sheridan; Pia Williams; Ingegerd Tallberg Broman; Mälardalens högskola; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; förskola; hem; samverkan; föräldrar; förskollärare; Didactics; didaktik;

    Sammanfattning : The overall aim of this thesis is to explore the experience of parental collaboration in preschool, by addressing preschool teachers’ competence and parental responsibility as described by preschool teachers and parents. The results are based on in-depth interviews with 30 preschool teachers and 10 parents. LÄS MER

  4. 4. The Alnö alkaline and carbonatitic complex, east central Sweden - a petrogenetic study

    Författare :Jaana Hode Vuorinen; Alasdair Skelton; Ulf Hålenius; Stefan Claesson; Ian Parsons; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; carbonatite; alkaline; Alnö; geochemistry; isotope; Earth sciences; Geovetenskap;

    Sammanfattning : The Alnö complex on the central Swedish east coast is composed of a main composite intrusion (the main intrusion) and four smaller satellite intrusions (Söråker, Sälskär, Långharsholmen and Båräng) distributed around the main intrusion on Alnö Island and on the mainland north of the island. The major rock types exposed within the complex are melilitolite, pyroxenite, ijolite series (melteigite-ijolite-urtite), nepheline syenite, carbonatite and alnöite dykes. LÄS MER

  5. 5. Increasing phase transformation rate in advanced high strength steel applications

    Författare :Farnoosh Forouzan; Esa Vuorinen; Frank Mücklich; Maria Santofimia Navarro; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Advanced high strength steel; Quenching and partitioning; welding; Engineering Materials; Materialteknik;

    Sammanfattning : The bainite transformation rate has been shown to increase by starting the heat treatment with partial martensite transformation after austenitization. Based on this fact, a process very similar to “Quenching and Partitioning” (Q&P) is used to produce a fine-grained complex microstructure of martensite, bainite and retained austenite with outstanding mechanical properties in a very short time. LÄS MER