Sökning: "parent material"

Visar resultat 11 - 15 av 98 avhandlingar innehållade orden parent material.

  1. 11. Formation of Bainite in Steels

    Författare :Jiaqing Yin; Annika Borgenstam; Bevis Hutchinson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fe-C alloys; Bainitic transformation; Proeutectoid ferrite; Upper bainite; Lower bainite; Morphology; Steels.; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : A systematic survey of morphology of bainite and proeutectoid ferrite was carried out in order to validate some old thoughts of bainite transformation mechanism. It is confirmed that there is no morphological evidence supporting a sharp change neither between Widmanstätten ferrite and the ferritic component of upper bainite, nor between upper and lower bainite. LÄS MER

  3. 12. Weldability and Testing Methodology in Precipitation Hardening Superalloys

    Författare :Jonny Jacobsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Weldability; Alloy 718; ATI® 718Plus™ and Haynes® 282®; Superalloys; Varestraint; Waspaloy®;

    Sammanfattning : Usable weldability data is desired in the manufacturing industry, especially within the aerospace industry where fabrication of structural jet engine components are realized. Welding of precipitation hardening superalloys such as Waspaloy®, Alloy 718, ATI® 718Plus™ and Haynes® 282® in particular can lead to solidification cracking in the fusion zone, liquation cracking in the heat affected zone and/or to solid state cracking. LÄS MER

  4. 13. Blinda barn och seende föräldrar i utveckling och kommunikation

    Författare :Agneta Thorén; Philip Hwang; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Children with visual disabilities; Parent and child; congenital blindness; parent-child communication; parental verbal styles; development; autistic-like behaviour; longitudinal; multiple case-studies; video-recorded observation; Barn med synskada; Föräldrar och barn; Verbal kommunikation; psykologiska aspekter; psykologi; Psychology;

    Sammanfattning : The aim of this descriptive, longitudinal study is to contribute to an understanding of parents’ influences on vital developmental processes in congenitally blind children. Without visual impressions verbal communication can have an important compensatory function, giving the child access to the external world and to social information that can not be obtained by other means. LÄS MER

  5. 14. GETTING MORE OUT OF THE AFTERLIFE

    Författare :Derek Diener; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; MFA; remanufacturing; steel; company-level; Product EoL management; material efficiency;

    Sammanfattning : Material intensity related to product consumption has become part of societal discourse and reducing it has become a priority of some industrial actors. Focusing on product end-of-life (EoL) is one approach that many companies and research entities have taken to identify and enact material intensity reductions. LÄS MER

  7. 15. Evolutionary Resolutions of Conflicts with Mates and Offspring

    Författare :Roger Härdling; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Clutch evolution; Arms race; Idothea baltica; Evolutionary conflicts; Sexual conflicts; Parent-offspring; Endosperm; Ecology; Ekologi;

    Sammanfattning : In sexual conflicts and conflicts between parents and offspring, natural selection acts in different directions on the two sides. For example, males may be selected to achieve many mates, but female fitness may be maximised by monogamy. In this thesis I study the evolutionary outcome of these situations mainly by theoretical modelling. LÄS MER