Sökning: "Brittle"

Visar resultat 21 - 25 av 262 avhandlingar innehållade ordet Brittle.

  1. 21. Tensile strength and ductile-brittle transition in low-carbon lath martensite steels

    Författare :Lars-Åke Norström; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  3. 22. Mechanical characterization and modelling of the fracture behaviour of thin brittle coatings on polymer films

    Författare :Marcus Vinícius Tavares da Costa; E. Kristofer Gamstedt; Christoph Kirchlechner; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Brittle coating; Polymer substrate; Crack density; Weibull distribution; SEM; Digital image correlation; Finite element modelling; Energy release rate;

    Sammanfattning : Thin brittle coatings with thickness of a few nanometres deposited on flexible polymer substrates form an interesting material combination for food packaging and flexible electronics. This combination may enhance the barrier performance in carton packages. In flexible electronics, coatings could conduct electricity despite their small thickness. LÄS MER

  4. 23. On the hot crack formation during solidification of iron-base alloys

    Författare :Karin Hansson; KTH; []
    Nyckelord :hot cracking; hot tearing; cracking fracturing ; tearing; ductility; brittleness; embrittlement; fractures; ductile brittle transition; solidification; iron; copper; nickel; Invar; steels; free machining steels; stainless steels; penetration; crack;

    Sammanfattning : Hot cracking during solidification is a severe problem inmany casting processes, for example in continuous casting.Combinations of low strength and low ductility of the materialat high temperatures and applied tensile stress can cause hotcracking. LÄS MER

  5. 24. Ab initio Investigation of Al-doped CrMnFeCoNi High-Entropy Alloys

    Författare :Xun Sun; Levente Vitos; Andreas Blomqvist; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-entropy alloys; Phase stability; Elastic anisotropy; Brittle ductile transition; Pugh criterion; First-principles calculation; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : High-entropy alloys (HEAs) represent a special group of solid solutions containing five or more principal elements. The new design strategy has attracted extensive attention from the materials science community. The design and development of HEAs with desired properties have become an important subject in materials science and technology. LÄS MER

  7. 25. Failure mechanisms in continuous fiber systems

    Författare :Jonas Neumeister; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; volume dependence; representative volume element; stress recovery; creep rupture; fiber fragmentation; tensile and flexural strength; brittle matrix composite; damage; fiber bundle; bundle pullout; failure propagation time; incubation time;

    Sammanfattning : .... LÄS MER