Sökning: "Hardening"

Visar resultat 16 - 20 av 340 avhandlingar innehållade ordet Hardening.

  1. 16. Material characterisation for simulation of press hardening

    Författare :Paul Åkerström; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : The growing effort to reduce vehicle weight and improve passive safety in the automotive industry has drastically increased the demand for ultra high strength steel components. There exist several production methods for such components, where the press hardening technique (hot stamping) is one of the most successful in producing complex components from boron steel. LÄS MER

  3. 17. Protecting Software Execution by Dynamic Environment Hardening

    Författare :Per Mellstrand; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Software has an important role in many systems, in particular in critical systems where the correct function of the larger system is of utmost importance. Software malfunction, or software exploits, that allow other system components or an adversary to control the execution of software, can cause significant damage to the system, and hence to what is controlled by the system. LÄS MER

  4. 18. Anisotropic fatigue properties of engineering steel : a microstructural characterisation

    Författare :Jonas Höijer; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microstructure; fractography; LOM; SIMS; manganese sulphide morphology; fatigue; case hardening steel; Anisotropy; SEM; forging; through hardening steel;

    Sammanfattning : .... LÄS MER

  5. 19. Weld Cracking in Precipitation Hardening Ni-based Superalloys

    Författare :Fabian Hanning; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; welding; post weld heat treatment; weldability; Nickel based superalloys; strain age cracking; weld cracking;

    Sammanfattning : Manufacturing of hot structural components for aero engines requires the materials being used to be weldable. The high demands on strength and temperature resistance make nickel based superalloys the material of choice for this application. LÄS MER

  7. 20. High Temperature Friction and Wear in Press Hardening

    Författare :Sergej Mozgovoy; Manel Rodriguez Ripoll; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : In the automotive industry, press hardening is usually employed to produce safety orstructural components from advanced high–strength steels. This hot forming process, andthermomechanical forming processes in general, is highly dependent on friction betweentool and workpiece as friction affects and controls the deformation of the workpiece. LÄS MER