Sökning: "Hardening"

Visar resultat 11 - 15 av 340 avhandlingar innehållade ordet Hardening.

  1. 11. Indentation effects in plastic zones

    Författare :Cecilia Eriksson; KTH; []
    Nyckelord :Hardness testing; Mechanical properties; Residual stress; Residual strain; Microindentation; Nanoindentation; Secondary indentation; Micro cracking; Strain Hardening; Pressure hardening; Pressure Sensitivity; AMF; FEM; Brittle materials;

    Sammanfattning : .... LÄS MER

  3. 12. Hårdare kulytor: tekniska och mekaniska förfaranden

    Författare :Per Öhl; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coldworking; hardening; bearing ball; surface; contact theories; hardness; residual stresses;

    Sammanfattning : .... LÄS MER

  4. 13. Nanostructuring and Age Hardening in TiSCN, ZrAlN, and TiAlN Thin Films

    Författare :Lars Johnson; Lars Hultman; Axel Flink; Linköpings universitet; []
    Nyckelord :thin films; age hardening; spinodal decomposition; TiSiCN; ZrAlN; TiAlN; Transmission electron microscopy; Atom probe tomography; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : This thesis explores nanostructuring in TiSiCN, ZrAlN, and TiAlN thin films deposited by cathodic arc evaporation onto cemented carbide substrates, with intended applications for cutting tools. The three systems were found to exhibit age hardening upon annealing, by different mechanisms, into the superhard regime (≥30 GPa), as determined by a combination of electron microscopy, X-ray diffraction, atom probe tomography, erda, and nanoindentation tech- niques. LÄS MER

  5. 14. Laser transformation hardening of steel surfaces

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

    Sammanfattning : The process of laser transformation hardening is a complex one to model in that there are a large number of parameters to account for. These include parameters of the process itself, e.g. beam intensity, intensity distribution, beam size, velocity of movement, degree of absorptivity, etc. LÄS MER

  7. 15. Effects on Machinability due to Microstructure Variations in Case Hardening Steel

    Författare :Karin Björkeborn; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machinability; Short-term test; Microstructure; Pearlite Nodular Size; Case Hardening Steel; Chip breakability.;

    Sammanfattning : Typical products made of case hardening steel are transmission parts like gear wheels, pinions and crown wheels. Case hardening produces a carbon-rich surface and provides the parts with both enhanced hardness and fatigue life. LÄS MER