Sökning: "Powder Metallurgy"

Visar resultat 11 - 15 av 39 uppsatser innehållade orden Powder Metallurgy.

  1. 11. Intermetallic Compound Formation in Ni-Ti-Fe Powder Mixtures

    Master-uppsats, Lunds universitet/Materialteknik

    Författare :Tea Bertilsson; [2018]
    Nyckelord :Phase Evolution; Ni-Ti-Fe System; Intermetallics; Powder Metallurgy; Reactive Sintering; DSC; SEM; EDS; XRD; Technology and Engineering;

    Sammanfattning : The Ni-Ti system has a broad range of applications, in areas as diverse as biomedicine and robotics. This is in large due to the NiTi intermetallic compound, which exhibits the shape memory effect. In addition to this property, the intermetallic compound is also biocompatible, has good mechanical properties and good corrosion resistance. LÄS MER

  3. 12. Design of cemented carbide with Ni-based superalloy binder strengthened with y’-Ni3Al precipitates

    Master-uppsats, KTH/Materialvetenskap

    Författare :Oscar Edholm; [2018]
    Nyckelord :Cemented Carbide; Super alloy; Ni-alloy; Ni-Super alloy; Superalloy; Ni3Al; NiAl; Gamma Prime; Gamma; Precipitates; Ni3Al Precipitates; Master Alloy; Liquid Phase Sintering; Cementerad karbid; Hårdmetall; Superlegering; Ni-legering; Ni-Superlegering; Superalloy; Ni3Al; NiAl; Gamma Prim; Gamma; Precipitates; Ni3Al Precipitates; Mästerlegering; Utfällning;

    Sammanfattning : Replacement of cobalt in cemented carbides has gained in attention recently because threats of regulations due to health issues (cancerogenic effect), increased demand from the electric vehicle industry and the questionable extraction from countries like Democratic Republic of Congo. In this report the use of Ni-based binder as an alternative binder for cemented carbides has been explored. LÄS MER

  4. 13. Process Optimization of Manufacturing of Magnets by Electro Sinter Forging (ESF)

    Master-uppsats, KTH/Industriell produktion

    Författare :Marco CAPECCIA; [2018]
    Nyckelord :;

    Sammanfattning : Interest in powder metallurgy processes is nowadays continuously increasing due to several reasons such as less heavy manufactured parts, economical advantages and greater concern in environmental sustainability related to production. Electro sinter forging, ESF, belongs to them, being a sintering technique characterized by high electric current intensity released for a very short lapse of time at low voltage on a powder green body, together with an applied load. LÄS MER

  5. 14. In-situ Reduction by Incorporating H2 Filled Hollow Glass Microspheres in PM HIP Capsules

    Master-uppsats, KTH/Materialvetenskap

    Författare :Emil Strand; [2018]
    Nyckelord :Hot isostatic pressing; hollow glass microspheres; powder metallurgy; oxide reduction; surface oxides; hydrogen;

    Sammanfattning : For many metal components the presence of hard, non-metallic inclusions such as oxides lowers the impact toughness by acting as fracture initiation points and easing crack propagation. In components produced by powder metallurgy hot isostatic pressing (PM HIP), oxides often form a continuous network of small, spherical inclusions after consolidation at the prior particle boundaries (PPB). LÄS MER

  7. 15. DETERMINATION OF THE STRESSES PRESENT IN A HY-VO CHAIN SPROCKET USING MULTIBODY SIMULATION AND FINITE ELEMENT ANALYSIS

    Master-uppsats, Lunds universitet/Mekanik

    Författare :Henrik Larsson; [2018]
    Nyckelord :Hy-Vo; chain; sprocket; simulation; ADAMS; fatigue; Technology and Engineering;

    Sammanfattning : In this master thesis, a new way of approaching the dynamic loads on a Hy-Vo chain sprocket was investigated and analyzed. Though the approach was not new on the market, it was new to BorgWarner, whose calculations on the matter to this date have been based on approximations. LÄS MER