Sökning: "solidification time"

Visar resultat 1 - 5 av 32 uppsatser innehållade orden solidification time.

  1. 1. Apparent density for water atomized low-carbon steel powder

    Master-uppsats, KTH/Materialvetenskap

    Författare :Simon Lindström; [2023]
    Nyckelord :;

    Sammanfattning : Carbon content does not affect the apparent density for water atomized iron powder monotonically. At low carbon content, around 0.1 wt %, apparent density is higher than a similar powder with 0.3 wt % carbon. LÄS MER

  3. 2. Michael additions utilizing transition-metal-catalysts, Scope and limitations

    Kandidat-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Ruben Hansson; [2023]
    Nyckelord :Green chemistry; transition metal; rare earth metal; Michael addition; Yb; Zr; Hf; analytical chemistry; Chemistry;

    Sammanfattning : The effect that organic solvents have on the environment and the intrinsic risk that come with using them should be limited. By replacing organic solvents with less harmful solvents, such as water, and with more effective catalysts can risks intrinsic to organic solvents be minimized or eliminated. LÄS MER

  4. 3. Hur gammal är jordens inre kärna?

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Tim Bergström; [2023]
    Nyckelord :Inner core; thermal conductivity; convection; Earth’s magnetic field; paleomagnetism; Earth and Environmental Sciences;

    Sammanfattning : Åldern för jordens inre kärna är en gåta som har förbryllat forskare i många decennier. Allt från en ålder lika hög som jordens magnetfält (mellan 3,5 och 4,2 Ga) i den ena änden, ner till 0,5 Ga i den andra änden. LÄS MER

  5. 4. Dissolution of Cored Wire in Steel Melt : Optimization of Feeding Rate

    Master-uppsats, KTH/Materialvetenskap

    Författare :Hagen Christian Hagens; [2022]
    Nyckelord :Cored wire injection · light alloy addition · feed rate optimization · inclusions modification · finite difference method;

    Sammanfattning : Calcium treatment is an established operation in the production of steels. Most importantly, it serves to modify detrimental inclusions in the melt for improved castability and superior product properties. Due to calcium’s low melting point and high vapour pressure, its addition to liquid steel is challenging and yields are generally low. LÄS MER

  7. 5. The Effect of Process Parameters on Columnar-To-Equiaxed-Transition (CET) During Electron Beam-Powder Bed Fusion of Ferritic Stainless Steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Doom Eleanor Ihensekhien; [2022]
    Nyckelord :Additive manufacturing; E-PBM; Inoculation; process parameters; TiN; CET;

    Sammanfattning : Electron Beam Powder Bed Fusion manufacturing of components is an additive manufacturing process that is complex and has widespread advantages for aerospace and many industrial processes. It reduces costs and has a larger powder particle size requirement. LÄS MER