Sökning: "precipitation hardening"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden precipitation hardening.

  1. 1. Precipitation analysis in bearing steel Hybrid 60

    Master-uppsats, KTH/Materialvetenskap

    Författare :Rebecca Rosén; [2023]
    Nyckelord :martensitic steel; secondary hardening; precipitation; PRISMA; martensitiskt stål; sekundärhärdning; utskiljning; PRISMA;

    Sammanfattning : New materials are always being developed to get the best properties possible where needed. The way to create these materials and test them is also developing. When it comes to high-strength steels, a martensitic microstructure is a common choice. LÄS MER

  3. 2. Metal Removal Efficiency of Five Filter Media Intended for use in Road Stormwater Treatment Facilities

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Lovisa Lundgren; [2021]
    Nyckelord :Stormwater; Metal removal efficiency; Filter media; Dagvatten; Metallavskiljningskapacitet; Filtermaterial;

    Sammanfattning : Roads, buildings, vehicles, and human activities cause spreading of pollutants, which partly end up in stormwater. The pollutant load contains solid particles of various size, hydrocarbons, organics, metals, nutrients, and microorganisms, which can have negative effects on water quality of surface-, coastal- and ground waters. LÄS MER

  4. 3. Long term aging and creep exposure for advanced heat resistant alloys : A phase analysis

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap; Uppsala universitet/Institutionen för kemi - Ångström

    Författare :Daniel Lundberg; Filip Wilson; Hjalmar Gunnarsson; Leo Sjörén; Robin Xu; Erik Djurberg; [2021]
    Nyckelord :Austenitic stainless steel; ferritic steels; nickel based alloys; creep; ageing; XRD; SEM EDS; LOM;

    Sammanfattning : This project was ordered by Sandvik Materials Technology and was performed by a group of students at Uppsala university. The purpose of the project was to study precipitation behavior and structure stability in six advanced heat resistant alloys. Each sample were subjected to a creep rupture test in 600 or 700°C depending on the alloy type. LÄS MER

  5. 4. Linkage of Macro- and Micro-scale Modelling Tools for Additive Manufacturing

    Master-uppsats, KTH/Materialvetenskap

    Författare :Julia Sjöström; [2020]
    Nyckelord :Maraging steel; selective laser melting; temperature evolution; macro-scale modelling; segregation; ICME.;

    Sammanfattning : Additive manufacturing methods for steel are competing against commercial production in an increasing pace. The geometry freedom together with the high strength and toughness due to extreme cooling rates make this method viable to use for high-performance components. The desirable material properties originate from the ultrafine grain structures. LÄS MER

  7. 5. Characterization of Secondary Carbides in Low-Alloyed Martensitic Model Alloy Tool Steels

    Master-uppsats, KTH/Materialvetenskap

    Författare :Jubica Jubica; [2020]
    Nyckelord :martensitic steel; secondary hardening; precipitation; STEM; EDS; Prisma; size distribution; martensitiskt stål; sekundärhärdning; utskiljning; STEM; EDS; PRISMA; storleksfördelning;

    Sammanfattning : The development of tool steels for making and shaping other materials requires a better understanding of the material's properties during manufacture. These high-quality steels include many alloying elements, which give increased hardness during tempering. For producing hardened microstructures, austenite generation is essential. LÄS MER