Sökning: "Martensite phase transformation"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Martensite phase transformation.

  1. 1. Influence from temperature variations in stacking fault energy on the mechanical properties of stainless steels

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Christopher Hallén; Marcus Johansson Storne; [2023]
    Nyckelord :;

    Sammanfattning : This paper investigates the mechanical properties and deformation mechanisms of austenitic stainless steels and how they relate to the material property of stacking fault energy (SFE) and its relation to temperature and nickel content. Austenitic stainless steels are commonly used and well known for good mechanical properties and deformation characteristics. LÄS MER

  3. 2. 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

  4. 3. DILATOMETRIC EVALUATION OF SOME CRITICAL PHYSICAL PROPERTIES OF OT75 AND OT101 STEEL GRADES

    M1-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Wrya Mohamadian; [2021]
    Nyckelord :Steels; Martensite; Ms; Quenching; Heat treatment; Dilatometer; Mechanical property; Critical temperature; Phase transformation; hardness.;

    Sammanfattning : Due to its hardness, martensite, perhaps, is the most desirable structure, but at the same time, martensite is very brittle. Balancing between hardness and brittleness is a challenge that steel manufacturers must deal with it. To decrease brittleness and to solve this problem, designers purposely temper the steel. Heat treatment, e. LÄS MER

  5. 4. Laser Hardening for Application on Crankshaft Surfaces Using Non-Uniform Beam Intensity Distributions

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Victor Rönnerfjäll; [2019]
    Nyckelord :Laser transformation hardening; Crankshaft surface; Non-uniform beam intensity distributions; Hypoeutectoid steel; Microalloyed steel; 44MnSiVS6;

    Sammanfattning : A controlled continuous laser output using a circular geometry with a gaussian intensity distribution was used to harden the surface of a particular metal specimen (44MnSiVS6). Said beam operated within a relatively small power interval, just barely past the melting point. LÄS MER

  7. 5. Dilatometry Study of a High-Chromium Cast Iron

    Master-uppsats, KTH/Hållfasthetslära (Avd.)

    Författare :Benjamin Solem; [2018]
    Nyckelord :;

    Sammanfattning : High-chromium cast irons are used in certain applications where the demand on abrasion resistance is high. Such applications can be found in the milling industry and in pumps for transport of abrasive particles in liquid suspension. Soft annealed high-chromium cast iron containing 2.6 % C and 24. LÄS MER