Sökning: "tempered martensite"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden tempered martensite.

  1. 1. Mechanical and tribological characterization of additivemanufactured Co-free tool steels aimed for cutting tool bodies

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Mayur Mane; [2021]
    Nyckelord :Co-free maraging steels; Co-free W360 AMPO alloy; hot-work tool steel; Selective laser melting; microstructure; wear;

    Sammanfattning : Additive manufacturing (AM) is an emerging and interesting technology that enables some of theproduct development projects (PDPs) to produce products that have mechanical and tribologicalproperties comparable to products that are conventionally manufactured. Selective laser melting(SLM) is an additive manufacturing technology that is predominantly used for the production of metalbased components (i. LÄS MER

  3. 2. 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

  4. 3. Reliable Carburization of AISI H13 Steel : The Impact of Preoxidation

    Master-uppsats, KTH/Materialvetenskap

    Författare :Martin Palm; [2020]
    Nyckelord :Preoxidation; Case hardening; Uddeholm Orvar® Superior; Passive oxide layers; Iron oxides; Carbon adsorption;

    Sammanfattning : Case hardened Uddeholm Orvar® Superior (Orvar) has the potential to replace currently used materials in shafts inside transmissions, which would lower the overall weight and thus result in lower fuel consumption while maintaining the necessary mechanical properties. However, previous studies have failed to reliably carburize the steel during the case hardening process. LÄS MER

  5. 4. Wear resistance of heat-treated Advanced High Strength Steels and casting

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

    Författare :Joan Morata Royes; [2020]
    Nyckelord :;

    Sammanfattning : The necessity to improve the durability of the machinery used in the milling industry has lead to several types of research. One study is focused on the plates that are located in the stationary and moving jaws of crushers to diminish particles sizes of Gneiss and Diabase rocks. LÄS MER

  7. 5. Quenching and tempering hardness response of front axle steel beams : Different material properties during quenching and tempering

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Simon Zemui; [2017]
    Nyckelord :Axle steel beams; hardness; Quenching; tempering;

    Sammanfattning : The aim of this thesis was to investigate what the relation is between as-quench hardness and final surface hardness for steel beams is, depending on what tempering temperature is used. Also explain how chemistry, dimension and microstructure effects the final mechanical properties of the front axle beam. LÄS MER