Essays about: "Austenite"

Showing result 6 - 10 of 34 essays containing the word Austenite.

  1. 6. DILATOMETRIC EVALUATION OF SOME CRITICAL PHYSICAL PROPERTIES OF OT75 AND OT101 STEEL GRADES

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

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

    Abstract : 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. READ MORE

  3. 7. Machine learning for the prediction of duplex stainless steel mechanical properties : Hardness evolution under low temperature aging

    University essay from KTH/Materialvetenskap

    Author : Baptiste Giard; Sofia Karlsson; [2021]
    Keywords : Duplex Stainless Steel DSS; Machine Learning; Phase Separation; Me- chanical Properties; Alloying; Duplexa rostfria stål; Maskininlärning; Fasseparation; Mekaniska Egenskaper; Legering;

    Abstract : Duplex stainless steels, DSS are stainless steels that consist of the two phases austenite and ferrite.  The DSS have superb properties and are widely used in industries such as nuclear power and in pressure vessels, pipes and in pipelines.  The use of DSS are limited due to embrittlement which occurs at temperatures from 250 to 550 oC. READ MORE

  4. 8. Characterization of Secondary Carbides in Low-Alloyed Martensitic Model Alloy Tool Steels

    University essay from KTH/Materialvetenskap

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

    Abstract : 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. READ MORE

  5. 9. Casting and Characterization of Advanced High Strength Steels

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Daniel Hedman; [2020]
    Keywords : AHSS; characterization; casting; parlite; austenite; martensite; ferrite; grain size;

    Abstract : The Latin American steel making company Ternium S.A. aims to develop and produce a new type of advanced high strength steel (AHSS) in which the main alloying elements are carbon, aluminium, manganese, and silicon. READ MORE

  6. 10. Low temperature embrittlement of duplex stainless steels : A study of alloying elements’ effect

    University essay from KTH/Materialvetenskap

    Author : Libang Lai; [2020]
    Keywords : Duplex stainless steels; low temperature embrittlement; phase separation; alloying element; vanadium addition; mechanical properties; Rostfria duplexstål; sprödhet vid låg temperatur; fasseparering; legeringselement; tillsats av vanadin; mekaniska egenskaper;

    Abstract : Duplex stainless steels (DSSs), consisting of an equal amount of ferrite and austenite phases, have wide applications in e.g. vehicles, chemical engineering as well as nuclear plant  because  of  the  combination  of  excellent  mechanical properties  and  corrosion resistance. READ MORE