Sökning: "Förgrovning"

Hittade 5 uppsatser innehållade ordet Förgrovning.

  1. 1. Microstructural design and optimization of Nickel-based superalloys for gas turbines

    Master-uppsats, KTH/Materialvetenskap

    Författare :Anirudh Vasishta; [2023]
    Nyckelord :Nickel- based superalloys; gamma prime γ′ size calculations; Nickelbaserade superlegeringar; gamma prime γ′ storleksberäkningar;

    Sammanfattning : One of the main sources of energy in this modern world is the gas turbine.  They reach extremely high working temperatures at peak capacity and hence require materials that can withstand the same. LÄS MER

  3. 2. Modelling of precipitation in an Fe-C-Cr alloy

    Master-uppsats, KTH/Materialvetenskap

    Författare :Johan Frisk; [2019]
    Nyckelord :;

    Sammanfattning : Precipitation modelling is interesting from both an academic and an industrial point of view. Such modelling tools may be used in the field of integrated computational materials engineering (ICME) for design and optimization of material properties. LÄS MER

  4. 3. Understanding the effect of temperature and time on Gamma prime coarsening for Nickel-base superalloy Haynes 282

    Master-uppsats, KTH/Materialvetenskap

    Författare :Kevin Vattappara; [2019]
    Nyckelord :Haynes 282; gamma prime 𝛾′ ; Arc-heat treatment; COMSOL modelling; isothermal transformation; coarsening; Thermo-Calc simulations;

    Sammanfattning : Haynes 282 is a gamma prime (𝛾′)-strengthened nickel base superalloy developed in 2005, exhibiting a good combination of high temperature properties and fabricability. Microstructural features such as 𝛾′ and carbides play an important role in deriving the mechanical properties of the alloy during heat treatment. LÄS MER

  5. 4. Optimization of annealing parameters for SANDVIK 13C26 and 20C strip steels : By MODDE analysis and modified JMAK method

    Master-uppsats, KTH/Materialvetenskap

    Författare :Ahamed Ameen; [2019]
    Nyckelord :Recrystallization; EBSD; Optimization; MODDE; JMAK analysis; strip steels;

    Sammanfattning : The process optimization of continuous annealing furnace, RHF 125, for recrystallization annealing of two steel grades, Sandvik 13C26 and Sandvik 20C has been carried out. To recreate the continuous annealing process carried out in the roller hearth furnace in the industry, samples with different cold reduction rates were chosen from ongoing production lines. LÄS MER

  7. 5. Hur påverkar avrundningar tillförlitligheten hos parameterskattningar i en linjär blandad modell?

    Kandidat-uppsats, Uppsala universitet/Statistiska institutionen

    Författare :Li Stoorhöök; Sara Artursson; [2016]
    Nyckelord :Coarsening; Heaping; Likelihood ratio test LRT ; Linear Mixed Models; Mean square error MSE ; Measurement error; Power; Reliability; Rounding; Type I-error; Validity; Avrundning; Förgrovning; Hopning; Likelihood ratio test LRT ; Linjär blandad modell; Medelkvadratfel MSE ; Mätfel; Reliabilitet; Styrka; Typ 1-fel; Validitet;

    Sammanfattning : Tidigare studier visar på att blodtrycket hos gravida sjunker under andra trimestern och sedanökar i ett senare skede av graviditeten. Högt blodtryck hos gravida kan medföra hälsorisker, vilket gör mätningar av blodtryck relevanta. Dock uppstår det osäkerhet då olika personer inom vården hanterar blodtrycksmätningarna på olika sätt. LÄS MER