Sökning: "superlegering"

Hittade 4 uppsatser innehållade ordet superlegering.

  1. 1. 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

  3. 2. Design of cemented carbide with Ni-based superalloy binder strengthened with y’-Ni3Al precipitates

    Master-uppsats, KTH/Materialvetenskap

    Författare :Oscar Edholm; [2018]
    Nyckelord :Cemented Carbide; Super alloy; Ni-alloy; Ni-Super alloy; Superalloy; Ni3Al; NiAl; Gamma Prime; Gamma; Precipitates; Ni3Al Precipitates; Master Alloy; Liquid Phase Sintering; Cementerad karbid; Hårdmetall; Superlegering; Ni-legering; Ni-Superlegering; Superalloy; Ni3Al; NiAl; Gamma Prim; Gamma; Precipitates; Ni3Al Precipitates; Mästerlegering; Utfällning;

    Sammanfattning : Replacement of cobalt in cemented carbides has gained in attention recently because threats of regulations due to health issues (cancerogenic effect), increased demand from the electric vehicle industry and the questionable extraction from countries like Democratic Republic of Congo. In this report the use of Ni-based binder as an alternative binder for cemented carbides has been explored. LÄS MER

  4. 3. Mikrostruktur och tribologiska egenskaper för additivt tillverkat Inconel 718

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Jonas Larsson; [2016]
    Nyckelord :additive manufacturing; 3D-printing; tribology; superalloy; microstructure; anisotropy; wear; sliding contact; friction; hardness; additiv tillverkning; 3D-skrivning; tribologi; superlegering; Inconel 718; mikrostruktur; anisotropi; nötning; glidande kontakt; friktion; hårdhet;

    Sammanfattning : The present work was performed to improve the knowledge and understanding about the microstructure and tribological properties of additive manufactured Inconel 718 made with the technique Electron beam melting (EBM). The objective is to see if the microstructure and the properties have some anisotropy and if different processing routes differ. LÄS MER

  5. 4. Precipitation of Carbides in a Ni-based Superalloy

    Magister-uppsats, Högskolan Väst/Avd för tillverkningsprocesser

    Författare :Sukhdeep Singh Handa; [2014]
    Nyckelord :Carbides; Superalloys;

    Sammanfattning : Alloy B is relatively new precipitation hardening superalloy. It´s applications are in the hot sections of the aero engines, rocket nozzles, gas turbines and in the chemical and petro-leum applications. The alloy is characterized by keeping high strength at elevated tempera-tures and high creep resistance. LÄS MER