Sökning: "Inneslutningar"

Visar resultat 21 - 25 av 56 uppsatser innehållade ordet Inneslutningar.

  1. 21. Optimization of Rare Earth Metals (REM) addition in high temperature stainless steel grade 253MA.

    Master-uppsats, KTH/Materialvetenskap

    Författare :Bharath Vasudev Rangavittal; [2019]
    Nyckelord :REM addition; non-metallic inclusion; oxidation; austenitic; optimization;

    Sammanfattning : The focus of this thesis work is to optimize rare earth metal (REM) addition in Therma 253MA, an austenitic stainless-steel grade in order to get a good trade-off between oxidation resistance property and the amount of big REM inclusions formed. Big REM inclusions are detrimental to material properties and REM is required to be dissolved in the matrix for improving the oxidation resistance. LÄS MER

  3. 22. Numerical Modeling of Aluminum Sampling Process

    Master-uppsats, KTH/Materialvetenskap

    Författare :Ming Yang; [2019]
    Nyckelord :Numerical modeling; Aluminum sampling; Solidification process; Inclusion distribution; Ansys Fluent.;

    Sammanfattning : Castings of aluminum alloys are widely used in the automotive and aerospace industries since they play a significant role in improving the performance and fuel efficiency. In aluminum industries, sampling is the most common method to evaluate the inclusion levels which is a key indicator for the quality of the aluminum alloys. LÄS MER

  4. 23. Comparison of 2D and 3D investigations of non-metallic inclusions in metal samples by different analytical methods

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Andreas Flyckt; [2019]
    Nyckelord :;

    Sammanfattning : The objective of this research is to make a comparison between 2D- and 3D-investigations of non-metallic inclusions (NMIs) in metal samples by different analytical methods. NMIs are undesired particles that degrade the quality of the steel through affecting the mechanical properties. LÄS MER

  5. 24. Genetic relationships and origin of the Ädelfors gold deposits in Southeastern Sweden

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Tobias Wiberg Steen; [2018]
    Nyckelord :Ädelfors; sulfur isotope ratio; pyrite chemistry; orogenic gold; gold; gold quartz vein; trace elements; gold mine; banded iron formation; SEM-EDS analysis; gold silver ratio; Ädelfors; svavelisotoper; pyritkemi; orogent guld; guldrik kvartsåder; guld; guldfyndighet; spårelement; bandad järnmalm; SEM-EDS analys; guld silver förhållande;

    Sammanfattning : Ädelfors is situated ca 17 km east of Vetlanda, Jönköping County, in the N-S striking Trans-scandinavian igneous belt and is a part of the NE-SW striking 1.83-1.82 Ga Oskarshamn-Jönköping belt emplaced during a continental subduction towards the Svecofennian continental margin. The continental arc hosts the 1. LÄS MER

  7. 25. Influence of fluxing agent on the quality of recycled Aluminium billets

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Nikolaos Chatzikos; [2018]
    Nyckelord :Secondary aluminium processing; fluxing agent; inclusion removal; aluminium recycling; Sekundär aluminiumframställning; flussmedel; borttagning av inneslutningar; aluminiumåtervinning;

    Sammanfattning : The quality of aluminium cast billets is highly dependent on the cleanliness of the material. Hydro Extruded Solutions are casting billets in Sjunnen that are delivered for extrusion within the same company. LÄS MER