Sökning: "ferritic steels"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden ferritic steels.

  1. 1. Long term aging and creep exposure for advanced heat resistant alloys : A phase analysis

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap; Uppsala universitet/Institutionen för kemi - Ångström

    Författare :Daniel Lundberg; Filip Wilson; Hjalmar Gunnarsson; Leo Sjörén; Robin Xu; Erik Djurberg; [2021]
    Nyckelord :Austenitic stainless steel; ferritic steels; nickel based alloys; creep; ageing; XRD; SEM EDS; LOM;

    Sammanfattning : This project was ordered by Sandvik Materials Technology and was performed by a group of students at Uppsala university. The purpose of the project was to study precipitation behavior and structure stability in six advanced heat resistant alloys. Each sample were subjected to a creep rupture test in 600 or 700°C depending on the alloy type. LÄS MER

  3. 2. Improved interconnect materials for next-generation Solid Oxide Fuel Cells

    Master-uppsats, KTH/Materialvetenskap

    Författare :Pablo Collantes; [2019]
    Nyckelord :Solid Oxide Fuel Cells; High Temperature Corrosion; Self-healing; Interconnects;

    Sammanfattning : Solid Oxide Fuel Cells (SOFC) are attractive candidates in the search for cleaner and energy efficient production due to their numerous advantages such as fuel flexibility, modularity and exceptional efficiencies when combined heat and power is harnessed. A key element in its design are the interconnects which are mainly manufactured from custom ferritic stainless steels to carry the electricity between two adjacent cells. LÄS MER

  4. 3. Modelling of spinodal decomposition in the binary Fe-Cr system

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Viking Roosmark; [2016]
    Nyckelord :SPINODAL DECOMPOSITION; FE-CR; DIFFUSION; FERRITIC STAINLESS STEAL;

    Sammanfattning : Spinodal decomposition is a phenomenon which hinders the usage of ferrite containing steels under certain conditions. With a better understanding and knowledge of spinodal decomposition new ferritic and duplex stainless steels could be designed. The project is divided into two parts, an experimental part and a theoretical part. LÄS MER

  5. 4. Overlay welding of FeCrAl alloys

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

    Författare :Lezan Rashid; [2016]
    Nyckelord :Overlay welding; FeCrAl; TIG; MIG; welding evaluation;

    Sammanfattning : In this master thesis different overlay welding methods suitable for boiler application has been investigated. The purpose of this project is to define advantages and disadvantages for each overlay welding methods and suggest some evaluation criteria on some commercial and experimental alloys aimed for overlay welding material. LÄS MER

  7. 5. Investigation of Materials for Use in Exhaust Gas Condensate Environment with Focus on EGR systems

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för tillämpad fysik och elektronik

    Författare :Andreas Olofsson; [2012]
    Nyckelord :;

    Sammanfattning : EGR (Exhaust Gas Recirculation) ar en teknik som anvands for dieselmotorer, for att mota de hart satta utslappskraven for kvaveoxider. EGR fungerar genom att en del av avgaserna aterfors till cylindrarna. Avgaserna gor sa att den maximala forbranningstemperaturen sanks, vilket kraftigt reducerar bildandet av kvaveoxider. LÄS MER