Sökning: "Nitrogen Alloying"

Hittade 5 uppsatser innehållade orden Nitrogen Alloying.

  1. 1. Synthesis and thermoelectric properties of Cr1-xMexN (Me = Mo, V)

    Master-uppsats, Linköpings universitet/Tunnfilmsfysik

    Författare :Victor Rutberg; [2022]
    Nyckelord :Chromium nitride; thin films; thermoelectrics; physical vapour deposition; medium entropy alloy;

    Sammanfattning : Among emerging materials systems for thermoelectric applications, the early transition-metal nitrides based on ScN and CrN show unexpectedly promising properties. These properties are determined by high Seebeck coefficient, low thermal conductivity, and high electrical conductivity. LÄS MER

  3. 2. Nitrogen Without Oxygen : The effect of ferroalloys added after vacuum treatment on cleanliness of nitrogen-alloyed tool steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Leo Nilsson Hultén; [2021]
    Nyckelord :Tool steel; Electro-Slag Remelting ESR; Nitrogen Alloying; Ferroalloys; Nonmetallic Inclusions NMI; Verktygsstål; Elektroslaggomsmältning ESR; Kvävelegering; Ferrolegeringar; Ickemetalliska Inneslutningar NMI;

    Sammanfattning : Nitrogen-alloyed tool steel is made at Uddeholms AB by adding high-nitrogen ferroalloy after vacuum degassing where introduced impurities are hard to remove. In this thesis two types of high-nitrogen ferrochromium are compared, a solid version and a powder cored wire. LÄS MER

  4. 3. Evaluation of the η (Eta) nitride with three laboratory melts

    Magister-uppsats, KTH/Materialvetenskap

    Författare :Martin Lind; Cecilia Johansson; [2015]
    Nyckelord :η Eta nitride; high nitrogen; aging; equilibrium condition; precipitations; nitrides; π Pi nitride; High Temperature Austenitic Stainless Steel; η Eta nitrid; hög kvävehalt; åldring; jämviktstillstånd; utskiljningar; nitrider; π Pi nitrid; austenitiska rostfria högtemperaturstål;

    Sammanfattning : η (eta) nitride, Cr3Ni2SiN, is a precipitate found in high temperature austenitic stainless steel and is not yet included in Thermo-Calc steel database TCFE7. The aim of this thesis is to collect thermodynamic data to enable the addition of η nitride in the databases. LÄS MER

  5. 4. Precipitation Study in a High Temperature Austenitic Stainless Steel using Low Voltage Energy Dispersive X-ray Spectroscopy

    Master-uppsats, KTH/Materialens processteknologi

    Författare :Ali Gharehbaghi; [2012]
    Nyckelord :austenitic stainles steel; precipitation; EDS; low voltage EDS; micron-scale precipitates; sub-micron intragranular precipitates;

    Sammanfattning : Precipitation of second phase particles is a key factor dominating the mechanical properties of high temperature alloys. In order to control and optimize the precipitation effect it is of great importance to study the role of alloying elements in the formation and stability of precipitates. LÄS MER

  7. 5. Precipitation Study in a High Temperature Austenitic Stainless Steel using Low Voltage Energy Dispersive X-ray Spectroscopy

    Master-uppsats, KTH/Materialens processteknologi

    Författare :Ali Gharehbaghi; [2012]
    Nyckelord :austenitic stainles steel; precipitation; EDS; low voltage EDS; micron-scale precipitates; sub-micron intragranular precipitates;

    Sammanfattning : Precipitation of second phase particles is a key factor dominating the mechanical properties of high temperature alloys. In order to control and optimize the precipitation effect it is of great importance to study the role of alloying elements in the formation and stability of precipitates. LÄS MER