Essays about: "nickel alloys"

Showing result 6 - 10 of 35 essays containing the words nickel alloys.

  1. 6. Optimization of the process-route of a Nickel-base alloy : Investigation of Sigma-phase precipitation in heat treatment

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Felix Andersson; [2023]
    Keywords : Sigma-phase; austenitic stainless steel; Nickel-base alloy; heat treatment; Sigmafas; austenitiskt rostfritt stål; Nickelbas legering; värmebehandling;

    Abstract : The focus of this master’s thesis is on the heat treatment of Ni-base alloys, specifically the risk of intermetallic σ-phases during different stages of heat treatment. The alloy studied is Sanicro®28, a super-austenitic stainless steel produced by Alleima AB. READ MORE

  3. 7. An overview of the development and potential of ceramic materials for use in micro gas turbines

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Alexander Ahlqvist Fehr; [2023]
    Keywords : Gas Turbines; Ceramics; Micro Gas Turbines; Gas Turbiner; Keramik; Mikro Gas Turbines;

    Abstract : This paper presents an analysis of the potential of Micro Gas Turbines (MGT) with regards to performance, economic and durability considerations. The performance potential was assessed by calculating the cycle efficiency based on the Brayton cycle and the mechanical efficiency of the expansion turbine. READ MORE

  4. 8. Electrochemical corrosion analysis of nickel-based superalloys

    University essay from KTH/Yt- och korrosionsvetenskap

    Author : Robin Gonzalez; [2022]
    Keywords : Electrochemistry; corrosion; nickel; polarization; EIS; Elektrokemi; korrosion; nickel; polarisation; EIS;

    Abstract : Elektrokemisk korrosionsanalys av legeringar är en essentiell del av den större materialanalysen som måste utföras när en legerings lämplighet för en viss applikation evalueras. Nickelbaserade legeringar är kända för sin utmärkta korrosionsresistans, och de Ni-Cr-Mo-baserade legeringarna 59, 625, och 718 är också så kallade superlegeringar. READ MORE

  5. 9. Development of Nickel-Titanium Shape Memory Alloys using Electron Beam Melting

    University essay from KTH/Materialvetenskap

    Author : Georgios Manolios; [2022]
    Keywords : ;

    Abstract : In this project, the effect of electron beam melting on the behavior of NiTi shape memory alloyshas been studied, with focus on the effects of recycling powder within the process and theprocess parameters used and how “smoking” is affected. Flowability, powder characteristicsand chemical composition have been evaluated using imaging analysis techniques, Hallflowmeter measurements, FT4 powder rheometry and energy dispersive X-ray spectroscopyboth in virgin powder and in recycled powders. READ MORE

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

    University essay from Uppsala universitet/Institutionen för materialvetenskap; Uppsala universitet/Institutionen för kemi - Ångström

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

    Abstract : 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. READ MORE