Sökning: "solid-state welding"

Hittade 4 uppsatser innehållade orden solid-state welding.

  1. 1. Modeling of Precipitation by Structural Phase-Field Crystal Method

    Master-uppsats, Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

    Författare :Jacob Holmberg-Kasa; [2021]
    Nyckelord :strain-age cracking; SAC; structural phase-field crystal; XPFC; nickel-based alloys; precipitation;

    Sammanfattning : Nickel-based alloys are used in components such gas turbines within the aerospace industry and electric power generation due to its high tensile, rapture and creep strength. Increasing the efficiency of gas turbines are crucial to reduce emissions within the aerospace industry and increasing power gain for electric power generation. LÄS MER

  3. 2. Alternative welding methods for nitrogen alloyed steel

    Uppsats för yrkesexamina på grundnivå, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Anders Bertilsson; [2017]
    Nyckelord :Nitrogen alloyed tool steel; Uddeholm Vanax SuperClean; solid-state welding; direct-drive friction welding; friction stir welding; microstructure; Vickers microhardness testing; retained austenite measurement by X-ray diffraction; Kvävelegerat verktygsstål; Uddeholm Vanax SuperClean; trycksvetsning; friktionssvetsning; friktionsomrörningssvetsning; mikrostruktur; Vickers mikrohårdhetsmätning; restaustenitmätning med röntgendiffraktion;

    Sammanfattning : This project explores the feasibility of the solid-state welding method direct-drive friction welding to be used as a joining method for the nitrogen alloyed steel Uddeholm Vanax SuperClean, produced via processes based on powder metallurgy. Vanax SuperClean cannot be welded using fusion welding methods where the base material melts, due to nitrogen escaping the material, resulting in inferior quality welds. LÄS MER

  4. 3. Robotic 3D friction stir welding : T-butt joint

    Magister-uppsats, Högskolan Väst/Avd för automationssystem

    Författare :Cheng Zhang; [2015]
    Nyckelord :Friction stir welding; robotic friction stir welding; three-directional welds;

    Sammanfattning : This Master Thesis was performed in terms of robotic three dimensional friction stir welding with T-butt joint. Friction stir welding (FSW) is a solid state welding method that achieves the weld temperature by friction of a rotating non-consumable tool with the workpiece. LÄS MER

  5. 4. Intensity distribution conversion from Gaussian to Top-Hat in a single-mode fiber connector

    Master-uppsats, Lunds universitet/Atomfysik

    Författare :Ola Willstrand; [2013]
    Nyckelord :Gaussian beam; top-hat; fiber connector; Powell lens; FRED; ZEMAX; Physics and Astronomy;

    Sammanfattning : Gaussian to top-hat beam shaping is widely used today in areas of cutting, welding, and laser patterning. Typically, single-mode solid state lasers are used whose Gaussian intensity distribution is transformed into a top-hat. LÄS MER