Sökning: "Waspaloy"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet Waspaloy.

  1. 1. Weldability and Testing Methodology in Precipitation Hardening Superalloys

    Författare :Jonny Jacobsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Weldability; Alloy 718; ATI® 718Plus™ and Haynes® 282®; Superalloys; Varestraint; Waspaloy®;

    Sammanfattning : Usable weldability data is desired in the manufacturing industry, especially within the aerospace industry where fabrication of structural jet engine components are realized. Welding of precipitation hardening superalloys such as Waspaloy®, Alloy 718, ATI® 718Plus™ and Haynes® 282® in particular can lead to solidification cracking in the fusion zone, liquation cracking in the heat affected zone and/or to solid state cracking. LÄS MER

  2. 2. Influence of Microstructure in Machining of Nickel and Nickel-Iron Based Alloys

    Författare :Stefan Olovsjö; Chalmers University of Technology; []
    Nyckelord :Wear mechanisms; Simulation; Tool wear; Burr; Meta-modelling; Inconel 718; Metal cutting; Superalloy; Waspaloy; Chip morphology; Notch wear; Alloy 718; JMatPro;

    Sammanfattning : Superalloys are used in applications such as turbines, steam power plants and nuclear power systems in components that require good high temperature properties and/or corrosion resistance. They are classified as difficult-to-cut materials and hence, from a sustainable production point of view, tool wear and tool life are major factors when machining these alloys. LÄS MER

  3. 3. On the Effect of Grain Size and Hardness on the Machinability of Superalloys and Chip Deformation

    Författare :Stefan Olovsjö; Chalmers University of Technology; []
    Nyckelord :Superalloys; Microstructure; Burr; Machinability; Waspaloy; Chip microstructure; Tool wear; Alloy 718;

    Sammanfattning : Superalloys are used in applications such as gas turbines, steam power plants and nuclear power systems that require good high temperature properties and/or exceptional corrosion resistance. Superalloys are classified as materials that are “difficult to machine”. In production machining is a most commonly occurring procedure. LÄS MER

  4. 4. Weld Cracking of Precipitation Hardening Ni-based Superalloys - Investigation of repair welding characteristics and susceptibility towards strain age cracking

    Författare :Fabian Hanning; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ATI 718Plus®; Nickel-based superalloys; hot cracking; weldability; post-weld heat treatment; Gleeble; welding; weld cracking; strain age cracking; Waspaloy; Haynes 282;

    Sammanfattning : High temperature resistance and strength requirements make nickel-based superalloys the material of choice for the hot section of aero engines. Fabrication in terms of combining wrought and cast parts in the manufacturing of hot structural components enables component optimisation via the use of wrought high-strength parts, where geometrical constraints allow, and cast parts to produce complex geometries. LÄS MER

  5. 5. Hot Cracking and Grain Boundary Weaknesses of Nickel - Based Superalloys

    Författare :Joel Håkan Andersson; Chalmers University of Technology; []
    Nyckelord :Hot cracks; Notch rupture testing; Eutectic; Weldability; Varestraint testing; Grain boundary weaknesses; Superalloys;

    Sammanfattning : Abstract Grain boundary weaknesses of nickel-based superalloys not only materialize during service in the hot turbine engine sections but also during the weld manufacturing. The performance, in this respect, of the most commonly used alloys at Volvo Aero Corporation (VAC), 718 and the higher temperature capacity Waspaloy, are therefore the main subjects for this thesis. LÄS MER