Search for dissertations about: "Nickel-based Alloys"
Showing result 1 - 5 of 25 swedish dissertations containing the words Nickel-based Alloys.
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1. Characterisation of Nickel-Based Superalloys Manufactued by Electron Beam Melting
Abstract : Nickel-based superalloys have been manufactured by electron beam melting (EBM). EBM is an additive manufacturing process for direct production of metal parts. The part is build up by successive melting of metal powder layers in a vacuum chamber using electron beam. READ MORE
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2. Furnace Wall Corrosion in a Wood-fired Boiler
Abstract : The use of renewable wood-based fuel has been increasing in the last few decades because it is said to be carbon neutral. However, wood-based fuel, and especially used wood (also known as recycled wood or waste wood), is more corrosive than virgin wood (forest fuel), because of higher amounts of chlorine and heavy metals. READ MORE
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3. Fatigue life prediction of additively manufactured ductile nickel-based superalloys : Constitutive and crack initiation modelling
Abstract : This dissertation was produced at the Division of Solid Mechanics at Linköping University, and is the final result of a project that included mechanical testing and modelling of an additively manufactured ductile nickel-based superalloy.The main objective of the work presented in this thesis was to investigate and model the cyclic behaviour and the fatigue life behaviour of an additively manufactured ductile nickel-based superalloy, with emphasis on modelling the stabilised material behaviour, by which fatigue life predictions can be based upon. READ MORE
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4. Hot Cracking and Grain Boundary Weaknesses of Nickel - Based Superalloys
Abstract : 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. READ MORE
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5. Oxide Formation and Degradation during Erosion-Corrosion of Iron and Nickel Based Alloys
Abstract : Erosion-corrosion is, in many technical applications, a serious material degradation process caused by dynamic particle/fluid mixtures. Pipes transporting particle containing liquids, jet engines, gas turbines, and fluidised bed combustion (FBC) power plants are examples of systems which are considered to be especially susceptible. READ MORE