Search for dissertations about: "nitriding"
Showing result 1 - 5 of 17 swedish dissertations containing the word nitriding.
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1. Mechanical properties and microstructure of laser sintered and starch consolidated iron-based powders
Abstract : In powder metallurgy research field, Direct Metal Laser Sintering (DMLS) and Metal Powder Starch Consolidation (MPSC) are relatively new rapid forming techniques to fabricate complex and near net-shaped components. The working principles of DMLS are to melt and fuse metal powder layer by layer in computer controlled systems to pile up components like three dimensional printing. READ MORE
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2. Internal oxidation processing : New alloys and new simulation techniques
Abstract : Nitriding and oxidising treatments of alloys for toolingpurposes have been investigated both experimentally andtheoretically. Specimens prepared by a combination of differentprocessing steps are investigated by light-optical, scanningand transmission electron microscopy and hardness measurments. READ MORE
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3. Secondary hardening in some low-chromium hot-work tool steels
Abstract : Low-chromium hot-work tool steels combine good heat conductivity with excellent tempering resistance. This property combination has made these steels ideal for die casting and extrusion. READ MORE
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4. Low-temperature carburizing/nitriding of austenitic stainless steels - Influence of alloy composition on microstructure and properties
Abstract : Austenitic stainless steels are among the most used materials in applications where corrosion resistance is important, as the food, pharmaceutical, chemical, oil and gas industries. However, low hardness and poor tribological properties is often an obstacle for their applicability. READ MORE
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5. Local structure and composition : in additively manufactured bulk metallic glasses and composites
Abstract : Additive manufacturing enables the production of complex multi-material geometries and bulk metallic glass parts beyond their critical casting thickness. The local modification of structure, composition, and properties is explored in this thesis with the aim to design novel composite materials and functional gradients. READ MORE