Search for dissertations about: "pore in powder metallurgy of steel"
Showing result 1 - 5 of 7 swedish dissertations containing the words pore in powder metallurgy of steel.
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1. Key Aspects of Sintering Powder Metallurgy Steel Prealloyed with Chromium and Manganese
Abstract : The powder metallurgy (PM) process is a cost efficient near net-shape technology suitable for sustainable manufacturing of structural steel components. A drawback with the PM technology is the difficulty to use oxidation sensitive alloying elements, such as Cr and Mn. READ MORE
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2. Novel approaches for achieving full density powder metallurgy steels
Abstract : Powder metallurgy (PM) is one of the most resource-efficient methods for manufacturing structural components with complex shapes. The utilisation of the metal powder to shape the components allows to minimise material waste and increase energy efficiency. READ MORE
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3. Increased Productivity of Ferrous Alloys Produced by Powder Bed Fusion - Laser Beam
Abstract : Low production speeds limit wider adoption of powder bed fusion – laser beam (PBF-LB) in cost sensitive industries as it correlates directly with high production costs. The main process parameters such as scan speed, hatch distance and layer thickness can be scaled up to increase build speed, but it often comes at a trade off in lower quality, i. READ MORE
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4. Contact fatigue and crack propagation studies of sintered PM steel
Abstract : Gears made of PM steel are of interest for the automotive industry because from the press/sinter route, complex geometries can be produced to near net shape with only a few processing steps while keeping the material and energy usage at a minimum. However, the PM steels of today have significant performance limitations caused by the inherent porosity which impairs the mechanical properties by acting as stress raisers in the material. READ MORE
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5. Efficiency and wear properties of spur gears made of powder metallurgy materials
Abstract : Powder metallurgy (PM) is usually used in manufacturing parts with complex geometries, such as gears and structural parts. The main attractions of PM are the high rate of material utilization, environmental friendliness of production, economic advantages (especially for complex geometries), and possibility of obtaining lighter components. READ MORE