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Casting repair and Surface Modification of Aluminum Alloys using Friction Stir Processing (FSP)
University West, Department of Engineering Science, Division of Industrial Engineering and Management, Electrical- and Mechanical Engineering.
2021 (English)Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This thesis investigates using friction stir welding to repair common surface defects found in aluminum-silicon sand castings. Wherein, the effect of welding parameters: weld RPM, weld speed, and number of weld passes, were evaluated using hardness, porosity density, welding temperature, microstructure refinement as metrics. Therefrom, the results strongly suggest friction stir welding: reduces porosity size, reduces porosity density in a specific area, increases average hardness, improves hardness uniformity, increases surface roughness, redistributes microstructure features in a manner that theoretically improves strength, and maintains a welding temperature less than 660 degrees Celsius.

Place, publisher, year, edition, pages
2021. , p. 17
Keywords [en]
Friction Stir, FSP, Aluminium Alloys, Casting Repair
National Category
Mechanical Engineering Production Engineering, Human Work Science and Ergonomics
Identifiers
URN: urn:nbn:se:hv:diva-16675Local ID: EXP800OAI: oai:DiVA.org:hv-16675DiVA, id: diva2:1580334
Subject / course
Mechanical engineering
Educational program
Produktionsteknik, magister
Supervisors
Examiners
Available from: 2021-07-21 Created: 2021-07-14 Last updated: 2021-09-15Bibliographically approved

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