Selective Laser Melting of Advanced Metal Alloys for Aerospace Applications

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Selective Laser Melting of Advanced Metal Alloys for Aerospace Applications

Show simple item record Jerrard, Peter George Eveleigh en_US 2012-06-12T15:53:59Z en_US 2013-03-21T11:56:35Z 2011-08-01 en_US
dc.description.abstract Research focused on the selective laser melting (SLM) of stainless steels and aluminium alloys. For steels, the possibility of creating a magnetically graded material was demonstrated as well as the ability to improve consolidation with austenitic and martensitic stainless steel powder mixtures. Stainless Steel/CoCr hybrid samples were also manufactured and tested to investigate the advantages of functionally graded materials (FGMs). Al alloy research began with examining the requirements for successful Al alloy consolidation in SLM and through experimentation it was found that Al alloys with good welding properties were the best choice: pure Al was found to be completely unsuitable. 6061 Al alloy was then used as a base material to manufacture Al-Cu alloy samples. Single layer SLM samples were produced first, which resulted in recognised Al-Cu microstructures forming. Multilayer Al alloy SLM research resulted in the discovery of the theorised ability to manufacture Al-Cu alloy parts with a nanocrystalline Al matrix with dispersed Al2Cu quasicrystals, resulting in a material comparable to a metal matrix composite that showed excellent corrosion resistance and compressive strength. Finally, a demonstration part was made to test the capability of the SLM process producing an aerospace type geometry using a customised Al alloy. Observations during manufacture and post process analysis showed that Al alloys were susceptible to changes in mechanical properties due to the geometry of the manufactured part. en_GB
dc.identifier.uri en_US
dc.language.iso en en_GB
dc.publisher University of Exeter en_GB
dc.rights.embargoreason To allow publication of the research elsewhere en_GB
dc.subject selective laser melting en_GB
dc.subject steel en_GB
dc.subject aluminium alloy en_GB
dc.subject magnetism en_GB
dc.subject microstructure en_GB
dc.subject design en_GB
dc.title Selective Laser Melting of Advanced Metal Alloys for Aerospace Applications en_GB
dc.type Thesis or dissertation en_GB 2013-12-31T04:00:14Z
dc.contributor.advisor Hao, Liang en_US
dc.publisher.department College of Engineering, Mathematics and Physical Sciences en_GB
dc.type.degreetitle PhD in Engineering en_GB
dc.type.qualificationlevel Doctoral en_GB
dc.type.qualificationname PhD en_GB

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