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    Item type:Publication, Access status: with files ,
    Qualification of SLM : additive manufacturing for aluminium
    (2020-01)
    Schmidtke, Katja
    ;
    Emmelmann, Claus
    The present Thesis "Qualification of SLM - Additive Manufacturing for Aluminium Alloys" considers the suitability of two aluminum alloys for the additive manufacturing technique Selective Laserbeam Melting (SLM). High cooling rates can be realised in SLM which allow the use of the tailored Al-alloy options Scalmalloy and SilmagAl. The investigations deepen the scholarly understanding of processing both alloys in SLM. Different aspects of the process chain are described, analysed and discussed with regard to define powder and material specifications for aerospace applications. Main process influencing powder characteristics are identified and characterising techniques are discussed. The additive manufactured material of both alloys is comprehensively investigated regarding mechanical and physical properties. As result, different processing routes are identified which aim to meet the final proposed material specification for principle structural elements (PSE) and non-principle structural elements (non-PSE) in aerospace qualifications.
    Publicationtype: Doctoral Thesis
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    Item type:Publication, Access status: with files ,
    Process and mechanical properties: Applicability of a scandium modified Al-alloy for laser additive manufacturing
    (Elsevier, 2011)
    Schmidtke, Katja
    ;
    Palm, Frank
    ;
    Hawkins, A.
    ;
    Emmelmann, Claus
    The applicability of an aluminium alloy containing scandium for laser additive manufacturing (LAM) is considered. Modified aluminium alloys with a scandium content beyond the eutectic point offer great potential to become a high prioritized aerospace material. Depending on other alloying elements like magnesium or zirconium, strongly required weight reduction, corrosion resistance and improved strength properties of metallic light weight alloys can be achieved. The development, production and testing of parts built up by a laser powder bed process will be presented with regard to the qualification of the new material concept "ScalmalloyRP®" for laser additive manufacturing.
    Publicationtype: Journal Article
    Scopus© Citations 284  291  554