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Alloy modification for additive manufactured Ni alloy components Part I: Effect on microstructure and hardness

  • Alloy 36 (1.3912), also known as “Invar”, is an alloy with 36% nickel. The alloy has a remarkably low thermal expansion coefficient in certain temperature ranges. Therefore, it is used in applications in which dimensional stability is critical, such as moulding tools for composite materials in aerospace and automotive applications. Moreover, increasingly complex structures and the optimisation of resource efficiency also require additive manufacturing steps for the production or repair of components. Additively manufactured components have a heterogeneous microstructure and anisotropic mechanical properties. In part I of this investigation, the initial alloy 36 is modified with the elements Ti, Zr and Hf up to a maximum of 0.33 wt.-%. The influence of the modification elements on the microstructure as well as on the hardness of the AM components is examined. Part II focusses on the effect of the alloy modifications on machinability as well as on the surface integrity ofAlloy 36 (1.3912), also known as “Invar”, is an alloy with 36% nickel. The alloy has a remarkably low thermal expansion coefficient in certain temperature ranges. Therefore, it is used in applications in which dimensional stability is critical, such as moulding tools for composite materials in aerospace and automotive applications. Moreover, increasingly complex structures and the optimisation of resource efficiency also require additive manufacturing steps for the production or repair of components. Additively manufactured components have a heterogeneous microstructure and anisotropic mechanical properties. In part I of this investigation, the initial alloy 36 is modified with the elements Ti, Zr and Hf up to a maximum of 0.33 wt.-%. The influence of the modification elements on the microstructure as well as on the hardness of the AM components is examined. Part II focusses on the effect of the alloy modifications on machinability as well as on the surface integrity of plasma-transferred-arc-welded (PTA) and finish milled invar components. The results show that PTA welding cause numerous finely distributed precipitates with high silicon content.zeige mehrzeige weniger

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  • IIW_22_C-II-A-407-2022_Annual_Assembly_Vortrag_Eissel_Alloy_modification_PartI.pdf
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Metadaten
Autor*innen:A. Eissel
Koautor*innen:Lorenz Engelking, K. Treutler, Dirk Schröpfer, V. Wesling, Thomas Kannengießer
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2022
Organisationseinheit der BAM:9 Komponentensicherheit
9 Komponentensicherheit / 9.2 Versuchsanlagen und Prüftechnik
9 Komponentensicherheit / 9.4 Integrität von Schweißverbindungen
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Angewandte Physik
Freie Schlagwörter:Additive manufacturing; Alloy 36; Alloy modification
Themenfelder/Aktivitätsfelder der BAM:Energie
Material
Material / Degradation von Werkstoffen
Veranstaltung:75th IIW Annual Assembly
Veranstaltungsort:Tokyo, Japan
Beginndatum der Veranstaltung:17.07.2022
Enddatum der Veranstaltung:22.07.2022
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:03.08.2022
Referierte Publikation:Nein
Eingeladener Vortrag:Nein
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