- The effect of support structure and of removal from the base plate on the residual stress state in selective laser melted IN718 parts was studied by means of synchrotron X-ray diffraction. The residual stresses in subsurface region of two elongated prisms in as-built condition and after removal from the base plate were determined. One sample was directly built on a base plate and another one on a support structure. Also, the distortion on the top surface due to stress release was measured by contact profilometry. High tensile residual stress values were found, with pronounced stress gradient along the hatching direction. In the sample on support, stress redistribution took place after removal from the base plate, as opposed to simple stress relaxation for the sample without support. The sample on support structure showed larger distortion compared to sample without support. We conclude that the use of a support decreases stress values but stress-relieving heat treatments are stillThe effect of support structure and of removal from the base plate on the residual stress state in selective laser melted IN718 parts was studied by means of synchrotron X-ray diffraction. The residual stresses in subsurface region of two elongated prisms in as-built condition and after removal from the base plate were determined. One sample was directly built on a base plate and another one on a support structure. Also, the distortion on the top surface due to stress release was measured by contact profilometry. High tensile residual stress values were found, with pronounced stress gradient along the hatching direction. In the sample on support, stress redistribution took place after removal from the base plate, as opposed to simple stress relaxation for the sample without support. The sample on support structure showed larger distortion compared to sample without support. We conclude that the use of a support decreases stress values but stress-relieving heat treatments are still needed.…
MetadatenAutor*innen: | Tatiana MishurovaORCiD, Sandra Cabeza, Tobias Thiede, Naresh Nadammal, Arne KrommORCiD, Manuela Klaus, Christoph Genzel, Christoph Haberland, Giovanni BrunoORCiD |
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Dokumenttyp: | Zeitschriftenartikel |
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Veröffentlichungsform: | Verlagsliteratur |
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Sprache: | Englisch |
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Titel des übergeordneten Werkes (Englisch): | Metallurgical and materials transactions A |
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Jahr der Erstveröffentlichung: | 2018 |
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Organisationseinheit der BAM: | 5 Werkstofftechnik |
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| 5 Werkstofftechnik / 5.0 Abteilungsleitung und andere |
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| 8 Zerstörungsfreie Prüfung |
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| 8 Zerstörungsfreie Prüfung / 8.5 Röntgenbildgebung |
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| 9 Komponentensicherheit |
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| 9 Komponentensicherheit / 9.4 Integrität von Schweißverbindungen |
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Verlag: | Springer Sciences & Business Media |
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Verlagsort: | New York, NY |
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Jahrgang/Band: | 49A |
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Ausgabe/Heft: | 7 |
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Erste Seite: | 3038 |
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Letzte Seite: | 3046 |
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DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
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Freie Schlagwörter: | Additive manufacturing; IN718; Residual stress; SLM; Synchrotron X-ray diffraction |
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Themenfelder/Aktivitätsfelder der BAM: | Material |
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| Material / Additive Fertigung |
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| Material / Degradation von Werkstoffen |
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DOI: | 10.1007/s11661-018-4653-9 |
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ISSN: | 1073-5623 |
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Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
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Datum der Freischaltung: | 05.06.2018 |
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Referierte Publikation: | Ja |
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Datum der Eintragung als referierte Publikation: | 21.06.2018 |
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