Großmann, Alexander ; Mölleney, Jan ; Frölich, Tilman ; Merschroth, Holger ; Felger, Julian ; Weigold, Matthias ; Sielaff, Axel ; Mittelstedt, Christian (2021)
Dimensionless process development for lattice structure design in laser powder bed fusion.
In: Materials & Design, 2020, 194
doi: 10.26083/tuprints-00018632
Article, Secondary publication, Publisher's Version
 | There is a more recent version of this item available. |
Abstract
Laser powder bed fusion enables the fabrication of complex components such as thin-walled cellular structures including lattice or honeycomb structures. Numerous manufacturing parameters are involved in the resulting properties of the fabricated component and a material and machine-dependent process window development is necessary to determine a suitable process map. For cellular structures the thickness, which correlates with the process parameters, directly influences the mechanical properties of the component. Thus, dimensionless scaling laws describing the correlation between strut thickness, process parameters, and material properties enable predictive lattice structure design for laser powder bed fusion. This contribution develops material independent dimensionless allometric scaling laws for both single track and contour exposure to enable process-driven design of lattice structures in laser powder bed fusion. The theory derived with dimensional analysis is validated for the powder alloys stainless steel alloy 1.4404, nickel alloy 2.4856, aluminum alloy AlSi10Mg and Scalmalloy AlMgSc. The results can be used for the process-driven design of lattice structures and dense material obtaining high precision in the micrometer range or economic production with high melt pool widths
| Item Type: | Article |
|---|---|
| Erschienen: | 2021 |
| Creators: | Großmann, Alexander ; Mölleney, Jan ; Frölich, Tilman ; Merschroth, Holger ; Felger, Julian ; Weigold, Matthias ; Sielaff, Axel ; Mittelstedt, Christian |
| Type of entry: | Secondary publication |
| Title: | Dimensionless process development for lattice structure design in laser powder bed fusion |
| Language: | English |
| Date: | 2021 |
| Year of primary publication: | 2020 |
| Publisher: | Elsevier |
| Journal or Publication Title: | Materials & Design |
| Volume of the journal: | 194 |
| Collation: | 16 Seiten |
| DOI: | 10.26083/tuprints-00018632 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/18632 |
| Corresponding Links: | |
| Origin: | Secondary publication via sponsored Golden Open Access |
| Abstract: | Laser powder bed fusion enables the fabrication of complex components such as thin-walled cellular structures including lattice or honeycomb structures. Numerous manufacturing parameters are involved in the resulting properties of the fabricated component and a material and machine-dependent process window development is necessary to determine a suitable process map. For cellular structures the thickness, which correlates with the process parameters, directly influences the mechanical properties of the component. Thus, dimensionless scaling laws describing the correlation between strut thickness, process parameters, and material properties enable predictive lattice structure design for laser powder bed fusion. This contribution develops material independent dimensionless allometric scaling laws for both single track and contour exposure to enable process-driven design of lattice structures in laser powder bed fusion. The theory derived with dimensional analysis is validated for the powder alloys stainless steel alloy 1.4404, nickel alloy 2.4856, aluminum alloy AlSi10Mg and Scalmalloy AlMgSc. The results can be used for the process-driven design of lattice structures and dense material obtaining high precision in the micrometer range or economic production with high melt pool widths |
| Status: | Publisher's Version |
| URN: | urn:nbn:de:tuda-tuprints-186323 |
| Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Institute for Lightweight Construction and Design-KluB (2023 renamed in Leichtbau und Strukturmechanik (LSM)) |
| Date Deposited: | 22 Jul 2021 07:37 |
| Last Modified: | 26 Jul 2021 05:22 |
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