Design for material properties of additively manufactured metals using topology optimization
In metal Additive Manufacturing (AM), the deposited material is subjected to a series of heating and cooling cycles. The locally occurring temperature extremes and cooling rates determine solid-state phase fractions, material microstructure, texture, and ultimately the local material properties. As...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523008031 |
| _version_ | 1827687110278119424 |
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| author | Vibhas Mishra Can Ayas Matthijs Langelaar |
| author_facet | Vibhas Mishra Can Ayas Matthijs Langelaar |
| author_sort | Vibhas Mishra |
| collection | DOAJ |
| description | In metal Additive Manufacturing (AM), the deposited material is subjected to a series of heating and cooling cycles. The locally occurring temperature extremes and cooling rates determine solid-state phase fractions, material microstructure, texture, and ultimately the local material properties. As the shape of a part determines the local thermal history during AM, this offers an opportunity to influence these material properties through design. In this paper, we present a way to obtain desired properties by controlling the local thermal history. This is achieved through topology optimization of the printed part while considering its entire transient thermal history. As an example of this approach, this work focuses on high strength low alloy steels, where resulting phase fractions significantly influence mechanical properties such as yield strength and ductility. These solid-state phase fractions depend on cooling rates in a particular critical temperature range. The phase composition and hence the local yield strength in target regions can be controlled by constraining the cooling time in this range. Numerical examples illustrate the capability of the proposed approach in adapting part designs to achieve various desired material properties. |
| first_indexed | 2024-03-10T09:28:01Z |
| format | Article |
| id | doaj.art-df80c888b8484a5f9a343df5ba3e0661 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-10T09:28:01Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-df80c888b8484a5f9a343df5ba3e06612023-11-22T04:46:18ZengElsevierMaterials & Design0264-12752023-11-01235112388Design for material properties of additively manufactured metals using topology optimizationVibhas Mishra0Can Ayas1Matthijs Langelaar2Corresponding author.; Mechanical, Maritime and Materials Engineering, Delft University of Technology, Mekelweg 2, Delft, 2628CD, Zuid Holland, the NetherlandsMechanical, Maritime and Materials Engineering, Delft University of Technology, Mekelweg 2, Delft, 2628CD, Zuid Holland, the NetherlandsMechanical, Maritime and Materials Engineering, Delft University of Technology, Mekelweg 2, Delft, 2628CD, Zuid Holland, the NetherlandsIn metal Additive Manufacturing (AM), the deposited material is subjected to a series of heating and cooling cycles. The locally occurring temperature extremes and cooling rates determine solid-state phase fractions, material microstructure, texture, and ultimately the local material properties. As the shape of a part determines the local thermal history during AM, this offers an opportunity to influence these material properties through design. In this paper, we present a way to obtain desired properties by controlling the local thermal history. This is achieved through topology optimization of the printed part while considering its entire transient thermal history. As an example of this approach, this work focuses on high strength low alloy steels, where resulting phase fractions significantly influence mechanical properties such as yield strength and ductility. These solid-state phase fractions depend on cooling rates in a particular critical temperature range. The phase composition and hence the local yield strength in target regions can be controlled by constraining the cooling time in this range. Numerical examples illustrate the capability of the proposed approach in adapting part designs to achieve various desired material properties.http://www.sciencedirect.com/science/article/pii/S0264127523008031Topology optimizationMicrostructureAdditive ManufacturingCooling rate controlProperty optimizationHSLA steel |
| spellingShingle | Vibhas Mishra Can Ayas Matthijs Langelaar Design for material properties of additively manufactured metals using topology optimization Materials & Design Topology optimization Microstructure Additive Manufacturing Cooling rate control Property optimization HSLA steel |
| title | Design for material properties of additively manufactured metals using topology optimization |
| title_full | Design for material properties of additively manufactured metals using topology optimization |
| title_fullStr | Design for material properties of additively manufactured metals using topology optimization |
| title_full_unstemmed | Design for material properties of additively manufactured metals using topology optimization |
| title_short | Design for material properties of additively manufactured metals using topology optimization |
| title_sort | design for material properties of additively manufactured metals using topology optimization |
| topic | Topology optimization Microstructure Additive Manufacturing Cooling rate control Property optimization HSLA steel |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523008031 |
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