Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion
Laser powder bed fusion (LPBF) can help to overcome two challenges occurring by casting of metastable Al alloys: (1) the high amount of casting defects and (2) the limited part size while maintaining rapid solidification of the whole cross-section. In this study, an Al92Mn6Ce2 alloy was processed cr...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Additive Manufacturing Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772369021000177 |
| _version_ | 1819177706461331456 |
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| author | Katharina Gabrysiak Tobias Gustmann Jens Freudenberger Kai Neufeld Lars Giebeler Christoph Leyens Uta Kühn |
| author_facet | Katharina Gabrysiak Tobias Gustmann Jens Freudenberger Kai Neufeld Lars Giebeler Christoph Leyens Uta Kühn |
| author_sort | Katharina Gabrysiak |
| collection | DOAJ |
| description | Laser powder bed fusion (LPBF) can help to overcome two challenges occurring by casting of metastable Al alloys: (1) the high amount of casting defects and (2) the limited part size while maintaining rapid solidification of the whole cross-section. In this study, an Al92Mn6Ce2 alloy was processed crack-free without baseplate heating by LPBF. The high cooling rate during fabrication has a significant impact on the microstructure, which was characterized by SEM, TEM and XRD. The processing through LPBF causes a high amount and a strong refinement of the intermetallic Al20Mn2Ce precipitates. This leads, compared to suction-cast specimens, to a higher hardness (180 HV 5) and a higher tolerable compressive stress (>1200 MPa) associated with a pronounced plasticity without failure up to a strain of 40%. The extraordinary mechanical properties of additively manufactured Al92Mn6Ce2 can extend the possibilities of producing novel LPBF lightweight structures for potential applications under harsh conditions. |
| first_indexed | 2024-12-22T21:30:55Z |
| format | Article |
| id | doaj.art-b2cd512ab34145af9b2f96d2980975a3 |
| institution | Directory Open Access Journal |
| issn | 2772-3690 |
| language | English |
| last_indexed | 2024-12-22T21:30:55Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Additive Manufacturing Letters |
| spelling | doaj.art-b2cd512ab34145af9b2f96d2980975a32022-12-21T18:11:56ZengElsevierAdditive Manufacturing Letters2772-36902021-12-011100017Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusionKatharina Gabrysiak0Tobias Gustmann1Jens Freudenberger2Kai Neufeld3Lars Giebeler4Christoph Leyens5Uta Kühn6Institut of Complex Materials, Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, Germany; Corresponding author.Institut of Complex Materials, Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, GermanyInstitut of Complex Materials, Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, GermanyInstitut of Complex Materials, Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, GermanyInstitut of Complex Materials, Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, GermanyInstitute of Materials Science, TU Dresden, Helmholtzstr. 7, 01069 Dresden, Germany; Fraunhofer Institute for Material and Beam Technology (Fraunhofer IWS), Winterbergstr. 28, 01277 Dresden, GermanyInstitut of Complex Materials, Leibniz IFW Dresden, Helmholtzstr. 20, 01069 Dresden, GermanyLaser powder bed fusion (LPBF) can help to overcome two challenges occurring by casting of metastable Al alloys: (1) the high amount of casting defects and (2) the limited part size while maintaining rapid solidification of the whole cross-section. In this study, an Al92Mn6Ce2 alloy was processed crack-free without baseplate heating by LPBF. The high cooling rate during fabrication has a significant impact on the microstructure, which was characterized by SEM, TEM and XRD. The processing through LPBF causes a high amount and a strong refinement of the intermetallic Al20Mn2Ce precipitates. This leads, compared to suction-cast specimens, to a higher hardness (180 HV 5) and a higher tolerable compressive stress (>1200 MPa) associated with a pronounced plasticity without failure up to a strain of 40%. The extraordinary mechanical properties of additively manufactured Al92Mn6Ce2 can extend the possibilities of producing novel LPBF lightweight structures for potential applications under harsh conditions.http://www.sciencedirect.com/science/article/pii/S2772369021000177Metastable aluminum alloysRapid solidificationLaser powder bed fusionMechanical characterizationAl20Mn2Ce |
| spellingShingle | Katharina Gabrysiak Tobias Gustmann Jens Freudenberger Kai Neufeld Lars Giebeler Christoph Leyens Uta Kühn Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion Additive Manufacturing Letters Metastable aluminum alloys Rapid solidification Laser powder bed fusion Mechanical characterization Al20Mn2Ce |
| title | Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion |
| title_full | Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion |
| title_fullStr | Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion |
| title_full_unstemmed | Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion |
| title_short | Development and characterization of a metastable Al-Mn-Ce alloy produced by laser powder bed fusion |
| title_sort | development and characterization of a metastable al mn ce alloy produced by laser powder bed fusion |
| topic | Metastable aluminum alloys Rapid solidification Laser powder bed fusion Mechanical characterization Al20Mn2Ce |
| url | http://www.sciencedirect.com/science/article/pii/S2772369021000177 |
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