Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion
Only a limited aluminium material palette is currently available for L-PBF processing, especially for high strength aluminium alloy. Unmodified Al7075 suffers from hot cracking making it nearly impossible to process by L-PBF. Adding some grain refiner to Al7075 solves this issue of hot cracking. How...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Additive Manufacturing Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772369024000616 |
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| author | Nicolas Nothomb Ignacio Rodriguez-Barber María Teresa Pérez-Prado Norberto Jimenez Mena Grzegorz Pyka Aude Simar |
| author_facet | Nicolas Nothomb Ignacio Rodriguez-Barber María Teresa Pérez-Prado Norberto Jimenez Mena Grzegorz Pyka Aude Simar |
| author_sort | Nicolas Nothomb |
| collection | DOAJ |
| description | Only a limited aluminium material palette is currently available for L-PBF processing, especially for high strength aluminium alloy. Unmodified Al7075 suffers from hot cracking making it nearly impossible to process by L-PBF. Adding some grain refiner to Al7075 solves this issue of hot cracking. However, this alloy still presents difficulties to be processed with densities above 99.5%. In this study, the unconventional pre-sintering scanning strategy is applied to process 99.9% density Al7075+1.8%Zr. For this scanning strategy, each layer is scanned twice with different power, i.e. it is first scanned with half the power selected for the second scan. This specific strategy remelts potential defect generated by the first scan and reduces lack of fusion pores. These two phenomena lead to high density L-PBF Al7075+1.8%Zr and pave the way to higher densities for high strength aluminium alloys. |
| format | Article |
| id | doaj-art-8d240c8c9c724efcbdc65b397578df8c |
| institution | DOAJ |
| issn | 2772-3690 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Additive Manufacturing Letters |
| spelling | doaj-art-8d240c8c9c724efcbdc65b397578df8c2025-08-20T02:50:26ZengElsevierAdditive Manufacturing Letters2772-36902024-12-011110025310.1016/j.addlet.2024.100253Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusionNicolas Nothomb0Ignacio Rodriguez-Barber1María Teresa Pérez-Prado2Norberto Jimenez Mena3Grzegorz Pyka4Aude Simar5UCLouvain, IMMC (Institute of Mechanics, Materials and Civil Engineering), Louvain-la-Neuve, Belgium; Corresponding author.IMDEA Materials Institute, Calle Eric Kandel, 2, 28906, Getafe, Madrid, SpainIMDEA Materials Institute, Calle Eric Kandel, 2, 28906, Getafe, Madrid, SpainCRM group, Avenue du bois St. Jean 21, 4000, Liège, BelgiumUCLouvain, IMMC (Institute of Mechanics, Materials and Civil Engineering), Louvain-la-Neuve, BelgiumUCLouvain, IMMC (Institute of Mechanics, Materials and Civil Engineering), Louvain-la-Neuve, BelgiumOnly a limited aluminium material palette is currently available for L-PBF processing, especially for high strength aluminium alloy. Unmodified Al7075 suffers from hot cracking making it nearly impossible to process by L-PBF. Adding some grain refiner to Al7075 solves this issue of hot cracking. However, this alloy still presents difficulties to be processed with densities above 99.5%. In this study, the unconventional pre-sintering scanning strategy is applied to process 99.9% density Al7075+1.8%Zr. For this scanning strategy, each layer is scanned twice with different power, i.e. it is first scanned with half the power selected for the second scan. This specific strategy remelts potential defect generated by the first scan and reduces lack of fusion pores. These two phenomena lead to high density L-PBF Al7075+1.8%Zr and pave the way to higher densities for high strength aluminium alloys.http://www.sciencedirect.com/science/article/pii/S2772369024000616Additive manufacturingL-PBFAl7075Pre-sintering |
| spellingShingle | Nicolas Nothomb Ignacio Rodriguez-Barber María Teresa Pérez-Prado Norberto Jimenez Mena Grzegorz Pyka Aude Simar Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion Additive Manufacturing Letters Additive manufacturing L-PBF Al7075 Pre-sintering |
| title | Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion |
| title_full | Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion |
| title_fullStr | Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion |
| title_full_unstemmed | Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion |
| title_short | Understanding the effect of pre-sintering scanning strategy on the relative density of Zr-modified Al7075 processed by laser powder bed fusion |
| title_sort | understanding the effect of pre sintering scanning strategy on the relative density of zr modified al7075 processed by laser powder bed fusion |
| topic | Additive manufacturing L-PBF Al7075 Pre-sintering |
| url | http://www.sciencedirect.com/science/article/pii/S2772369024000616 |
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