Parameter study of an Al–Cr–Mo–Sc–Zr alloy processed by laser powder bed fusion reaching high build rates
- Market availability of aluminum alloys for laser powder bed fusion (L-PBF) is still highly limited in comparison to conventional manufacturing processes. The demand for high-strength but inexpensive alloys specifically designed for L-PBF is high. This demand has led to research on a variety of adapted conventional alloys which are still limited to utilize the full potential of L-PBF. Scalmalloy® (Al–Mg–Sc–Zr) satisfies the demand for high-strength L-PBF-alloys but needs a high energy input and has troubles with evaporation of Mg. Scancromal® (Al–Cr–Sc–Zr) is a novel alloying system for L-PBF and was first introduced in 2019 with the possibility of higher build rates and comparable strengths to Scalmalloy®. In this paper, a more economic low Sc-containing version of Scancromal® is presented. A parameter study was performed for 100 μm layer thickness reaching high build rates of about 47 cm3 h−1 . Hardness tests for different parameters were carried out and showed a stable process window with a hardness comparable to AlSi10Mg.Market availability of aluminum alloys for laser powder bed fusion (L-PBF) is still highly limited in comparison to conventional manufacturing processes. The demand for high-strength but inexpensive alloys specifically designed for L-PBF is high. This demand has led to research on a variety of adapted conventional alloys which are still limited to utilize the full potential of L-PBF. Scalmalloy® (Al–Mg–Sc–Zr) satisfies the demand for high-strength L-PBF-alloys but needs a high energy input and has troubles with evaporation of Mg. Scancromal® (Al–Cr–Sc–Zr) is a novel alloying system for L-PBF and was first introduced in 2019 with the possibility of higher build rates and comparable strengths to Scalmalloy®. In this paper, a more economic low Sc-containing version of Scancromal® is presented. A parameter study was performed for 100 μm layer thickness reaching high build rates of about 47 cm3 h−1 . Hardness tests for different parameters were carried out and showed a stable process window with a hardness comparable to AlSi10Mg. Additionally, two-dimensional multilayer process simulations showed a potential for increasing the layer thickness to 150 μm and therefore a significant increase in build rate of up to 70 cm3 h−1 highlighting the high productivity potential of Al–Cr alloys for L-PBF.…
Author: | Barbara AgricolaORCiD, Claas BierwischORCiD, Frank Palm, Eric A. JägleORCiD, Annegret KerschenlohrORCiD |
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Language: | English |
Document Type: | Article |
Year of first Publication: | 2024 |
published in (English): | Progress in Additive Manufacturing |
Publisher: | Springer |
Place of publication: | Cham |
ISSN: | 2363-9520 |
ISSN: | 2363-9512 |
Pages: | 12 |
Review: | peer-review |
Open Access: | ja |
Version: | published |
URN: | urn:nbn:de:bvb:573-48567 |
Related Identifier: | https://doi.org/10.1007/s40964-024-00627-8 |
Faculties / Institutes / Organizations: | Fakultät Maschinenbau |
Licence (German): | ![]() |
Release Date: | 2024/07/08 |