The mechanical behavior and microstructure of additively manufactured AlSi10Mg for different material states and loading conditions

Schuch, M.; Hahn, Tom; Bleckmann, Matthias

doi:10.1016/j.msea.2021.141134

Cited by 32 publications

(4 citation statements)

References 36 publications

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“…The current commercially available AlSi10Mg AM alloy is highly recyclable as it does not have any minor alloying elements to promote grain refinement (GF). However, the strength is moderate with Rp0.2 in the range of 300 MPa [1] and therefore its use is limited.…”

Section: Introductionmentioning

confidence: 99%

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon¹,

Skjervold²,

Moverare³

2023

Preprint

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The importance of both recycling and additive manufacturing (AM) is increasing, however there has been a limited focus on development of AM alloys that are recyclably compatible with the larger scrap loops of wrought 5xxx, 6xxx and cast 3xx aluminium alloys. In this work the powder bed fusion (PBF) printability of AlMgSi alloys in the interval of 0-30wt%Mg and 0-4wt%Si is screened experimentally with a high throughput method. This method produces PBF mimicked material by PVD co-sputtering followed by laser remelting. Strong evidence was found for AlMgSi alloys being printable in two different composition ranges; Si+Mg<0.7wt% or for Si+2/3Mg>4wt% when Mg < 3wt% and Si > 3wt%. Increasing the amount of Mg and Si influence the grain structure by introducing fine columnar grains at the melt pool boundary, although the melt pool interior was unaffected. Hardness in as-built state increased with both Mg and Si, alt-hough Si had neglectable effect at low levels of Mg. Both evaporative loss of Mg and the amount of Mg in solid solution increased linearly with the amount of Mg.

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Section: Introductionmentioning

confidence: 99%

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon¹,

Skjervold²,

Moverare³

2023

Preprint

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show abstract

“…The current commercially available AlSi10Mg AM alloy is highly recyclable, as it does not have any minor alloying elements to promote grain refinement (GF). However, the strength is moderate, with R p0.2 in the range of 300 MPa [6,7] and its use is therefore limited. To reach a higher strength in the AlSiMg alloy system, the level of Mg is required to increase, as this will enable higher solid solution hardening and/or precipitation hardening.…”

Section: Introductionmentioning

confidence: 99%

High-Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon

Moverare

2023

Metals

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The importance of both recycling and additive manufacturing (AM) is increasing; however, there has been a limited focus on the development of AM alloys that are compatible in terms of recyclability with the larger scrap loops of wrought 5xxx, 6xxx and cast 3xx aluminium alloys. In this work, the powder bed fusion (PBF) printability of AlMgSi alloys in the interval of 0–30 wt% Mg and 0–4 wt% Si is screened experimentally with a high-throughput method. This method produces PBF-mimicked material by PVD co-sputtering, followed by laser remelting. Strong evidence was found for AlMgSi alloys being printable within two different composition ranges: Si + Mg < 0.7 wt% or for Si + 2/3 Mg > 4 wt% when Mg < 3 wt% and Si > 3 wt%. Increasing the amount of Mg and Si influences the grain structure by introducing fine columnar grains at the melt pool boundary, although the melt pool interior was unaffected. Hardness in an as-built state increased with both Mg and Si, although Si had a neglectable effect at low levels of Mg. Both the evaporative loss of Mg and the amount of Mg in solid solution increased linearly with the amount of Mg.

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“…These characteristics combined with process-related emerged pores and the brittleness of AlSi10Mg lead to low fatigue strength and therefore low persistence. These drawbacks can be improved by using thermal post-processing like the widespread T6 heat treatment, which is preferred for high strength applications in contrast to T5 that offers higher ductility ( Schuch et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Hardness of Unconventional Geometrical Features for Laser Powder Bed Fused AlSi10Mg

et al. 2022

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The adoption of Design for Additive Manufacturing (DfAM) practices brought new industrial components embedding unconventional shapes such as lattice structures or freeform surfaces resulting from topological optimisations. As a drawback of design freedom, designers need to use thermal post-processing to achieve homogeneous properties in metal 3D printing. This contribution analyses the effect of T6-like heat treatment on the hardness of a complex component. Hardness values are reported along with good design practices for effective thermal post-processing to complement the DfAM knowledge base.

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The mechanical behavior and microstructure of additively manufactured AlSi10Mg for different material states and loading conditions

Cited by 32 publications

References 36 publications

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

High-Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Effect of Heat Treatment on the Hardness of Unconventional Geometrical Features for Laser Powder Bed Fused AlSi10Mg

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