Microstructure, mechanical performance, and corrosion behavior of additively manufactured aluminum alloy 5083 with 0.7 and 1.0 wt% Zr addition

Zhou, Le; Hyer, Holden; Chang, Jinfa; Mehta, Abhishek; Huynh, Thinh; Yang, Yang; Sohn, Yong Ho

doi:10.1016/j.msea.2021.141679

Cited by 40 publications

(8 citation statements)

References 28 publications

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“…By plotting the data in the Mg, Si-space (see Figure 4), those areas were clearly reviled. The none printable composition space could approximatively be demarcated by Si+Mg>0.7wt% and Si+2/3Mg<4wt%, this agreed well with data reported in the literature [7,4,10,11,12,13,14]. Observation from cross-sections (see Figure 5, and Figure 6) could nearly confirmed the printability boarder observed from surface cracks.…”

Section: Resultssupporting

confidence: 89%

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: Resultssupporting

confidence: 89%

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon¹,

Skjervold²,

Moverare³

2023

Preprint

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“…Often, LPBF parameters with near-full density are most desired, so the density of the cube samples is measured by immersion density, x-ray tomography, optical analysis, or a pycnometer. A curve such as the one shown in Figure 5(c) can then be generated, which typically follows a common behavior in which using lower ED will result in irregular pores due to a lack of fusion [14,15]. There will be some middle ground in laser energy in which near-full density can be achieved, but as the laser energy continues to increase past the optimum region, more keyholes will be created, and boiling of the melt will occur, producing spherical pores [14,15].…”

Section: Laser Powder Bed Fusionmentioning

confidence: 99%

Status of Additive Manufacturing Capabilities for Processing Refractory Alloys Under the Mo-99 Program

Hyer

2022

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The enriched 100 Mo target, denoted as aMo, that Northstar Medical Radioisotopes is developing to produce 99 Mo from an accelerator-based method is a disk-type geometry with a 0.5-0.715 mm thickness and a 29 mm outer diameter. A press and sinter method was adopted to fabricate these samples from aMo powder feedstock. Inherent porosity from the press and sinter method makes the disks more easily dissolvable during 99 Mo postprocessing. However, the disk-type geometry will be subject to thermal stresses due to temperature variations once the geometry is in line with the accelerated electron beam, causing warping and possible failure. Additive manufacturing (AM) processes such as laser powder bed fusion (LPBF) enable the manufacturing of custom, complex geometries that may otherwise be difficult to produce with more conventional methods (e.g., press and sinter approach). Therefore, the National Nuclear Security Administration's Molybdenum-99 Program invested in developing an AM facility dedicated to processing and printing refractory powders. This report details the LPBF process, how irregular refractory powder can be prepared for LPBF, and the equipment that is available to support the program.

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“…There are several near-eutectic Al–Si alloy grades suitable for LPBF and available on the market. These materials display an excellent fluidity, high thermal conductivity, low coefficient of thermal expansion (CTE) and outstanding castability [ 29 ]. Hypoeutectic Al–Si (7–12 wt.%)-Mg (>1 wt.%) alloys [ 10 , 30 ] possess the largest share among Al alloys applicable for LPBF process.…”

Section: Introductionmentioning

confidence: 99%

Laser Powder-Bed Fusion of Ceramic Particulate Reinforced Aluminum Alloys: A Review

Minasyan

Hussainova

2022

Materials

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Aluminum (Al) and its alloys are the second most used materials spanning industrial applications in automotive, aircraft and aerospace industries. To comply with the industrial demand for high-performance aluminum alloys with superb mechanical properties, one promising approach is reinforcement with ceramic particulates. Laser powder-bed fusion (LPBF) of Al alloy powders provides vast freedom in design and allows fabrication of aluminum matrix composites with significant grain refinement and textureless microstructure. This review paper evaluates the trends in in situ and ex situ reinforcement of aluminum alloys by ceramic particulates, while analyzing their effect on the material properties and process parameters. The current research efforts are mainly directed toward additives for grain refinement to improve the mechanical performance of the printed parts. Reinforcing additives has been demonstrated as a promising perspective for the industrialization of Al-based composites produced via laser powder-bed fusion technique. In this review, attention is mainly paid to borides (TiB2, LaB6, CaB6), carbides (TiC, SiC), nitrides (TiN, Si3N4, BN, AlN), hybrid additives and their effect on the densification, grain refinement and mechanical behavior of the LPBF-produced composites.

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Microstructure, mechanical performance, and corrosion behavior of additively manufactured aluminum alloy 5083 with 0.7 and 1.0 wt% Zr addition

Cited by 40 publications

References 28 publications

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Status of Additive Manufacturing Capabilities for Processing Refractory Alloys Under the Mo-99 Program

Laser Powder-Bed Fusion of Ceramic Particulate Reinforced Aluminum Alloys: A Review

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