A comparative investigation on the microstructure and mechanical properties of additively manufactured aluminum alloys

Muhammad, Muztahid; Nezhadfar, P.D.; Thompson, Spencer; Saharan, Ankit; Phan, Nam; Shamsaei, Nima

doi:10.1016/j.ijfatigue.2021.106165

Cited by 77 publications

(35 citation statements)

References 44 publications

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“…The measured mechanical properties of the LFP-fabricated specimens are compared with the mechanical properties of parts fabricated by the L-PBF process and the DED process, two of the most popular LAM processes (Muhammad et al , 2021). Both L-PBF and DED processes use metal powder as the feedstock to fabricate metal parts, while the LFP process uses metal foil as the feedstock.…”

Section: Resultsmentioning

confidence: 99%

Development and experimental study of an automated laser-foil-printing additive manufacturing system

Hung

Turk

Sehhat

et al. 2022

RPJ

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Purpose This paper aims to present the development and experimental study of a fully automated system using a novel laser additive manufacturing technology called laser foil printing (LFP), to fabricate metal parts layer by layer. The mechanical properties of parts fabricated with this novel system are compared with those of comparable methodologies to emphasize the suitability of this process. Design/methodology/approach Test specimens and parts with different geometries were fabricated from 304L stainless steel foil using an automated LFP system. The dimensions of the fabricated parts were measured, and the mechanical properties of the test specimens were characterized in terms of mechanical strength and elongation. Findings The properties of parts fabricated with the automated LFP system were compared with those of parts fabricated with the powder bed fusion additive manufacturing methods. The mechanical strength is higher than those of parts fabricated by the laser powder bed fusion and directed energy deposition technologies. Originality/value To the best knowledge of authors, this is the first time a fully automated LFP system has been developed and the properties of its fabricated parts were compared with other additive manufacturing methods for evaluation.

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Section: Resultsmentioning

confidence: 99%

Development and experimental study of an automated laser-foil-printing additive manufacturing system

Hung

Turk

Sehhat

et al. 2022

RPJ

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“…In many engineering solutions, product performance is determined by weight, which can be scaled down by material-efficient construction and the use of low-density alloys [ 1 , 2 ]. Due to exceptional strength/stiffness-to-weight ratio, low density, good damage tolerance, ability to be heat treated and the low cost, aluminum (Al) alloys are extensively used in many exclusive fields, such as: automotive, aerospace, marine navigation, rail transit, architectural construction, microelectronics and consumer applications [ 3 , 4 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the LPBF process can be ascribed with the following steps: scattering and absorption of laser waves by the powder particles, heat transfer, melting and coalescence of particles, generation of the melt pool and its solidification [ 22 , 23 ]. Due to a high cooling rate (up to 10 6 K/s), the microstructure of the fabricated samples can dramatically differ from the conventionally prepared counterparts [ 3 , 24 ]. During solidification, the melted material tends to undergo a significant non-equilibrium metallurgical process, demonstrating different modes of heat and mass transfer, causing the formation of unique microstructures [ 25 ].…”

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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“…While in conventional manufacturing methods the raw material should undergo several different manufacturing steps, such as forming, machining, welding, etc. [3] [4], AM can produce the components in a layer-based single step fabrication process [5] with desirable mechanical properties [6] [7][8]. Depending on the format of material feedstock, which can be powder, foil, paste, etc., the material feeding method to the AM process can be different [9] [10].…”

Section: Introductionmentioning

confidence: 99%

Impact of Temperature and Material Variation on Mechanical Properties of Parts Fabricated with Fused Deposition Modelling (FDM) Additive Manufacturing

Sehhat

Mahdianikhotbesara²,

Yadegari³

2022

Preprint

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Additive Manufacturing (AM) can be deployed for space exploration purposes, such as fabricating different components of robots’ bodies. The produced AM parts should have desirable thermal and mechanical properties to withstand the extreme environmental conditions, including the severe temperature variations on moon or other planets which cause changes in parts’ strengths and may fail their operation. Therefore, the correlation between operational temperature and mechanical properties of AM fabricated parts should be evaluated. In this study, three different types of polymers, including polylactic acid (PLA), polyethylene terephthalate glycol (PETG), and acrylonitrile butadiene styrene (ABS), were used in Fused Deposition Modeling (FDM) process to fabricate several parts. The mechanical properties of produced parts were then investigated at various temperatures to generate knowledge on the correlation between temperature and type of material. When varying the operational temperature during tensile tests, the material’s glass transition temperature was found influential in determining the type of material failure. Among the materials used, ABS showed the best mechanical properties at all temperatures due to its highest glass transition temperatures. The results of statistical analysis indicated the temperature as the significant factor on tensile strength while the type of material was not a significant factor.

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A comparative investigation on the microstructure and mechanical properties of additively manufactured aluminum alloys

Cited by 77 publications

References 44 publications

Development and experimental study of an automated laser-foil-printing additive manufacturing system

Development and experimental study of an automated laser-foil-printing additive manufacturing system

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

Impact of Temperature and Material Variation on Mechanical Properties of Parts Fabricated with Fused Deposition Modelling (FDM) Additive Manufacturing

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