Selective electron beam melting of high strength Al2024 alloy; microstructural characterization and mechanical properties

Kenevisi, Mohammad Saleh; Feng, Lin

doi:10.1016/j.jallcom.2020.155866

Cited by 31 publications

(10 citation statements)

References 30 publications

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“…There are limited reports on mechanical properties of Al alloys built using EBM [263]. A microhardness study of the A2024 alloy fabricated using EBM showed a nearly uniform change in hardness values in the range of 100 HV to 110 HV in both horizontal and vertical sections, which was higher than the annealed Al2024 wrought alloy, but lower than that of its counterpart in T6 solution-treated condition.…”

Section: Mechanical Properties Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Al Alloysmentioning

confidence: 92%

“…The mechanical properties of SLM as-built and heat-treated Al alloys at room and elevated temperatures has been reported in [192,263,265,266,279,281,283,288,. Laserprocessed Al alloys showed twice higher yield strength than as-cast Al alloys and comparable strength to age-hardened wrought Al alloys [289].…”

Section: Laser-processed Al Alloysmentioning

confidence: 99%

“…A feasibility study on the processing of various aluminum alloys, namely 2024, 7075, and 6061, using the Arcam S12 EBM system was reported [261][262][263]. The purpose of these experiments was to use a wide range of process settings, both preheat and melt parameters (beam speed and power), to narrow down a processing window for the production of fully dense parts.…”

Section: Microstructural Characterization and Part Quality Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Amentioning

confidence: 99%

“…In the absence of these elements, the heat treatment will have no effect on the UTS [261,262]. Kenevisi et al [263] found optimum input energy to obtain Al2024 alloy with high relative density using EBM technique. The microstructure of EBM-built alloy was crack-free and exhibited equiaxed grains with high angle grain boundaries having different crystallographic orientations and a few sub-grains.…”

Section: Microstructural Characterization and Part Quality Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Amentioning

confidence: 99%

“…A microhardness study of the A2024 alloy fabricated using EBM showed a nearly uniform change in hardness values in the range of 100 HV to 110 HV in both horizontal and vertical sections, which was higher than the annealed Al2024 wrought alloy, but lower than that of its counterpart in T6 solution-treated condition. The as-built alloy exhibited tensile and yield strengths of 314 MPa and 191 MPa, respectively, which can be improved by an appropriate post-processing treatment [263].…”

Section: Mechanical Properties Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Al Alloysmentioning

confidence: 99%

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Review of Powder Bed Fusion Additive Manufacturing for Metals

Ladani

Sadeghilaridjani

2021

Metals

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Additive manufacturing (AM) as a disruptive technology has received much attention in recent years. In practice, however, much effort is focused on the AM of polymers. It is comparatively more expensive and more challenging to additively manufacture metallic parts due to their high temperature, the cost of producing powders, and capital outlays for metal additive manufacturing equipment. The main technology currently used by numerous companies in the aerospace and biomedical sectors to fabricate metallic parts is powder bed technology, in which either electron or laser beams are used to melt and fuse the powder particles line by line to make a three-dimensional part. Since this technology is new and also sought by manufacturers, many scientific questions have arisen that need to be answered. This manuscript gives an introduction to the technology and common materials and applications. Furthermore, the microstructure and quality of parts made using powder bed technology for several materials that are commonly fabricated using this technology are reviewed and the effects of several process parameters investigated in the literature are examined. New advances in fabricating highly conductive metals such as copper and aluminum are discussed and potential for future improvements is explored.

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Section: Mechanical Properties Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Al Alloysmentioning

confidence: 92%

Section: Laser-processed Al Alloysmentioning

confidence: 99%

Section: Microstructural Characterization and Part Quality Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Amentioning

confidence: 99%

Section: Microstructural Characterization and Part Quality Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Amentioning

confidence: 99%

Section: Mechanical Properties Of Powder Bed Fusion Additive Manufactured Al Alloys Electron Beam Processed Al Alloysmentioning

confidence: 99%

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Review of Powder Bed Fusion Additive Manufacturing for Metals

Ladani

Sadeghilaridjani

2021

Metals

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Dissolution of Al₂Cu Precipitate in Al2024 Additively Manufactured by Electron Beam Melting

Kenevisi

Feng

2021

Adv Eng Mater

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Samples built by the additive manufacturing experience various thermal cycles during the process. This, as a result, defines the final microstructure of the samples. Herein, the dissolution of θ‐Al2Cu precipitate along the building direction during electron beam melting process is aimed at. Induced thermal cycles cause the layers to experience critical temperatures. The results show that the average fraction area of precipitates is decreased from 3.34% to 2.63% and finally to 2.02% by moving along the building direction from the top to the bottom. This is due to the fact that the first deposited layers are kept at temperatures more than 520 °C for longer times, which is higher than the critical temperature of Al2Cu dissolution. Because of the solubility limit of Cu in the matrix, precipitates are not fully dissolved. Comparing the ratio of the integration area of the strongest θ diffraction peak to that of the α matrix at different locations, the dissolution is also confirmed by X‐ray diffraction (XRD) results. The results of the tensile test also demonstrate a decline of about 29% in the mechanical performance by moving from the top to the bottom, which can be attributed to the precipitates’ dissolution and grain coarsening.

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Additive Manufacturing of Aluminum Alloys

2023

Springer Handbooks

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Selective electron beam melting of high strength Al2024 alloy; microstructural characterization and mechanical properties

Cited by 31 publications

References 30 publications

Review of Powder Bed Fusion Additive Manufacturing for Metals

Review of Powder Bed Fusion Additive Manufacturing for Metals

Dissolution of Al₂Cu Precipitate in Al2024 Additively Manufactured by Electron Beam Melting

Additive Manufacturing of Aluminum Alloys

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Selective electron beam melting of high strength Al2024 alloy; microstructural characterization and mechanical properties

Cited by 31 publications

References 30 publications

Review of Powder Bed Fusion Additive Manufacturing for Metals

Review of Powder Bed Fusion Additive Manufacturing for Metals

Dissolution of Al2Cu Precipitate in Al2024 Additively Manufactured by Electron Beam Melting

Additive Manufacturing of Aluminum Alloys

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Product

Resources

About

Dissolution of Al₂Cu Precipitate in Al2024 Additively Manufactured by Electron Beam Melting