Microstructure and mechanical properties of a TiB2-modified Al–Cu alloy processed by laser powder-bed fusion

Mair, Philipp; Kaserer, Lukas; Braun, J.; Weinberger, Nikolaus; Letofsky-Papst, Ilse; Leichtfried, Gerhard

doi:10.1016/j.msea.2020.140209

Cited by 88 publications

(30 citation statements)

References 43 publications

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“…In Ref. [ 82 ], the in situ TiB 2 (4 wt.%) reinforced Al–Cu–Ag–Mg–Ti alloy had fine equiaxed grains with ~0.64 µm average size without preferential orientation ( Figure 3 p). The reported grain size was smaller than that stated in Refs.…”

Section: Non-oxide Additivesmentioning

confidence: 96%

“…The highest elongation (~17.7%) was recorded in Ref. [ 82 ], when the Al–Cu alloy was reinforced with 4 wt.% TiB 2 ; however, the alloys exhibited a significantly lower strength and hardness. The addition of 2 wt.% CaB 6 [ 28 ] resulted in an increased elongation of 2024 alloy, up to 12.6%, and improved tensile and yield strength ( Table 1 ).…”

Section: Non-oxide Additivesmentioning

confidence: 96%

“…For a bare minimum boride additive range, at least 2 wt.% TiB 2 is sufficient to significantly alter the final morphology and crystallographic texture of LPBF-processed materials [ 64 , 73 , 77 , 82 , 83 ].…”

Section: Non-oxide Additivesmentioning

confidence: 99%

“…Meanwhile, in Ref. [ 82 ], it was highlighted that the absence of the Al 3 Ti layer does not prove a lack of nucleation, since the Al 3 Ti layer can fully transform into α-Al during the cooling process via a peritectic reaction.…”

Section: Non-oxide Additivesmentioning

confidence: 99%

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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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Section: Non-oxide Additivesmentioning

confidence: 96%

Section: Non-oxide Additivesmentioning

confidence: 96%

Section: Non-oxide Additivesmentioning

confidence: 99%

Section: Non-oxide Additivesmentioning

confidence: 99%

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

Minasyan

Hussainova

2022

Materials

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“…In contrast to the above-mentioned casting alloys, which are already well understood in processing by LPBF, highstrength aluminum alloys have recently become part of the scientific focus, marking a new class of material and therefore creating new use cases for additively manufactured parts [15][16][17][18][19][20][21][22][23][24]. Latest studies have mainly focused on copper-containing materials like EN AW 6061 [15-17, 22, 24-26],as well as on alloys of the 7xxx series [18,27] and the processing of 5xxx series aluminum alloyed with Sc or Zr, like Scalmalloy® [19,20].…”

Section: Highlightsmentioning

confidence: 99%

Processability of high-strength aluminum 6182 series alloy via laser powder bed fusion (LPBF)

Riener

Pfalz

Funcke

et al. 2022

Int J Adv Manuf Technol

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The growing demand for more materials available for the LPBF-process, in particular high-strength aluminum alloys, is evident in the market. In the present work, a systematic investigation of the processability of aluminum 6182 series alloys, using LPBF, was carried out. For this purpose, the influence of process parameters, especially of enhanced preheating by heating the substrate plate during the LPBF process, on the microstructure of EN AW 6182 specimens was studied.Experiments were conducted at different preheating temperatures always using the same d-optimal design-of-experiments, the laser power, scanning speed, hatch distance, and laser focus position being varied over a wide range.It was found that the preheating temperature has the strongest impact on hot cracking. Higher temperatures result in a significantly reduced number of hot cracks in the microstructure. Moreover, an equiaxed microstructure of the specimens manufactured can be observed at preheating temperatures of 500 °C. In addition to the preheating temperature, the achievable part density is most strongly affected by the laser focus position and the laser power, whereas the hatch distance shows no discernible impact on the part density. Furthermore, neither the hatch distance nor the laser focus position shows any significant effect on hot cracking.In combination with the optimal scanning parameters, crack-free parts with a fully equiaxed grain structure and densities > 99.0% can be manufactured via LPBF at a preheating temperature of 500 °C.

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Comparison of Additively Manufactured and Cast Aluminum A205 Alloy

Karimialavijeh

Ghasri-Khouzani

Chakraborty

et al. 2023

The Minerals, Metals &Amp; Materials Series

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Microstructure and mechanical properties of a TiB2-modified Al–Cu alloy processed by laser powder-bed fusion

Cited by 88 publications

References 43 publications

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

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

Processability of high-strength aluminum 6182 series alloy via laser powder bed fusion (LPBF)

Comparison of Additively Manufactured and Cast Aluminum A205 Alloy

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