Effect of Er and Zr addition on laser weldability of AlSi10Mg alloys fabricated by selective laser melting

Peng, Zhibo; Cui, Li; He, Dingyong; Guo, Xingye; Zeng, Yong; Cao, Qing; Huang, Hui

doi:10.1016/j.matchar.2022.112070

Cited by 16 publications

(26 citation statements)

References 35 publications

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“…Hence, it was reported that the tensile properties of the layer deposition welding were superior to laser welded PBF-LB/M/AlSi10Mg. Peng et al [35] studied the effect of Zr and Er addition in to the filler metal during laser welding of PBF-LB/M/AlSi10Mg. The size of pores and also total porosity of the welded samples were reduced with Zr and Er addition as shown in Figure 6.…”

Section: Aluminium Alloymentioning

confidence: 99%

Laser welding of additively manufactured parts - A review

Parchegani,

Piili,

Ganvir

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Additive manufacturing (AM) is a process in which parts are built up layer by layer, introducing novel approaches to how parts can be manufactured with less material waste, shorter lead times and lower costs than traditional manufacturing. One of the key advantages of AM over conventional manufacturing is its design flexibility, which enables for manufacturing of parts with highly detailed geometries in one go, leaving out the need for molding, casting, etc. However, due to the chamber size of the machines, the size of AM parts is limited. To overcome this limitation, joining AM parts together or to wrought or cast material has been proposed. Among the various welding technologies, laser welding is considered a suitable candidate for joining AM parts because of its low heat input, resulting in low deformation, high welding speed, and full automation capability. This study will provide a fundamental understanding of laser welding of AM parts by reviewing current research in the field. The possibility of joining most commonly used AM parts such as AlSi10Mg, AISI 316L, Ti6Al4V and Nickel alloy 718 by laser welding are investigated. Furthermore, the effect of laser welding parameters on mechanical and microstructural properties of joined AM parts are discussed.

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Section: Aluminium Alloymentioning

confidence: 99%

Laser welding of additively manufactured parts - A review

Parchegani,

Piili,

Ganvir

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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“…More specifically for the AlSi10Mg alloys, it is possible to highlight in the literature the following added elements fulfilling this role: Cu, Zr, Ce, Er, and Sc, which work cooperatively with Mg. The respective precipitated intermetallics formed from these elements are Al2Cu, Al2CuMg, Al3Zr, Al11Ce, Al3Er, Al3Sc, and Mg2Si [3,4,11,12]. As demonstrated by Peng et al [4] the use of multi-micro additions of elements, in the case of Er and Zr, can lead to results that are significantly superior to those obtained by the micro-addition of either Er or Zr.…”

Section: Introductionmentioning

confidence: 97%

“…The respective precipitated intermetallics formed from these elements are Al2Cu, Al2CuMg, Al3Zr, Al11Ce, Al3Er, Al3Sc, and Mg2Si [3,4,11,12]. As demonstrated by Peng et al [4] the use of multi-micro additions of elements, in the case of Er and Zr, can lead to results that are significantly superior to those obtained by the micro-addition of either Er or Zr.…”

Section: Introductionmentioning

confidence: 97%

“…Al-Si-Mg alloys combine the decrease in melting temperature, solidification interval, and thermal shrinkage, as well as the increase in fluidity resulting from the addition of Si, with the ability to increase mechanical strength generated by precipitation hardening provided by the association of small amounts of Mg and proper heat treatment, enabling the application of these alloys in structural components [1,2]. This combination of properties gives the Al-Si-Mg alloys high versatility of applications in the aerospace, aeronautical, and automotive industries [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…2 of 14 selective laser melting (SLM), high-pressure die casting (HPDC), and permanent mold casting (PM) [3,4] for an even broader range of applications.…”

Section: Introductionmentioning

confidence: 99%

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Handling Microstructural Changes and Hardness of the AlSi10Mg Alloy Through SC Doping and Direct Aging Treatment

Martinez¹,

Santos²,

Leal³

et al. 2023

Preprint

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The effects of 0.4wt.% Sc addition on a typical Al-Si10-Mg alloy were systematically investigated in the present research. Samples with and without Sc produced refined dendritic arranged microstructures with sensitivity to the aging treatment after solidification, particularly in the case of the alloy without Sc. After being exposed to 300°C for 90 minutes, the dendritic spacing nearly doubled in the Al-10wt.%Si-0.45wt.%Mg samples. The rapidly solidified microstructures were constituted by the -Al dendritic phase surrounded by eutectic phases/intermetallics such as Si, Mg2Si and Al3Sc (in the case of the alloy containing Sc). 255°C and 300°C were deemed most appropriate temperatures for aging treatments, with four exposure times of up to 120 minutes tested for each alloy. The heat treatments allowed the Vickers hardness profiles to be plotted and compared. Moreover, in order to detect both Sc- and Mg- precipitates after aging, specific samples have been prepared for either SEM or TEM analyses. At first, the results pointed to a strong precipitate-related hardening effect formed as a result of the Sc addition to the alloy. All samples containing Sc showed a higher hardness value when compared to their respective treated samples without Sc. Secondly, when comparing the Al-10Si-Mg-Sc alloy samples among themselves after being treated at different conditions, high temperatures and excessive treatment times can become detrimental to the hardness. This was due to the growth of larger Sc-bearing precipitates of approximately 1 µm in size under such conditions, having less pronounced hardening effect. The best condition (255°C for 60 min) for as centrifuged samples in Cu-mold produced very fine dispersion of Mg- and Sc- intermetallics (~200 nm in size) with a peak hardness of 110 HV.

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Effects of Sc Addition and Direct Aging Treatment on Microstructure and Hardness of AlSi10Mg Alloy

et al. 2023

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Cu‐mold centrifugal cast processing is employed as a rapid solidification method for producing samples with and without Sc. The Al–Si–Mg and Al–Si–Mg–Sc alloy samples are exposed to direct aging treatments varying temperature and time to verify the microstructural changes. Both rapidly solidified samples and as‐aged samples are characterized by a number of methods, including optical microscopy, SEM–EDS, transmission Electron Microscopy (TEM)–EDS, TEM–HAADF, X‐ray diffraction (XRD), differential scanning calorimetry (DSC), and Vickers hardness. At first, the results point to a strong precipitate‐related hardening effect formed as a result of the Sc addition to the alloy. All samples containing Sc show a higher hardness value when compared to their respective treated samples without Sc. Second, when comparing the Al–10Si–Mg–0.4Sc alloy samples among themselves after being treated at different conditions, high temperatures, and excessive treatment times are recognized as detrimental to the hardness. This is due to the growth of larger Sc‐bearing precipitates of approximately 1 μm in size under such conditions, having lower efficiency in pinning dislocations during loading. The best aging condition is 255 °C for 60 min, which produces a very fine dispersion of Mg and Sc intermetallics (200 nm in size) with a peak hardness of 110 HV.

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Effect of Er and Zr addition on laser weldability of AlSi10Mg alloys fabricated by selective laser melting

Cited by 16 publications

References 35 publications

Laser welding of additively manufactured parts - A review

Laser welding of additively manufactured parts - A review

Handling Microstructural Changes and Hardness of the AlSi10Mg Alloy Through SC Doping and Direct Aging Treatment

Effects of Sc Addition and Direct Aging Treatment on Microstructure and Hardness of AlSi10Mg Alloy

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