A novel method to 3D-print fine-grained AlSi10Mg alloy with isotropic properties via inoculation with LaB6 nanoparticles

Tan, Qiyang; Mo, Ning; Fan, Zhiqi; Yin, Yu; Bermingham, Michael; Liu, Yingang; Huang, Han; Zhou, Mingxing

doi:10.1016/j.addma.2019.101034

Cited by 54 publications

(45 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most recently, LaB 6 has also been shown to be an effective nucleant particle during L-PBF of Al10SiMg, as shown in Figures 5(c) and (d). [128] The addition of Zr has also proven to be effective in refining the as-deposited microstructure of Al alloys in AM. During solidification, Al 3 Zr particles first form in the melt.…”

Section: B Aluminum Alloysmentioning

confidence: 99%

“…5-Grain refinement of Al alloys by solute and particle addition in L-PBF. Electron backscatter diffraction (EBSD) maps of (a) Al10SiMg, (b) TiB 2 /Al10SiMg, [124] (c) Al10SiMg, (d) LaB 6 /Al10SiMg, [128] (e) Al7075, (f) Zr/Al7075, [106] (g) Al-Mg-Zr, (h) Sc/Al-Mg-Zr, [136] (i) Al7075, and (j) Si/Al7075. [115] Note the difference in scale bars between the examples.…”

Section: B Aluminum Alloysmentioning

confidence: 99%

See 1 more Smart Citation

Grain Refinement of Alloys in Fusion-Based Additive Manufacturing Processes

Zhang

Prasad

Bermingham

et al. 2020

Metall Mater Trans A

142

View full text Add to dashboard Cite

Section: B Aluminum Alloysmentioning

confidence: 99%

Section: B Aluminum Alloysmentioning

confidence: 99%

Grain Refinement of Alloys in Fusion-Based Additive Manufacturing Processes

Zhang

Prasad

Bermingham

et al. 2020

Metall Mater Trans A

142

View full text Add to dashboard Cite

“…Al 3 Zr particles develop initially in the melt during solidification. The Al 3 Zr particles offer heterogeneous nucleation sites for the main Al phase [ 14 , 25 , 26 , 27 , 28 , 29 ]. Adding Sc, especially for Al-Mg alloys, has also been used to improve the grain structure and alloy for different applications and technologies [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Adding Modifying Elements and Homogenization Annealing on Laser Melting Process of the Modified AlZnMgCu with 4%Si Alloys

et al. 2021

View full text Add to dashboard Cite

AlZnMgCu, the high-strength aluminum alloy, is unsuitable for laser melting applications due to its high hot cracking sensitivity and large solidification temperature range. Adapting this alloy for laser melting processing is a high-demand research issue for extending its use. Thus, this paper investigates the effect of adding 4%Si, 4%Si-Sc+Zr, 4%Si-Ti+B, and homogenization annealing on the laser melting process (LMP) of AlZnMgCu alloy. Homogenization annealing at 500 °C for 6.5 h was selected to dissolve most of the low melting temperature phases into the grain matrix and perform stable alloys for the LMP. The pulsed laser melting process (PLM) was performed on the as-casted and the homogenized samples. The microstructures of the as-casted, the homogenized alloys, and after the LMP were evaluated. In addition, the hardness of the base metal (BM) and laser melted zone (LMZ) were measured. The results revealed that the microstructure was enhanced and refined in the as-cast state by adding the modifiers due to the increasing nucleation potency of solidification sites and the formation of primary Al3(Ti, Zr, Sc) phases. The average grain size was decreased by 15.6 times when adding 4%Si + 0.4%Zr + 0.29%Sc, while it decreased by 10.2 times when adding 4%Si + 1%Ti + 0.2%B. The LMZ of the as-casted samples exhibited a non-uniform distribution of the grains and the elements after the LMP. This was attributed to the evaporation of Zn, Mg during the high laser power process besides the non-uniform distribution of elements and phases in samples during casting. After the laser treating of the homogenized samples with 4%Si-Sc + Zr, uniform columnar grains were formed in the direction of the laser. The presence of Ti and B changed the crystallization nature, resulting in the LMZ with very fine and equiaxed grains due to forming many nucleation centers during solidification. The hardness values have positively increased due to Si addition and adding a combination of Ti + B and Sc + Zr. The maximum hardness was 153.9 ± 5 HV achieved in the LMZ of the homogenized samples of 4%Si + 1%Ti + 0.2%B.

show abstract

“…Aluminum matrix composites (AMCs) have been adopted to increase wear resistance and hardness. Coating metal powders can produce AMCs with reinforcement particles such as Al 2 O 3 and SiC [83][84][85]; hexaborides such as CeB 6 and LaB 6 are used as grain refiners in aluminum alloys both in powder metallurgy [86] and in casting and wrought metallurgy [87,88].…”

Section: Base Metal Powdersmentioning

confidence: 99%

Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review

Bidulský¹,

Gobber

Bidulská

et al. 2021

Metals

View full text Add to dashboard Cite

In the last years, functionalized powders are becoming of increasing interest in additive manufacturing (particularly in laser powder bed fusion processing, L-PBF), due to their improved flowability and enhanced processability, particularly in terms of laser absorbance. Functionalized powders may also provide higher final mechanical or physical properties in the manufactured parts, like an increased hardness, a higher tensile strength, and density levels close to theoretical. Coatings represent a possible interesting approach for powders’ functionalizing. Different coating methods have been studied in the past years, either mechanical or non-mechanical. This work aims to present an overview of the currently obtained coated powders, analyzing in detail the processes adopted for their production, the processability of the coated systems, and the mechanical and physical properties of the final parts obtained by using L-PBF for the powders processing.

show abstract

A novel method to 3D-print fine-grained AlSi10Mg alloy with isotropic properties via inoculation with LaB6 nanoparticles

Cited by 54 publications

References 65 publications

Grain Refinement of Alloys in Fusion-Based Additive Manufacturing Processes

Grain Refinement of Alloys in Fusion-Based Additive Manufacturing Processes

Influence of Adding Modifying Elements and Homogenization Annealing on Laser Melting Process of the Modified AlZnMgCu with 4%Si Alloys

Coated Metal Powders for Laser Powder Bed Fusion (L-PBF) Processing: A Review

Contact Info

Product

Resources

About