Effect of Cooling Rate on Microstructure and Grain Refining Behavior of In Situ CeB6/Al Composite Inoculant in Aluminum

Liu, Shuiqing; Cui, Chunxiang; Wang, Xin; Li, Nuo; Shi, Jiejie; Cui, Sen; Chen, Peng

doi:10.3390/met7060204

Cited by 13 publications

(9 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For high cooling rate samples, secondary melting of intermediate alloy was carried out in a high-frequency induction smelting furnace and blown on a copper roller with a diameter of 22 cm and rotating speed of both 2000 rpm and 4000 rpm to produce Al-10Si-1.5Fe ribbons (abbreviated as C2 and C3 alloy, respectively). According to the results of the previous studies [19][20][21][22][23], the cooling rates were calculated as 6.7 × 10 2 K/s, 2.4 × 10 4 K/s, respectively. The specimens were cut from the middle of the casting rod and the spun ribbon for metallographic examination, and then were carefully ground by sandpaper in ethanol as well as dried with air.…”

Section: Methodsmentioning

confidence: 99%

Effect of Cooling Rate on the Microstructure Evolution and Mechanical Properties of Iron-Rich Al–Si Alloy

et al. 2022

Self Cite

View full text Add to dashboard Cite

The mechanical properties of iron-rich Al–Si alloy is limited by the existence of plenty of the iron-rich phase (β-Al5FeSi), whose unfavorable morphology not only splits the matrix but also causes both stress concentration and interface mismatch with the Al matrix. The effect of the cooling rate on the tensile properties of Fe-rich Al–Si alloy was studied by the melt spinning method at different rotating speeds. At the traditional casting cooling rate of ~10 K/s, the size of the needle-like β-Al5FeSi phase is about 80 μm. In contrast, the size of the β-Al5FeSi phase is reduced to 500 nm and the morphology changes to a granular morphology with the high cooling rate of ~104 K/s. With the increase of the cooling rate, the morphology of the β-Al5FeSi phase is optimized, meanwhile the tensile properties of Fe-rich Al–Si alloy are greatly improved. The improved tensile properties of the Fe-rich Al-Si alloy is attributed to the combination of Fe-rich reinforced particles and the granular silicon phase provided by the high cooling rate of the melt spinning method.

show abstract

Section: Methodsmentioning

confidence: 99%

Effect of Cooling Rate on the Microstructure Evolution and Mechanical Properties of Iron-Rich Al–Si Alloy

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…This cube's fusion plane was positioned parallel to the recoating blade trajectory during the additive manufacturing process. The selective powder deposition process involves two key steps, (1) the powder drums which deposit a 150-200 layer of powder, according to the 2D slicing geometry, and (2) a suction and skiving blade which cuts that layer of powder down to a layer height appropriate for sintering (40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50). It was presumed that the movement of the skive across the powder layer could disturb the accuracy of the selective powder deposition chamber within the XY plane.…”

Section: Eds Investigation For Elemental Diffusion and Melt Pool Morp...mentioning

confidence: 99%

Re-Imagining Additive Manufacturing through Multi-Material Laser Powder Bed Fusion

Griffis,

Shahed,

Meinert

et al. 2024

Preprint

View full text Add to dashboard Cite

Multi-Material Laser Powder Bed Fusion (MM-LPBF) offers a novel approach for fabricating high-resolution components with both spatially tailored material properties and design by capitalizing on selective powder deposition (SPD) in conventional laser powder bed fusion (LPBF) processing. Advancements in multi-material additive manufacturing (AM), specifically MM-LPBF is now presenting a unique opportunity to reimagine additive manufacturing as we know today in terms of the local material assignment, AM-processing induced properties and design complexity which can help achieve functional requirements across multiple length scales. In this study, new MM-LPBF capability to manufacture a sheet-based gyroid structure composed of 904L stainless steel and bronze (CuSn10) is studied for unique MM-LPBF signatures (e.g., melt pool characteristics, grain morphology and mechanical properties via intermittent micro-CT during flexural testing). The fracture mechanics of complex multi-material structures is investigated through multi-scale domain techniques, including mechanical testing (supported by digital image correlation (DIC), finite element analysis (FEA), and intermittent micro-CT), microstructural and morphological characterization of the bimaterial interface. This study analyzes the contribution of factors such as thermomechanical material compatibility, process-induced defects, cracking, porosity, and microstructure to determine the ultimate origin of failure and propagation patterns. Interface formation mechanisms are explored to elucidate process-structure-property framework for MM-LPBF. Findings from this study clearly demonstrate both the opportunity of MM-LPBF and current technological challenges to further advance the adoption of MM-LPF for a wide range of applications such as thermo-fluidic surfaces, solid-state energy storage, and biodegradable implants, among others.

show abstract

“…While the size of the reinforcing particles become smaller, the number of the nano-sized particles increased considerably, providing more cores for heterogeneous nucleation, and improving the nucleation rate and promoting heterogeneous nucleation. In addition, according to Stoke's Formula [25,26]:…”

Section: Refinement Effect Of Titanium Matrix Composites (Tmcs)mentioning

confidence: 99%

Microstructure and Mechanical Properties of Ti6Al4V Alloy Modified and Reinforced by In Situ Ti5Si3/Ti Composite Ribbon Inoculants

Cui

Liu

et al. 2017

Metals

Self Cite

View full text Add to dashboard Cite

This paper deals with a novel fabrication method (a vacuum rapid solidification technique) to prepare in situ Ti 5 Si 3 /Ti composite ribbon as inoculants to modify Ti6Al4V alloy to obtain titanium matrix composites (TMCs). Microstructure and morphology observations showed that the grain size of the TMCs was refined as the volume fraction of inoculants increased. The grain size of the TMCs can be refined from a grade of 650 µm to about 110 µm with a very small refiner adding ratio of 0.6% in weight. Thereafter, the mechanical properties of the TMCs, including their tensile strength, microhardness, impact properties, and resistant properties were improved obviously by adding the ribbon inoculants. The excellent grain refining and reinforcement effect can be attributed to the nano-sized Ti 5 Si 3 refiner particles distributed homogeneously in the matrix, the well-banded particle/matrix interface, and the good wettability between the Ti 5 Si 3 particles in inoculants and the Ti6Al4V alloy melt, which are benefit for the heterogeneous nucleation of the TMCs during solidification.

show abstract

Effect of Cooling Rate on Microstructure and Grain Refining Behavior of In Situ CeB6/Al Composite Inoculant in Aluminum

Cited by 13 publications

References 31 publications

Effect of Cooling Rate on the Microstructure Evolution and Mechanical Properties of Iron-Rich Al–Si Alloy

Effect of Cooling Rate on the Microstructure Evolution and Mechanical Properties of Iron-Rich Al–Si Alloy

Re-Imagining Additive Manufacturing through Multi-Material Laser Powder Bed Fusion

Microstructure and Mechanical Properties of Ti6Al4V Alloy Modified and Reinforced by In Situ Ti5Si3/Ti Composite Ribbon Inoculants

Contact Info

Product

Resources

About