Effect of Trace Yttrium Addition and Heat Treatment on the Microstructure and Mechanical Properties of As-Cast ADC12 Aluminum Alloy

Liu, Jianlong; Wu, Qi; Yan, Hong; Zhong, Songgen; Huang, Zhixiang

doi:10.3390/app9010053

Cited by 14 publications

(7 citation statements)

References 28 publications

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“…It is well known that the atomic radius of Y and Al are 0.182 and 0.147 nm, respectively, and the difference between Y and Al atomic radius is above 15% [34]. As a result, the Y atoms are difficult to enter the crystal lattice of the α-Al, instead, they tend to concentrate at the front of the solid-liquid interface, causing significant constitutional undercooling [35]. This will restrict the growth of α-Al and refine its dendritic grains.…”

Section: Grain Refinement By Adding Different Contents Of Al-3sr-8ymentioning

confidence: 99%

Effect of Al-Sr-Y intermediate alloy on microstructure and mechanical properties of A356 alloy

Huang,

Li,

Yuan

et al. 2024

Mater. Res. Express

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In this experiment, an intermediate alloy (Al-3Sr-8Y) that can refine and modify A356 alloy simultaneously was developed, and the synergistic effect of Sr and Y on the microstructure and mechanical properties of A356 alloy was investigated. The results show that when the content of Al-3Sr-8Y intermediate alloy reaches 0.3 wt.%, the morphology of α-Al dendrites is significantly refined and the secondary dendrite arm spacing (SDAS) was significantly reduced. Moreover, the morphology of eutectic Si transforms from acicular to small fibrous, and the average area and aspect ratio of eutectic Si decrease to 0.81 μm2, and 2.01. This change is caused by the twin plane re-entrant edge (TPRE) poisoning mechanism, where the addition of Al-3Sr-8Y can poison the intrinsic growth position of the Si phase, reduce the growth rate of the Si phase, promote isotropic growth, and achieve a highly branched morphology of the Si phase to form a fibrous structure. Due to the excellent synergistic effect of Sr and Y, the tensile strength and elongation of the alloy reached the maximum values of 303.5 MPa and 9.5% when 0.3 wt.% Al-3Sr-8Y was added after heat treatment, which is an increase of 18.2% and 86.3% compared with the untreated A356 alloy, respectively.

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Section: Grain Refinement By Adding Different Contents Of Al-3sr-8ymentioning

confidence: 99%

Effect of Al-Sr-Y intermediate alloy on microstructure and mechanical properties of A356 alloy

Huang,

Li,

Yuan

et al. 2024

Mater. Res. Express

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“…The mechanical and toughness characteristics of the parent alloy may be enhanced by the Y addition. Additionally, this may facilitate the processing of the alloy and increase its resistance to oxidation under high temperatures [ 12 , 13 , 14 , 15 , 16 ]. Despite its abundance among rare earth elements, Y has received little attention.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Annealing and Film Thickness on the Specific Properties of Co40Fe40Y20 Films

Liu

Chang

Chiang³

et al. 2023

Materials

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Cobalt Iron Yttrium (CoFeY) magnetic film was made using the sputtering technique in order to investigate the connection between the thickness and annealing procedures. The sample was amorphous as a result of an insufficient thermal driving force according to X-ray diffraction (XRD) examination. The maximum low-frequency alternate-current magnetic susceptibility (χac) values were raised in correlation with the increased thickness and annealing temperatures because the thickness effect and Y addition improved the spin exchange coupling. The best value for a 50 nm film at annealing 300 °C for χac was 0.20. Because electron carriers are less constrained in their conduction at thick film thickness and higher annealing temperatures, the electric resistivity and sheet resistance are lower. At a thickness of 40 nm, the film’s maximum surface energy during annealing at 300 °C was 28.7 mJ/mm2. This study demonstrated the passage of photon signals through the film due to the thickness effect, which reduced transmittance. The best condition was found to be 50 nm with annealing at 300 °C in this investigation due to high χac, strong adhesion, and low resistivity, which can be used in magnetic fields.

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“…In addition, Y also exhibited a powerful modification effect on eutectic Si. Liu et al [ 16 ] reported that 0.2 wt.% Y could transform the morphology of Si phase from stripe to short fibrous or even granular. It also refined the α-Al grains and β-Al 5 FeSi phase at the same time.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of La and Y on the Microstructure and Mechanical Properties of Cast Al-Si-Cu Alloys

et al. 2022

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The effects of La and Y on the microstructure and mechanical properties of cast Al-Si-Cu alloys were investigated by X-ray diffractometer (XRD), optical microscope (OM), and scanning electron microscope (SEM). The results indicated that the addition of La and Y had a great effect on the refinement of α-Al grains, the modification of eutectic Si phase, and the reduction of β-Al5FeSi length in Al-Si-Cu alloys. The A380 + 0.6 wt.% La/Y alloy exhibited the best microstructure and mechanical properties. The UTS and EI of the A380 + 0.6 wt.% La/Y alloy were 215.3 MPa and 5.1%, which were 22.9% and 37.8% higher than those of the matrix alloy, respectively. In addition, neither Al11La3 nor Al3Y generated by the addition of La and Y could not serve as the nucleation core of α-Al grains, so the grain refinement of α-Al originated from the growth limitation and constitutional supercooling. Since La and Y promote twinning generation and constitutional supercooling, the eutectic Si phase also changed from stripe-like to short fibrous or even granular and was significantly refined. Furthermore, thermodynamic calculations indicated that the Al11La3 phase was formed first and the Al3Y phase was generated on the Al11La3 phase.

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Effect of Trace Yttrium Addition and Heat Treatment on the Microstructure and Mechanical Properties of As-Cast ADC12 Aluminum Alloy

Cited by 14 publications

References 28 publications

Effect of Al-Sr-Y intermediate alloy on microstructure and mechanical properties of A356 alloy

Effect of Al-Sr-Y intermediate alloy on microstructure and mechanical properties of A356 alloy

The Influence of Annealing and Film Thickness on the Specific Properties of Co40Fe40Y20 Films

Synergistic Effects of La and Y on the Microstructure and Mechanical Properties of Cast Al-Si-Cu Alloys

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