Effect of ultrasonic melt processing and Al-Ti-B on the microstructural refinement of recycled Al alloys

Zhao, Yuliang; He, Weixiang; Song, Dongfu; Shen, Fanghua; Li, Xinxin; Sun, Zhuo; Wang, Yao; Liu, Shuhong; Du, Yong; Fernández, Rafael Ramos

doi:10.1016/j.ultsonch.2022.106139

Cited by 32 publications

(2 citation statements)

References 69 publications

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“…However, the size of the second phase, the recovery rate of B, and the uniformity of the organization are difficult to control, and the impurities are difficult to completely remove, requiring strict air process conditions [23,24]. The powder metallurgy rule can effectively control the size, distribution, and element ratio of the second phase in the refiner by changing the raw material and preparation process and is expected to achieve a better thinning effect [25][26][27][28][29]. In recent years, nano-ceramic particles, with their good thermal and chemical stability, have been increasingly used for aluminum and aluminum alloy grain refinement.…”

Section: Al-ti-bmentioning

confidence: 99%

Development of Inoculants for Aluminum Alloy: A Review

Liu

Zhao

et al. 2023

Materials

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Aluminum and its alloys are widely used in packaging, transportation, electrical materials, and many other fields because of their abundance, light weight, good mechanical properties, suitable corrosion resistance, excellent electrical conductivity, and other advantages. Grain refinement achieved by adding inoculant is important not only to reduce the segregation and thermal cracking of alloy castings but also to improve the mechanical properties of alloy castings. Therefore, fine equiaxed grain structure has always been one of the goals pursued by the aluminum alloy casting industry. For this reason, the selection and development of effective inoculants for aluminum alloy is a key technology in the aluminum processing industry. This paper summarizes the development history of inoculants for aluminum alloy, including Al-Ti-C, Al-Ti-B, Al-Ti, Al-Ti-B-(C)-Ce, Al-Sc, and the Fe-rich phase of Al-Si alloy. At the same time, the advantages and disadvantages of common inoculants are introduced and prospective future applications are reviewed.

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Section: Al-ti-bmentioning

confidence: 99%

Development of Inoculants for Aluminum Alloy: A Review

Liu

Zhao

et al. 2023

Materials

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“…Thus it is necessary to control the solidification structure of the large-sized 6061 alloy billets. Currently, the grain refiner, such as Al-Ti-B [6][7][8], Al-Ti-C and Al-Ti-Re [7,[9][10][11] master alloy is added into the melt before solidification, as heterogeneous nucleation sites to refine the solidification structure of the large-sized DC-casting billets. But it is well known that most of the heterogeneous nucleation sites become inclusions [12].…”

Section: Introductionmentioning

confidence: 99%

Effects of PMMT on microstructure and macrosegregation of large-sized 6061 alloy billet

Bao

Rui-yin³

et al. 2023

Materials Science and Technology

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The pulsed magnetic field melt treatment (PMMT) was applied in the direct chill (DC) casting of 6061 alloy billets with a diameter of 430 mm. The results indicated that the billet solidification structure was refined and homogenised. The grain size was reduced by 20.4% in the billet centre. Meanwhile, the PMMT can reduce the addition of grain refiner. The negative macrosegregation in the billet centre was reduced significantly. This can be attributed to the melt structure being changed by the energy of the pulsed magnetic field, which leads to the temperature of the melt variation and increased nucleation rate. This study may offer a promising method for the high-quality large-sized 6061 alloy billets preparation with less grain refiner.

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