Fuxiao Yu

Abstract In the present work, the microstructures and electrical conductivity of Al-15Si alloy in casting, extruding and solution treatment conditions were investigated. The results indicate that the extruded Al-15Si alloy has higher electrical conductivity. It has been revealed that the morphology of Si, iron element and grain boundary impact on electrical conductivity of the Al-Si alloy. With the revolution of the microstructure, these factors which lead to the changing electrical conductivity of the alloy are discussed in detail.

10.1088/1757-899x/774/1/012065

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Microstructure evolution of Al-15% Si alloy during hot rolling

Philosophical Magazine Letters (2018)

Chunxia Wang Fuxiao Yu Dazhi Zhao Xiang Zhao Liang Zuo

A direct chill (DC) cast Al-15% Si alloy was processed by hot rolling with a single pass at a temperature of 520°C with a thickness reduction of 80%. Scanning electron microscopy (SEM), electron backscattering diffraction (EBSD) and transmission electron microscopy (TEM) were used to investigate the evolution of the sample’s microstructure. After hot rolling, silicon particles homogeneously distributed in the Al matrix with fine equiaxed grains of average size ∼ 0.95 μm. High-angle boundaries (HABs) (about ∼75.8% in percentage) dominate in the Al matrix structure. There is evidence for Si-particle-stimulated continuous dynamic recrystallization (CDRX) during hot rolling.

Equiaxed crystals

Recrystallization (geology)

Dynamic Recrystallization

10.1080/09500839.2019.1573332

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Aging Behavior and Precipitates Analysis of Wrought Al-Si-Mg Alloy

Materials (2022)

Fang Liu Fuxiao Yu Dazhi Zhao

Aging behavior of wrought Al-12.7Si-0.7 Mg alloy was investigated during isothermal aging at 180 °C. Two aging peaks were observed at 3 h and 8 h, respectively. To examine precipitate evolution during aging, the alloy's microstructure in different aging states was investigated by regular and high-resolution transmission electron microscopy (TEM and HRTEM). The results revealed that the variation of mechanical properties is attributed to the combining effect of Si particles, the grain boundary, and the character of precipitates. The predominant precipitates' type, size, and volume fraction vary as aging time increases.

Volume fraction

Isothermal process

10.3390/ma15228194

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SEM and AFM studies of a 5-fold surface of icosahedral AlPdMn

Journal of Non-Crystalline Solids (2004)

Fuxiao Yu Maarten Bischoff A. R. Ross T. A. Lograsso H. van Kempen

Sublimation

10.1016/j.jnoncrysol.2003.12.029

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