Microstructure evolution and strengthening mechanism of A356/Al-X-Ce(Ti, C) system by inoculation treatment

Teng, Da; Zhang, Guangzong; Zhang, Shuo; Li, Junwen; Jia, Hongfei; He, Qing; Guan, Renguo

doi:10.1016/j.jmrt.2023.12.057

Journal of Materials Research and Technology

2024

DOI: 10.1016/j.jmrt.2023.12.057

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Microstructure evolution and strengthening mechanism of A356/Al-X-Ce(Ti, C) system by inoculation treatment

Da Teng,

Guangzong Zhang,

Shuo Zhang

et al.

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Cited by 2 publications

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Achieving superior grain refinement efficiency for Al–Si casting alloys through a novel Al–La–B grain refiner

Zheng,

Zhang,

Chen

et al. 2024

Journal of Materials Research and Technology

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Achieving superior grain refinement efficiency for Al–Si casting alloys through a novel Al–La–B grain refiner

Zheng,

Zhang,

Chen

et al. 2024

Journal of Materials Research and Technology

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Microstructural Evolution and Tensile Properties of Al-Si Piston Alloys during Long-Term Thermal Exposure

Xia,

Dong,

Wang

et al. 2024

Metals

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The present study investigated microstructural evolution and changes in tensile properties of an Al-Si piston alloy subjected to thermal exposures at 250 and 350 °C for 150, 300, and 500 h. Microstructural and nanoscale precipitates were characterized using a combination of high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) images and scanning electron microscopy (SEM). The tensile testing was performed. The results demonstrated that the thermal exposure induced granulation of the δ-Al3CuNi particles, alongside precipitation of the θ-Al2Cu phase particles and AlCu clusters within the matrix. Specifically, an increase in the size and number density of the θ-Al2Cu phase particles was observed with exposure time at 250 °C. Conversely, at 350 °C, the θ-Al2Cu particles exhibited a gradual increase in size with prolonged thermal exposure, coupled with a decrease in their number density. AlCu clusters precipitated solely at a thermal exposure temperature of 350 °C, with precipitation intensifying over time. Moreover, a decrease in the alloy’s tensile strength and an increase in elongation were noted after thermal exposure. Finally, the present study discussed the precipitation mechanisms of θ-Al2Cu particles and AlCu clusters within the grains, suggesting that the AlCu clusters exerted a more effective strengthening effect compared to the θ-Al2Cu particles.

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Microstructure evolution and strengthening mechanism of A356/Al-X-Ce(Ti, C) system by inoculation treatment

Cited by 2 publications

References 54 publications

Achieving superior grain refinement efficiency for Al–Si casting alloys through a novel Al–La–B grain refiner

Achieving superior grain refinement efficiency for Al–Si casting alloys through a novel Al–La–B grain refiner

Microstructural Evolution and Tensile Properties of Al-Si Piston Alloys during Long-Term Thermal Exposure

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