In-situ fabrication of submicron α-Al2O3 particle reinforced AlSi9Cu3 alloy matrix composites by TIG arc process

Yan, Qing Song; Chen, Gang; Zhang, Zhenya; Zhao, Yutao; Liu, Xin; Mu, Shuyu; Zhang, Hui

doi:10.1088/2053-1591/ab0e2d

Cited by 3 publications

(1 citation statement)

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“…The hardness of Al 2 O 3 particles is high, and the composite has higher specific strength and superior wear resistance. In-situ Al 2 O 3 particles are mostly produced by Al-SiO 2 [14], Al-ZrO 2 [15], Al-CuO [16] and Al-TiO 2 [17] systems. However, the raw materials and manufacturing cost of these systems are relatively high, which limits the development of industrial applications of Al 2 O 3 parti- cle reinforced aluminium matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Study on the Al₂O_3p/Al composites prepared by Al-calcined kaolin system

Zhang

Chen

Zhang

et al. 2021

Materials Science and Technology

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In this study, in-situ Al2O3p/Al composite was prepared by the exothermic dispersion method from Al-calcined kaolin system. Thermodynamic analysis was carried out by calculating Gibbs free energy. The reaction kinetics of the system was studied by differential scanning calorimetry and Kissinger equation. The effects of heating temperature and holding time on the microstructure of the composites were analysed. The results showed that the reaction activation energy of the system continued to increase with the progress of the reaction. With the extension of the reaction time at 800°C, the particle size of Al2O3 increased slowly. When the holding time was 50 min, the density and hardness of the composite material were 2.7 g cm−3 and 64HV respectively.

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