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<p>The sandwich configuration, fabricated through the hot-roll bonding process, shows significant potential for enhancing the mechanical properties of traditional bulk aluminum matrix composites (AMCs). However, the effect of rolling temperature variations on the microstructure and comprehensive performance of sandwich composites remains poorly understood. In this study, 1060/SiCnw-Al/1060 sandwich composites were fabricated through hot-roll bonding at various temperatures. Some SiC nanowires were uniformly distributed in the SiCnw-Al layer, while others formed clusters. A typical α-fiber and β-fiber rolling texture was observed in the SiCnw-Al layer. The through-thickness microstructure of the pure Al layer was found to be inhomogeneous. The extent of grain fragmentation and the density of high-angle grain boundaries (HABs) in the surface area initially increased and then decreased as the rolling temperature was raised from 250 to 450&#xa0;°C. The surface area primarily displayed cube and r-cube shear textures, whereas the interface region predominantly showed a cube texture. The tensile strength of the sandwich composites showed a trend of first increasing and then decreasing as the rolling temperature increased from 250 to 450&#xa0;°C, with a peak strength at 400&#xa0;°C. In contrast, the elongation consistently increased with rising rolling temperature.</p>

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Effect of Rolling Temperature on the Microstructure, Texture, and Mechanical Properties of 1060/SiCnw-Al/1060 Sandwich Composites

  • 期刊论文

  • 发表日期：

    2025年9月17日

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  • Zhijie Wang,
  • Jiaqi Wang,
  • Wenchang Liu,
  • Jigang Chen,
  • Sha Liu

摘要

The sandwich configuration, fabricated through the hot-roll bonding process, shows significant potential for enhancing the mechanical properties of traditional bulk aluminum matrix composites (AMCs). However, the effect of rolling temperature variations on the microstructure and comprehensive performance of sandwich composites remains poorly understood. In this study, 1060/SiCnw-Al/1060 sandwich composites were fabricated through hot-roll bonding at various temperatures. Some SiC nanowires were uniformly distributed in the SiCnw-Al layer, while others formed clusters. A typical α-fiber and β-fiber rolling texture was observed in the SiCnw-Al layer. The through-thickness microstructure of the pure Al layer was found to be inhomogeneous. The extent of grain fragmentation and the density of high-angle grain boundaries (HABs) in the surface area initially increased and then decreased as the rolling temperature was raised from 250 to 450 °C. The surface area primarily displayed cube and r-cube shear textures, whereas the interface region predominantly showed a cube texture. The tensile strength of the sandwich composites showed a trend of first increasing and then decreasing as the rolling temperature increased from 250 to 450 °C, with a peak strength at 400 °C. In contrast, the elongation consistently increased with rising rolling temperature.