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<p>Single NiTi particle-reinforced aluminum matrix composites have excellent damping capacity, but the temperature range of phase transition damping is narrow. Therefore, to address this issue, two types of NiTi particles at various aging temperatures were mixed and added to the 1060 Al matrix using friction stir processing to prepare NiTip/1060Al composites. The results presented that the NiTi particles were well combined with the 1060 Al matrix, the interface was clear, and no intermetallic compound was formed in the composites. After the NiTi particles were mixed, multiple phase transformation peaks appeared, and the phase transformation peak temperature corresponded to a single NiTi particle. The superposition effect of the phase transformation after the NiTi particles were mixed broadened the phase transition temperature range of the hybrid NiTi particles-reinforced 1060 Al matrix composites (the NAC-3 sample). During heating, the internal friction (IF) value of the NAC-3 sample was 54 and 42% greater than that of the FSPed 1060Al sample at −10 and 27°C, respectively. During cooling, the IF value of the NAC-3 sample was 77 and 62% greater than that of the FSPed 1060Al sample at −93 and –62°C, respectively. Compared with the single NiTi particle reinforcement, the hybrid NiTi particles-reinforced 1060 Al matrix composite has a wider phase transition damping temperature range and more damping peaks, which provides a new strategy for developing NiTip/Al composites with wide damping temperature range.</p>

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Study on the Microstructure, Phase Transition, and Damping Capacity of Hybrid NiTi Particles-Reinforced 1060 Al Matrix Composites

  • 期刊论文

  • 发表日期：

    2025年3月6日

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  • Shujie Zhang,
  • Hongjie Jiang,
  • Chongyu Liu,
  • Hongfeng Huang,
  • Shuhui Liu,
  • Lili Wei,
  • Zhengbing Meng

摘要

Single NiTi particle-reinforced aluminum matrix composites have excellent damping capacity, but the temperature range of phase transition damping is narrow. Therefore, to address this issue, two types of NiTi particles at various aging temperatures were mixed and added to the 1060 Al matrix using friction stir processing to prepare NiTip/1060Al composites. The results presented that the NiTi particles were well combined with the 1060 Al matrix, the interface was clear, and no intermetallic compound was formed in the composites. After the NiTi particles were mixed, multiple phase transformation peaks appeared, and the phase transformation peak temperature corresponded to a single NiTi particle. The superposition effect of the phase transformation after the NiTi particles were mixed broadened the phase transition temperature range of the hybrid NiTi particles-reinforced 1060 Al matrix composites (the NAC-3 sample). During heating, the internal friction (IF) value of the NAC-3 sample was 54 and 42% greater than that of the FSPed 1060Al sample at −10 and 27°C, respectively. During cooling, the IF value of the NAC-3 sample was 77 and 62% greater than that of the FSPed 1060Al sample at −93 and –62°C, respectively. Compared with the single NiTi particle reinforcement, the hybrid NiTi particles-reinforced 1060 Al matrix composite has a wider phase transition damping temperature range and more damping peaks, which provides a new strategy for developing NiTip/Al composites with wide damping temperature range.