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<p>Metal matrix composites (MMC) are widely used in aerospace, automotive, and other structural applications. Compared with traditional processes such as casting and powder metallurgy, MMC prepared by the laser additive manufacturing (LAM) process show significant differences in microstructure and properties and demonstrate unique advantages in areas such as MMC material design. As two of the most widely used structural metals, steel and titanium form the basis of many engineering applications. This review provides an in-depth discussion of these two metals and their related composites. It presents the results of MMC fabrication using LAM in recent years, providing a comprehensive overview of the latest research progress for two common types of steel matrix composites (SMC) and titanium matrix composites (TMC), as well as a detailed overview of the microstructures and properties of MMC fabricated with different reinforcement phases using various LAM techniques. The effects of different raw materials, proportions, reinforcing phase, preparation methods, and other factors on the microstructure and properties of the metals are described and discussed. This work describes the influence of different reinforcements, proportions, and preparation methods on the microstructure and properties of SMC and TMC. It explores the impact of various reinforcement materials on the structure and properties of the base material, including the interfacial microstructure and defects between the reinforcement and the matrix, and emphasizes the comparison of advantages and disadvantages relative to unreinforced materials. The formation strategies of reinforcements vary depending on the type of metal matrix, which further affects interfacial characteristics and overall performance. The mechanical properties, friction behavior, corrosion resistance, and other comprehensive properties of SMC and TMC reported in recent literature are also summarized. Possible reinforcement mechanisms and their connection with mechanical properties are discussed. Finally, we prospect the remaining challenges in LAM-based MMC fabrication and summarize their advantages, limitations, and development prospects.</p>

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Research progress on structure and performance of metal (steel and titanium) matrix composite materials manufactured by laser additive manufacturing: a review

  • 期刊论文

  • 发表日期：

    2025年9月23日

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  • Weiwei Liu,
  • Jianrong Song,
  • Wanyang Li,
  • Zongyu Ma,
  • Huanqiang Liu,
  • Bingjun Liu,
  • Yue Zhao,
  • Fengtao Wang

摘要

Metal matrix composites (MMC) are widely used in aerospace, automotive, and other structural applications. Compared with traditional processes such as casting and powder metallurgy, MMC prepared by the laser additive manufacturing (LAM) process show significant differences in microstructure and properties and demonstrate unique advantages in areas such as MMC material design. As two of the most widely used structural metals, steel and titanium form the basis of many engineering applications. This review provides an in-depth discussion of these two metals and their related composites. It presents the results of MMC fabrication using LAM in recent years, providing a comprehensive overview of the latest research progress for two common types of steel matrix composites (SMC) and titanium matrix composites (TMC), as well as a detailed overview of the microstructures and properties of MMC fabricated with different reinforcement phases using various LAM techniques. The effects of different raw materials, proportions, reinforcing phase, preparation methods, and other factors on the microstructure and properties of the metals are described and discussed. This work describes the influence of different reinforcements, proportions, and preparation methods on the microstructure and properties of SMC and TMC. It explores the impact of various reinforcement materials on the structure and properties of the base material, including the interfacial microstructure and defects between the reinforcement and the matrix, and emphasizes the comparison of advantages and disadvantages relative to unreinforced materials. The formation strategies of reinforcements vary depending on the type of metal matrix, which further affects interfacial characteristics and overall performance. The mechanical properties, friction behavior, corrosion resistance, and other comprehensive properties of SMC and TMC reported in recent literature are also summarized. Possible reinforcement mechanisms and their connection with mechanical properties are discussed. Finally, we prospect the remaining challenges in LAM-based MMC fabrication and summarize their advantages, limitations, and development prospects.