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<p>Metal additive manufacturing (AM) facilitates the manufacturing of arbitrary 3D structures with previously unreachable degrees of freedom. Nowadays, parts are facing the challenges of working at in-service conditions in order to improve the overall performance of the components. This requires materials with multiple functionalities such as high-temperature mechanical properties, high fatigue and creep resistance abilities. Metal matrix composites, with reinforcing particles embedded within the metals/alloys, are promising for addressing some (or all) of the above requirements for harsh working environments. However, the microstructures are hard to design and produce due to the complex phase diffusion/reaction and melt flow dynamics under the non-equilibrium fabrication nature of AM. This review focuses specifically on the fatigue and creep resistance of AM MMCs under in-service conditions, with an emphasis on how composite strategies influence these properties. The underlying mechanisms responsible for these property benefits of AM processing are also interpreted and discussed. This review could provide insight into future directions for the development of this kind of materials for more critical applications.</p>

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Additively manufactured metal matrix composites: a review of fatigue and creep resistance for in-service conditions

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Haris Farooq Kiani,
  • Yi Duan,
  • Nan Xiao,
  • Shaofan Ge,
  • Zan Li

摘要

Metal additive manufacturing (AM) facilitates the manufacturing of arbitrary 3D structures with previously unreachable degrees of freedom. Nowadays, parts are facing the challenges of working at in-service conditions in order to improve the overall performance of the components. This requires materials with multiple functionalities such as high-temperature mechanical properties, high fatigue and creep resistance abilities. Metal matrix composites, with reinforcing particles embedded within the metals/alloys, are promising for addressing some (or all) of the above requirements for harsh working environments. However, the microstructures are hard to design and produce due to the complex phase diffusion/reaction and melt flow dynamics under the non-equilibrium fabrication nature of AM. This review focuses specifically on the fatigue and creep resistance of AM MMCs under in-service conditions, with an emphasis on how composite strategies influence these properties. The underlying mechanisms responsible for these property benefits of AM processing are also interpreted and discussed. This review could provide insight into future directions for the development of this kind of materials for more critical applications.