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<p>Metal additive manufacturing is a niche area of research due to its exponential growth and demand in industries. Additive manufacturing (AM) allows designers to create intricate and customizable designs that would be difficult to produce using traditional manufacturing methods. Even though AM offers numerous advantages and applications, certain unavoidable defects occur during the metal additive manufacturing process, leading to a decline in mechanical properties. To minimize the defects, improve the microstructure and mechanical characteristics, post-heat treatments become more essential. Among the various post-processing treatments, hot-isostatic pressing (HIP) is found to be more effective. In this review article, the impact of HIP on additively built components made up of the most notable materials like aluminum alloy, nickel alloy, steel, and titanium alloy are studied. The article systematically discusses the effects of HIP on microstructure evolution, defect elimination, and mechanical property improvements across these alloy systems. A key contribution of this work is the comparative analysis of HIP’s effectiveness across these alloy groups, emphasizing the balance between densification benefits and potential drawbacks. This focused review aims to guide material scientists and manufacturing engineers in selecting appropriate HIP parameters and understanding its material-dependent efficacy in optimizing AM components.</p>

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Brief insights into the role of hot-isostatic pressing treatment for additively manufactured components

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • K. Renuga Devi,
  • Sreekanth Dondapati

摘要

Metal additive manufacturing is a niche area of research due to its exponential growth and demand in industries. Additive manufacturing (AM) allows designers to create intricate and customizable designs that would be difficult to produce using traditional manufacturing methods. Even though AM offers numerous advantages and applications, certain unavoidable defects occur during the metal additive manufacturing process, leading to a decline in mechanical properties. To minimize the defects, improve the microstructure and mechanical characteristics, post-heat treatments become more essential. Among the various post-processing treatments, hot-isostatic pressing (HIP) is found to be more effective. In this review article, the impact of HIP on additively built components made up of the most notable materials like aluminum alloy, nickel alloy, steel, and titanium alloy are studied. The article systematically discusses the effects of HIP on microstructure evolution, defect elimination, and mechanical property improvements across these alloy systems. A key contribution of this work is the comparative analysis of HIP’s effectiveness across these alloy groups, emphasizing the balance between densification benefits and potential drawbacks. This focused review aims to guide material scientists and manufacturing engineers in selecting appropriate HIP parameters and understanding its material-dependent efficacy in optimizing AM components.