Critical Assesment 37:  Harmonic-structure materials - idea, status and perspectives

  • Dmytro Orlov
    Department of Mechanical Engineering, LTH, Lund University, Lund, Sweden
  • Kei Ameyama
    Department of Mechanical Engineering, College of Science and Engineering, Ritsumeikan University, Kusatsu, Japan


<jats:p> Recent efforts in engineering metals with high structural efficiency have resulted in developing a new category of artificial materials with heterogeneous microstructures architected across multiple scales. In this critical assessment, a relatively new concept of heterogeneous bimodal harmonic-structure (bHS) materials is introduced and analysed. It is shown that the bHS concept is applicable to a large variety of metallic materials and is most efficient in scenarios where changes in the chemical composition of materials are restricted for some reason. Basic principles, weaknesses and advantages along with present development status and perspectives are discussed. The overview of critical performance characteristics of various bHS materials is provided, and interesting directions for future research, development and applications are proposed. </jats:p>


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