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<p>This study investigates the shear deformation behavior of CuCrZr alloy triply periodic minimal surface (TPMS) lattice structures (Diamond, Gyroid, IWP) fabricated by laser powder bed fusion at 30% relative density. Mechanical responses, energy absorption, and deformation mechanisms under compressive and shear loads were compared via experiments and finite element simulation. Under compression, Diamond lattice exhibited the highest yield strength (57.73&#xa0;MPa) and energy absorption (58.04&#xa0;MJ/m<sup>3</sup>). Under shear, Diamond and Gyroid showed comparable yield strengths (~ 26&#xa0;MPa), while IWP performed worst. The results indicated that the surface topology critically influences load-dependent deformation mechanisms. These findings provide insights for developing lattice structures with enhanced shear performance.</p> Graphical Abstract <p></p>

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Shear deformation behavior of additively manufactured CuCrZr alloy lattice structures

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Songqi Yu,
  • Dong Li,
  • Jiangwei Ren,
  • Guangying Wang,
  • Tao Wang

摘要

This study investigates the shear deformation behavior of CuCrZr alloy triply periodic minimal surface (TPMS) lattice structures (Diamond, Gyroid, IWP) fabricated by laser powder bed fusion at 30% relative density. Mechanical responses, energy absorption, and deformation mechanisms under compressive and shear loads were compared via experiments and finite element simulation. Under compression, Diamond lattice exhibited the highest yield strength (57.73 MPa) and energy absorption (58.04 MJ/m3). Under shear, Diamond and Gyroid showed comparable yield strengths (~ 26 MPa), while IWP performed worst. The results indicated that the surface topology critically influences load-dependent deformation mechanisms. These findings provide insights for developing lattice structures with enhanced shear performance.

Graphical Abstract