Scholarlink

<p>This work studies the porosity in printed samples of 1.2709/X3NiCoMoTi18-9–5 heat-treated steel, where two printing directions were evaluated (0 and 90°). Three-dimensional images were acquired by micro-CT (before and after heat treatment) in order to characterize them. Results show that specimens without heat treatment and printed at 0°, have pore diameters ranged 14 ~ 128&#xa0;μm, being larger than that of the identical specimens after heat treatment. In contrast, specimens printed at 90° did not show any drastic change, since the range of pore diameters ranged 8 ~ 58&#xa0;μm for both. Also, a reduction of 76.01% on the number of pores of the specimens (at 0°) after heat treatment was found. Conversely, the pore morphology of heat-treated specimens tends to be more spherical (+ 9.14%) when compared to the non-heat-treated specimens. In conclusion, the micro-CT proved to be an excellent technique to characterize internal process flaws and to follow their evolution after post-processing.</p> Graphic Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Tridimensional analysis of porosity derived from LPBF additive manufacturing by micro-computed tomography (micro-CT)

  • 期刊论文

  • 发表日期：

    2025年11月3日

查看全文
  • Marco Antonio Paredes-Guillén,
  • Celso Eduardo Cruz-González,
  • Juan Manuel Salgado-López,
  • Héctor Javier Vergara-Hernández,
  • Francisco Reyes-Calderón,
  • Luis Olmos,
  • Diego Germán Espinosa-Arbeláez

摘要

This work studies the porosity in printed samples of 1.2709/X3NiCoMoTi18-9–5 heat-treated steel, where two printing directions were evaluated (0 and 90°). Three-dimensional images were acquired by micro-CT (before and after heat treatment) in order to characterize them. Results show that specimens without heat treatment and printed at 0°, have pore diameters ranged 14 ~ 128 μm, being larger than that of the identical specimens after heat treatment. In contrast, specimens printed at 90° did not show any drastic change, since the range of pore diameters ranged 8 ~ 58 μm for both. Also, a reduction of 76.01% on the number of pores of the specimens (at 0°) after heat treatment was found. Conversely, the pore morphology of heat-treated specimens tends to be more spherical (+ 9.14%) when compared to the non-heat-treated specimens. In conclusion, the micro-CT proved to be an excellent technique to characterize internal process flaws and to follow their evolution after post-processing.

Graphic Abstract