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<p>Additive manufacturing process has unfolded diverse applications by providing a unique manufacturing technique for fulfilling the need of customized metallic implants. This paper presents the electrochemical behavior of laser powder bed fusion (L-PBF) processed Ti-6Al-4V alloy implants, a crucial aspect for their application, which has received limited research attention. This study examines the effect of different build orientations and heat treatment (HT) on electrochemical properties of the specimens. Rectangular specimens (80 x 40 x 5&#xa0;mm<sup>3</sup>) were built at three orientations of 0, 45, and 90° and then heat-treated at 800&#xa0;°C for 1.5 hours and furnace cooled. Their corrosion behavior was studied in the Ringer’s solution, and all the samples were found to exhibit passive behavior. The corrosion rate decreased with an increase in orientation from 0 to 90° in the as-built conditions. However, after HT, the corrosion rate becomes uniform across all the build-oriented samples.</p>

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Effect of Build Orientation on the Electrochemical Behavior of Additively Manufactured Ti-6Al-4V Alloy

  • 期刊论文

  • 发表日期：

    2026年2月28日

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  • Pankaj Kumar Singh,
  • Santosh Kumar,
  • Pramod Kumar Jain

摘要

Additive manufacturing process has unfolded diverse applications by providing a unique manufacturing technique for fulfilling the need of customized metallic implants. This paper presents the electrochemical behavior of laser powder bed fusion (L-PBF) processed Ti-6Al-4V alloy implants, a crucial aspect for their application, which has received limited research attention. This study examines the effect of different build orientations and heat treatment (HT) on electrochemical properties of the specimens. Rectangular specimens (80 x 40 x 5 mm3) were built at three orientations of 0, 45, and 90° and then heat-treated at 800 °C for 1.5 hours and furnace cooled. Their corrosion behavior was studied in the Ringer’s solution, and all the samples were found to exhibit passive behavior. The corrosion rate decreased with an increase in orientation from 0 to 90° in the as-built conditions. However, after HT, the corrosion rate becomes uniform across all the build-oriented samples.