Mechanical Properties of Woven-Build Pattern Ti-6Al-4V Manufactured by Laser Wire Direct Energy Deposition (LW-DED)

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Dr. Ismat Ara, ismat.ara@ndsu.edu; Graduate Student Shayan Talebzadeh, shayan.talebzadeh@ndsu.edu; Dr. Fardad Azarmi, fardad.azarmi@ndsu.edu; 
North Dakota State University 

https://doi.org/10.53192/ITSC2026533

Additive manufacturing technologies, such as Laser Directed Energy Deposition (LDED) have shown great potential for the development of complex and high-performance metal components. In this study, laser wire direct energy deposition (LW-DED) was utilized to fabricate Ti-6Al-4V, which is widely used in aerospace and biomedical applications due to its excellent strength-to-weight ratio and biocompatibility. This study primarily investigates the key mechanical properties of Ti-6Al-4V processed by LW-DED. The elastic modulus was examined using an analytical method using Knoop microhardness results. It was also determined using nanoindentation, resonance frequency (RF) experiments. Despite differences in scale and methodology, these results were in good agreement with each other and comparable to the elastic modulus of conventionally processed Ti-6Al-4V. This consistency confirms the capability of the LW-DED process to preserve the alloy’s modulus even under non-uniform solidification condition. Furthermore, comprehensive microstructural and compositional analyses, such as optical microscopy, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS) were performed. The resulting data were used to construct an image-based finite element model aimed at estimating the mechanical properties of LW-DED fabricated Ti-6Al-4V. Overall, the data were promising that highlights the potential of LW-DED for producing high-performance alloy with reliable mechanical properties.

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Erscheinungsdatum

March 2026

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