Improvement of the Mechanical Properties of a P/M Ti-6Al-4V Alloy with Additions of Carbon and Silicon

Abstract:

Titanium alloys are widely used in aerospace applications due to their excellent strength-to-weight ratio, corrosion resistance, and high temperature performance. However, including nanoparticles as reinforcement in titanium alloys can further improve their mechanical properties, making them even more suitable for demanding aerospace applications. Titanium matrix composites (TMC) are titanium alloys typically reinforced with micron-sized ceramic particles. These reinforcements improve some properties, such as strength, but deteriorate others. However, reducing the size of reinforcements to the nanometer range allows for larger reinforcement effects to be obtained with much smaller volumetric fractions of reinforcement, which is less detrimental to fatigue, toughness, ductility, etc. This work focuses on the study of simple and safe manufacturing routes for nanoreinforced Ti alloys that increase the strength of the base material with a low negative effect on ductility. The selection of the compositions and treatment temperatures was carried out using binary phase diagrams and experimental results.

• Periodical: Materials Science Forum (Volume 1146)
• Pages: 73-80
• DOI: https://doi.org/10.4028/p-xC4A2x
• Online since: March 2025
• Authors: Nerea Burgos*, Jose Manuel Martin
• Keywords: Nanoreinforcement, Powder Metallurgy, Ti-6Al-4V

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