Recent Developments in Producing Highly Dense Ti Matrix Composites via Powder Metallurgy Approaches

Abstract:

Titanium matrix composites (TMCs) have found extensive application in aerospace, biomedical, and military sectors due to their exceptional strength-to-weight ratio and wear resistance at ambient and elevated temperatures. Nevertheless, conventional production methods often face a compromise between cost and performance, thus limiting the suitability of this material for broad utilization in engineering contexts. Recent research findings indicate that the utilization of manufacturing techniques such as hydrogen assisted blended elemental powder metallurgy (HABEPM) with the incorporation of a double press-and-sinter option, as well as the sintering of powder blends that have been preliminarily activated through milling, can both serve as economically viable methods for the production of highly dense TMCs with satisfactory mechanical properties. Both methods guarantee the activation of sintering in powders, resulting in notable improvements in density and a more refined and uniform microstructure compared to porous and nonuniform composites obtained through traditional vacuum sintering of powder blends. This study provides novel insights into the design and production of cost-effective and environmentally friendly TMCs with determined mechanical properties.

• Periodical: Materials Science Forum (Volume 1146)
• Pages: 31-40
• DOI: https://doi.org/10.4028/p-oj10N2
• Online since: March 2025
• Authors: Yu Chao Song, Oleksandr Stasiuk, Dmytro G. Savvakin, Orest M. Ivasishin*
• Keywords: Densification, Hydrogen Assisted BEPM, Microstructure, Press-and-Sinter, Titanium Matrix Composites

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