| Abstract Scope |
Wire arc additive manufacturing (WAAM) is a promising technology to fabricate materials with superior properties, offering various advantages such as high deposition rate, minimal material waste. In this study, Ti-6Al-4V alloy was fabricated by WAAM and its high-temperature oxidation resistance properties were evaluated. Thermogravimetric analysis (TGA) was performed at 700, 800, 900 and 1000°C for 24 hours and showed weight increases of 1.64, 10.62, 24.84 and 45.66 mg/cm² with increasing temperature. As a result of observing the oxidised surface, oxides mainly composed of Ti and Al were formed, and as a result of observing the oxidation cross-section, these oxides were found to form alternating layers. Notably, WAAM Ti-6Al-4V showed superior oxidation resistance compared to conventional Ti-6Al-4V. Based on the above results, elucidates the mechanism of high-temperature oxidation and demonstrates the potential of WAAM to produce high-performance alloys. |