The present work investigated the dry sliding wear behavior of gamma titanium aluminide (γ-TiAl) alloy deposited by electron beam melting (EBM) additive manufacturing technique. The wear-testing parameters used are applied load and sliding velocity, with a constant sliding distance. The wear behavior of commercially available Ti–6Al–4V and Inconel 718 was also investigated for the comparative purpose. Results revealed that EBM-additive-manufactured γ-TiAl showed superior metallurgical bonding within the consecutive layers and formation of phases like γ, α₂, and β which improved the microhardness and wear resistance compared with conventionally fabricated Ti–6Al–4V and Inconel 718, and EBM-additive-manufactured γ-TiAl showed higher wear resistance.

本工作研究了通过电子束熔化（EBM）增材制造技术沉积的γ-TiAl合金的干滑动磨损行为。使用的磨损测试参数为施加的载荷和滑动速度，且滑动距离恒定。为了比较，还研究了市售的Ti-6Al-4V和Inconel 718的磨损行为。结果表明，EBM-添加剂制造的γ-TiAl金属显示出连续的层和形成像γ相的内优良的冶金结合，α ₂，β，其提高了与现有技术相比，显微硬度和耐磨性制造的Ti-6AL-4V和Inconel 718 ，以及EBM添加剂制造的γ-TiAl表现出更高的耐磨性。