TiAl基合金熔模精密铸造技术的发展现状

Development and Research Status of Investment Casting TiAl-Based Alloys

摘要:

TiAl基合金作为一种新型轻质高温结构材料，以其密度低、比强度和比模量高，具有较好的抗氧化和蠕变性能以及优异的抗疲劳性能，在航空航天和汽车等领域具有广阔的应用前景。本文主要介绍了TiAl基合金的熔炼技术、熔模精密铸造技术及应用研究，并提出了TiAl基合金熔模精密铸造技术的不足与展望

Abstract:

TiAl-based alloys are emerging as potential light-weight, high-temperature structural materials and possess wide capacities of engineering applications in aeronautics, space and automobile industries because of their low density, high specific strength and specific modulus, good oxidation-resistance and creep-resistance, and excellent fatigue properties. The paper will focus on the melting and investment casting technology of TiAl-based alloys. Some applications of TiAl components are summarized and some shortcomings and challenges for the investment casting of TiAl-based alloys are also proposed