关键词: NiAl基合金, 制备方法, 成形技术, 薄壁复杂构件, 反应制备成形

Abstract:  NiAl-based alloys are characterized by low density, high modulus and superior oxidation resistance, which are especially suitable for key components working at high temperatures and have broad application prospects in aerospace and other fields. However, as an intermetallic compound, the inherent ductility limitation becomes the technical bottleneck for the forming of complex shape component prepared using NiAl-based alloys. Therefore, it is urgent to develop new technologies of NiAl-based alloy complex component forming. In this paper, the current preparation and forming methods of NiAl-based alloys and their components are
reviewed, including melting casting, high temperature self-propagating synthesis, powder metallurgy, and reactive preparation method developed in recent years. In addition, the novel reactive preparation-forming method for the potential of complicated thin-walled component manufacturing and the development trend of NiAl-based alloy complex component forming technology are discussed.