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GH903合金系沉淀强化型Ni-Fe-Co基低膨胀高温合金。本文研究了GH903合金650℃,200—2000h时效后的组织和室温及高温的力学性能。结果表明,在650℃该合金组织和性能是比较稳定的,能满足航空发动机长期使用的需要。
GH903 alloy precipitated strengthening Ni-Fe-Co-based low-expansion superalloy. In this paper, the mechanical properties of GH903 alloy after aging at 650 ℃ for 200-2000h are studied. The results show that the microstructure and properties of the alloy at 650 ℃ are relatively stable and can meet the long-term needs of aeroengines.