为了有效解决 IC6合金真空熔炼过程中的氧化膜问题 ,进行了加入微量碳的试验 ,在成分为 Ni- 8.0 Al- 1 4.0 Mo-0 .0 2 5B( wt% )的母合金中 ,分别添加了五种不同量的碳 ( 0 ,0 .0 3,0 .0 6,0 .1 2 ,0 .1 8wt% )。观察了真空熔炼过程中的氧化膜变化情况 ,并采用扫描电镜分析了合金的微观组织。测定了合金的室温拉伸性能和 1 1 0 0℃持久性能。综合考虑加入不同碳量的微观组织、力学性能以及碳对氧化膜的作用程度 ,确定了最佳碳加入量。 In order to effectively solve the problem of the oxide film in the vacuum melting process of IC6 alloy, a test of adding a trace amount of carbon was carried out. In a mother alloy with a composition of Ni-8.0Al-1 4.0 Mo-0. 02 5B (wt%), Five different amounts of carbon (0,0.03,0,06,0 .1,2,0.1 8 wt%) were used. The changes of oxide film in the vacuum melting process were observed. The microstructure of the alloy was analyzed by SEM. The tensile properties of the alloy at room temperature and the long-term performance at 1100 ℃ were measured. Taking into account the different carbon content of the microstructure, mechanical properties and the role of carbon on the oxide film, to determine the optimal amount of carbon added.