在许多技术领域内,结构的性能往往受使用材料的限制而不取决于结构设计。对于飞机燃气涡轮发动机而言,这一点特别确切,因为它要求重量、工作温度和推力必须平衡,才能满足规定的安全标准和经济标准。在过去几年中,新合金的研制工作之所以能有力地得到推动,是因为改进了齿轮传动装 In many technical fields, the performance of a structure is often limited by the materials used and does not depend on the structural design. This is particularly true for aircraft gas turbine engines because it requires that the weight, operating temperature and thrust must be balanced to meet the required safety and economic standards. In the past few years, the reason why the research and development of new alloys can be vigorously promoted is due to the improvement of the gear transmission