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综合分析近二十年来一些国外航空涡轮喷气发动机的发展(见表1),不难看出其推力不断增大,由几百到几万公斤;翻修寿命不断延长,由几百到几万小时;涡轮入口温度不断提高,由800°~900℃到1300℃以上,并向更高(如1650℃)发展。随着这些进展,相应地要求涡轮盘加大尺寸,改进材料的耐热性和长期稳定性。从不同型号喷气发动机采用的涡轮盘材料来看(见表2),有着从马氏体不锈钢及固
A comprehensive analysis of the development of some foreign aviation turbojet engines in the past 20 years (see Table 1) shows that its thrust is constantly increasing from a few hundred to tens of thousands of kilograms; its life span has been continuously extended from hundreds to tens of thousands of hours; Turbine inlet temperature continues to rise, from 800 ° ~ 900 ℃ to 1300 ℃ above, and to higher (such as 1650 ℃) development. As these progresses, a corresponding increase in size of the turbine disk is required, improving the heat resistance and long-term stability of the material. From the different types of turbine engine disk material used (see Table 2), with martensitic stainless steel and solid