论文部分内容阅读
变形合金对喷气式发动机另件的基本要求,实际上和活塞式发动机另件是一样的。但是这些特性,如疲劳强度,热强性,具有头等的和根本的意义。喷气式发动机具有离心式压缩机。由压缩机轮(大的叶轮)、散热叶轮、进气口和扩散圈所组成的压缩机的复杂部件,是用AK4、AK4-1、AK6和AK6-1铝合金模锻件来制造。在国外,喷气式发动机的离心压缩机的所有另件是用类似于AK4-1的RR58合金制造的。由于AK4和AK4-1合金具有高的热强性、持久强度和蠕变强度,所以被用于制造喷气式发动机另件。此外,这些合金工艺性好,这对制造像叶轮这样复杂的模锻件是重要
The basic requirements of the deformation alloy on jet engine parts, in fact, and piston engine parts is the same. However, these characteristics, such as fatigue strength, thermal strength, have a first-class and fundamental meaning. Jet engines have centrifugal compressors. Complicated parts of compressors consisting of compressor wheels (large impellers), cooling impellers, air inlets and diffuser rings are made of AK4, AK4-1, AK6 and AK6-1 aluminum alloy forgings. Abroad, all the other parts of the centrifugal compressor of a jet engine are made of RR58 alloy similar to AK4-1. AK4 and AK4-1 alloys are used to make jet engine parts due to their high thermal strength, long-term strength and creep strength. In addition, these alloys have good processability, which is important for making complex die forgings such as impellers