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| Introduction to the performance characteristics of deformed superalloys |
| 阅读： 0次 Posted by: 2014-1-9 16 : 48 : 49Read : 0 times |
Deformed superalloys usually contain more than a dozen elements, and their composition is very complicated. The alloying elements are enhanced by solid solution strengthening, second phase strengthening, and grain boundary strengthening to improve thermal strength and thermal stability. By adding chromium, cobalt, tungsten, High melting point elements such as molybdenum form a solid solution and strengthen the solid solution. Adding elements such as titanium, aluminum, niobium, tantalum, hafnium, vanadium, carbon and other elements to form intermetallic compounds and carbides, and second phase strengthening. Deformed superalloys are used to make important parts such as combustion chambers, tail nozzles and some turbine discs, high-pressure compressor discs, but in the two most important positions of gas turbine engines, the turbine guide blades and working blades have been deformed. Superalloys replaced, starting to give way to powder superalloys on turbine disks.
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