3. Material forming methodology
Divided by material forming methods: casting high-temperature alloys (including standard casting alloys, single crystal alloys, orientating alloys, etc.), malformed superalloys, metallurgy superalloys (including standard metallurgy and chemical compound dispersion reinforced superalloys).
(1) Casting superalloy
The alloy material directly ready by the soliding methodology is termed a cast superalloy. in line with the alloy matrix composition, it are often divided into 3 types: iron-based casting superalloy, nickel-based casting superalloy and drill-base casting superalloy. Divided by crystallization, it are often divided into four types: crystalline solid superalloy, directional solid solid superalloy, orientating mixture solid superalloy and single crystal solid superalloy.
(2) malformed superalloy
At present, it's still the foremost used material in aero-engines, and it's wide used reception and abroad. The annual output of malformed superalloys in China is concerning one / eight of that of the us. Taking GH4169 alloy as AN example, it's the most kind of application reception and abroad. China in the main uses bolts, compressors and wheels and oil pans of turboshaft engines because the main components. With the maturity of different alloy merchandise, the employment of malformed superalloys could step by step decrease, however it'll still be within the next few decades. Dominant.
(3) New warmth alloy
Including powder superalloys, titanium-aluminum intermetallic compounds, chemical compound dispersion reinforced high-temperature alloys, corrosion-resistant high-temperature alloys, metallurgy and nanomaterials and different subdivision merchandise.
1 The third-generation powder superalloy has improved the alloying degree, that makes the benefits of the primary 2 generations higher, and obtains higher injury with lower strength. the assembly method of powder superalloys is changing into a lot of and a lot of mature. within the future, it's going to be applied from the subsequent aspects. : powder preparation, heat treatment method, simulation technology, twin performance powder plate;
2 Titanium-aluminum-based intermetallic compounds are developed into the fourth generation, step by step increasing towards multiple dimers and an outsized variety of micro-elements. The University of city in European country, the city University in Japan, and therefore the GKSS Center in European country have conducted in depth analysis. metallic element Aluminum-based intermetallic compounds square measure currently utilized in the fields of marine, medicine and sporting goods;
3 chemical compound dispersion reinforced superalloy could be a a part of powder superalloy. it's being made and made in additional than twenty types. it's high warmth strength and low stress constant. it's wide utilized in turbine heat and oxidization resistant components, advanced aeroengines, organic compound reactor, etc.;
4 corrosion resistant superalloys square measure in the main wont to replace refractory materials and warmth resistant steel, and square measure utilized in construction and part.