In aeroengine design, extensive use of titanium alloys is essential in order to obtain the highest level of mechanical characteristics with the lowest weight. This major role played by titanium in turbojet production requires a careful set of precautions for melting and testing to minimize the risk of heavy inclusion entrapment detrimental to part life duration. In melting, the cold hearth refining by electron beam focussing or plasma torches for higher melt temperatures substitute the triple vacuum arc remelting. The complex microstructure of titanium alloys is taken under control through the modeling of the forging process and a precise prediction of the microstructure. The high reactivity of titanium is a great concern when used in turbojet engines which need stringent rules of design and careful choice of materials to ensure a high level of working security which is mandatory in air transportation. This has been made possible by patient and extended work of physical modelling with parallel numerical code construction at each step of implementation and for each type of use specification.
Issues and breakthrough in the manufacture of turboengine titanium parts
Entwicklungen bei der Herstellung von Komponenten für Flugzeugturbinen aus Titanlegierungen
1996
9 Seiten, 14 Bilder, 14 Quellen
Aufsatz (Konferenz)
Englisch
Unstable Operation of Turboengine Compressor
British Library Online Contents | 1996
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