Advanced Intermetallic TiAl Alloys
A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".
Deadline for manuscript submissions: closed (30 August 2022) | Viewed by 2536
Special Issue Editor
Interests: Ti-alloys; Intermetallics; high temperature oxidation; coatings; fluorine treatment
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Intermetallic alloys based on the γ-TiAl phase are very interesting candidates for several high temperature applications, e.g., in aero engines. Their low specific weight (ca. 4g/cm³) compared to Ni-base materials (8–9 g/cm³) and the high specific strength at elevated temperatures have led to the use of low-pressure turbine blades in jet engines made of TiAl. The use of such lightweight components helps to minimize the environmental impact of the engines; hence, it is beneficial for reducing human impact. The alloy development is still ongoing especially in view of room temperature ductility and high temperature oxidation resistance, two major obstacles for a wider use of these alloys. The third-generation alloy Ti-48Al-2Nb-2Cr has been used in General Electric engines for more than 10 years. The use in automotive engines includes turbo charger rotors or valves. New developments deal with the additive manufacturing of TiAl components.
In this Special Issue all topics dealing with advanced TiAl alloys should be addressed, i.e., alloy development, microstructure, mechanical properties, oxidation, applications, etc.
Dr. Alexander Donchev
Guest Editor
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Keywords
- Light Weight
- Alloy Development
- Aero Engines
- Oxidation
- Additive Manufacturing
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