期刊
EURO SUPERALLOYS 2010
卷 278, 期 -, 页码 551-+出版社
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMR.278.551
关键词
Intermetallics; titanium aluminides; alloy development; properties; processing; applications
Development and processing of high-temperature materials is the key to technological progress in engineering areas where materials have to meet extreme requirements. Examples for such areas are the aerospace and automotive industries. New structural materials have to be stronger, stiffer and lighter to withstand the extremely demanding conditions in the next generation of aero- and automotive engines. Intermetallic gamma-TiAl based alloys exhibit numerous attractive properties which meet these demands. These properties include high melting point, low density, high specific elastic modulus, good oxidation and burn resistance, and high specific strength up to application temperatures of 700 to 800 degrees C. Thus, current gamma-TiAl based alloys outperform advanced Ti-based alloys and have the potential to replace heavy Ni-based superalloys.
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