Microstructure Characterization and Faigue Behavior of Beta Phase Containing Gama-TiAl Alloy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F12%3A00377745" target="_blank" >RIV/61389005:_____/12:00377745 - isvavai.cz</a>
Alternative codes found
RIV/68081723:_____/12:00377745
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Microstructure Characterization and Faigue Behavior of Beta Phase Containing Gama-TiAl Alloy
Original language description
The microstructure and fatigue properties of Ti?44Al?7.8Nb ? 0.2Ni (at.%) alloy after graded cooling heat treatment were investigated. Different techniques as SEM, TEM and FIB were used for characterization of microstructure. Quantification of phase volume fraction was measured by neutron diffraction method. After graded cooling heat treatment the structure consists of fully lamellar uniform grains which contain lamellar phases /2 and cubic phases (ordered B2 and disordered phases) at grain boundary andinterlamellar spaces. The foils for TEM were prepared using FIB technique and observed in TEM in order to identify B2 phase by selected electron diffraction. Low cycle fatigue behaviour at 750 °C shows stable fatigue crack propagation due the presence of plastic beta and B2 phases.
Czech name
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Czech description
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Project
<a href="/en/project/GAP107%2F11%2F0704" target="_blank" >GAP107/11/0704: Optimization of structure and properties of advanced high-temperature cast materials alloyed with carbon by complex heat treatment</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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