Mechanical properties of high niobium TiAl alloys doped with Mo and C

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00458280" target="_blank" >RIV/68081723:_____/16:00458280 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/16:00458280
Result on the web
<a href="http://dx.doi.org/10.1016/j.matdes.2016.03.079" target="_blank" >http://dx.doi.org/10.1016/j.matdes.2016.03.079</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matdes.2016.03.079" target="_blank" >10.1016/j.matdes.2016.03.079</a>

Result language
angličtina
Original language name
Mechanical properties of high niobium TiAl alloys doped with Mo and C
Original language description
Effects of alloying elements (i.e., variable content of Mo and C) on the microstructure and mechanical properties of five types of experimental material based on TiAl alloy containing 7 at.% Nb were investigated. Mechanical properties (tensile, compression and fatigue) at room and at elevated temperatures were evaluated. Addition of Mo and/or C resulted in different phase compositions and three typical microstructures. To judge the effect of alloying on the microstructure the comparison with reference TiAl alloy with 7 at.% Nb without C and Mo addition was used. Evaluation of mechanical properties of individual alloys revealed two most promising variants: (i) alloy with 2 at.% Mo containing beta phase, having mixed microstructure and exhibiting the highest ductility, (ii) alloy with 0.5 at.% C having nearly lamellar microstructure, enhanced amount of alpha2 phase, without beta phase and exhibiting the highest strength. No positive effect of combined Mo and C addition on mechanical properties was identified. Fractographic observations revealed that the major fracture mode in all alloys was trans-lamellar. Inter-lamellar fracture was observed occasionally and mainly in C containing alloys.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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