γTiAl based alloys are very attractive for structural applications at high temperatures. The addition to the selected alloy of dispersed alumina particles increases the yield strength and the elastic modulus of γTiAl alloys but affects their fracture behavior by favoring the propagation of brittle fracture. The analysis of the fracture surface revealed that the addition to oxide particle, during component production by means of investment casting, favors brittle fracture propagation by intensifying stresses and by increasing the quantity of shrinkage cavities inside the casting.
Effect of dispersed particles on TiAl alloys fracture behavior / Pilone, D.; Mondal, A.; Felli, F.. - In: PROCEDIA STRUCTURAL INTEGRITY. - ISSN 2452-3216. - 33:C(2021), pp. 245-250. (Intervento presentato al convegno 26th International conference on fracture and structural integrity, IGF26 2021 tenutosi a Italia) [10.1016/j.prostr.2021.10.030].
Effect of dispersed particles on TiAl alloys fracture behavior
Pilone D.
;Mondal A.;Felli F.
2021
Abstract
γTiAl based alloys are very attractive for structural applications at high temperatures. The addition to the selected alloy of dispersed alumina particles increases the yield strength and the elastic modulus of γTiAl alloys but affects their fracture behavior by favoring the propagation of brittle fracture. The analysis of the fracture surface revealed that the addition to oxide particle, during component production by means of investment casting, favors brittle fracture propagation by intensifying stresses and by increasing the quantity of shrinkage cavities inside the casting.| File | Dimensione | Formato | |
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