Publication

Fracture toughness of TiAl alloys: A comparison of two gamma-a2 structures

Andreas Mortensen, Russell Goodall
2008
Conference Papers

Abstract

Toughness measurements of a Ti-45Al-2N4u-2Nb + 0.8%vol TiB2 alloy with a. near fully lamellar microstructure and a Ti-46Al-8Nb alloy with a convoluted microstructure are performed at 650 degrees C under vacuum according to ASTM Standard E1820. Respective values of K-Ic = 18 MPa root m and 20 MPa root m are found, with comparatively good repeatability the toughness of these two alloys is thus relatively similar, despite significant differences in miciostructure and crack path.

Official source

https://infoscience.epfl.ch/entities/publication/ef23532c-dabb-4f80-89db-bf677992443a

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Fracture toughness of TiAl alloys: A comparison of two gamma-a2 structures

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