| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 767202 | Engineering Fracture Mechanics | 2013 | 10 Pages |
Recrystallized and deformed tungsten were investigated regarding their crack resistance as a function of crack extension. The compact tension specimens were manufactured with different crack plane orientations with respect to the axis of a rod. All recrystallized samples fractured predominantly intergranularly, whereas the deformed samples fractured transgranularly in certain crack propagation directions. Both showed an increase in the fracture resistance with crack extension, i.e. they exhibit R-curve behavior. It was determined in this study that the consolidation of the various fracture planes and crack bridging cause this R-curve behavior in tungsten.
► The crack resistance as a function of crack extension was investigated for tungsten. ► The fracture type is mainly dependent on the crack propagation direction. ► R-curve behavior was found for intergranularly and transgranularly fractured samples. ► Crack initiation and pre-crack location influence the R-curve behavior.
