Abstract
Results from compact tension specimens and scanning electronic microscopy are used to study the fracture characteristics of nickel-base single crystal superalloy DD3. Finite element analyses are also made to better understand the outcome. The experiments showed that the initiation and growth of cracks were dependent on the crystallographic orientation of specimens, and the fracture surfaces coincided with the slip planes. Three-dimensional stresses near the crack tip are obtained. The strain energy density criterion is applied to predict the fracture of the superalloy. Agreement with experiments is good.
| Original language | English |
|---|---|
| Pages (from-to) | 89-104 |
| Number of pages | 16 |
| Journal | Theoretical and Applied Fracture Mechanics |
| Volume | 26 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 1997 |