Directional Effects in the Stress Corrosion Cracking of an Aluminum Alloy
| Autor: | S. W. Stiefel, L. P. Skolnick, G. M. Ugiansky |
|---|---|
| Rok vydání: | 1970 |
| Předmět: |
Materials science
General Chemical Engineering Metallurgy General Engineering chemistry.chemical_element Fracture mechanics General Chemistry Intergranular corrosion Stress (mechanics) Transverse plane chemistry Aluminium Grain boundary General Materials Science Stress corrosion cracking Stress concentration |
| Zdroj: | CORROSION ENGINEERING DIGEST. 19:199-207 |
| ISSN: | 1884-1155 0010-9355 |
| Popis: | Studies of the relative effects of grain morphology and preferred orientation on the directional susceptibility to intergranular stress corrosion cracking of a 7075-T651 aluminum alloy plate have been conducted. The role of grain morphology was found to be of paramount importance in controlling crack propagation. It was found that a slow rate of propagation along grain boundaries parallel to the applied stress accounts for the low susceptibility of longitudinally stressed specimens. The results suggest that the threshold stress for short transverse specimens approximates the low stress necessary to crack grain boundaries normal to the applied stress, and the threshold stress for longitudinal specimens approximates the high stress needed to propagate cracks along boundaries parallel to the applied stress. Preferred orientation was found to be of secondary importance when compared to the effect of grain morphology. A high degree of preferred orientation, rather than any specific slip plane orientat... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|