This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Hydrogen Embrittlement and Stress Corrosion Cracking of Titanium Alloys Caused by Cleaning Processes
Annotation ability available
Sector:
Language:
English
Abstract
Hydrogen was absorbed by titanium alloys in an alkaline scale conditioning bath. This absorption was initiated by an iron/nickel contamination on the areas to embrittle. If the hydrogen exceeds 500 ppm H chipping under load occurs. Hydrogen absorption can be completely prevented by removal of the iron/nickel contamination in a nitric acid solution prior to scale conditioning.
Vapour degreasing of titanium alloys in trichloroethene or tetrachloroethene does not have a negative effect on the subsequent welding processes. It is not expected that vapour-degreased titanium components will suffer from stress corrosion cracking under later load (stress and temperature), for example in the engine. Only stabilised trichloroethene may be used for vapour degreasing titanium components under stress. Components at 80 % rupture load suffer from stress corrosion cracking when vapour degreased with tetrachloroethene.
Recommended Content
| Aerospace Material Specification | Titanium Alloy Welding Wire 6Al - 4V, Extra Low Interstitial Environment Controlled Packaging |
| Aerospace Material Specification | Titanium Alloy Welding Wire 5Al - 2.5Sn |
| Aerospace Material Specification | Titanium Alloy, Welding Wire 8Al - 1Mo - 1V |
Authors
Citation
Thoma, M., "Hydrogen Embrittlement and Stress Corrosion Cracking of Titanium Alloys Caused by Cleaning Processes," SAE Technical Paper 850709, 1985, https://doi.org/10.4271/850709.Also In
References
- Thoma M. Titanium Science and Technology 1984 1985
- Thoma M. 36 1982 218 226
- Brauer E. 32 1981 305 310
- Reilly J. J. Sandrock F. D. 1980 53 59
- Fukushima S. Tanabe H. Int. J. Hydrogen Energy 8 1983 33 37
- Lee J. Byun S. M. Park C. N. Park J. K. Journal of Less Common Metals 87 1982 149 164
- Khatamian D. et. al. Journal of Less Common Metals 91 1983 267 273
- Arnold G. Weltar J. M. Metallurgical Transactions A 14A 1983 1573 1577
- Holman W. R. Crawford R. W. Parredes F. Transactions of the Metallurgical Society AIME 233 1965 1836 1839
- Shreir L. L. Corrosion I 2nd Butterworths London 1976
- Meyn D. A. Titanium Science and Technology Plenum Press 1973 4 2577 2609
- Wanhill R. J. H. Br. Corrosion Journal 10 1975 69 78
- Cotton J. B. Agard Conference 1967
- Simon H. Thoma M. Maier K. Industrial and Production Engineering 33 1979 76 85
- Simon H. 36 1982 213 217