EFFECT OF OXYGEN IMPURITIES AND ALLOYING ADDITIONS ON THE ELASTIC PROPERTIES AND INTERNAL FRICTION OF CHROMIUM (in Ukrainian)
Journal Article
·
· Ukrain. Fiz. Zhur.
OSTI ID:4240374
The results of an investigation of the effect of oxygen impurities and alloying additions (Fe, Zr, and Be) on the elastic and inelastic properties of chromium and their dependence on the temperature are presented. The minimum of the modulus of elasticity and the anomalous change in the damping decrement on the curves representing the changes in the properties of chromium and its alloys with the temperature indicate the existence of low-temperature transformations in chromium and its alloys. The displacement of the minimum of Young's modulus towards the lower temperaiures on adding zirconium to chromium is evidence of the dependence of the temperature transformation on the alloying additions. An increase in the oxygen content in chromium from 0.13 to 0.32 at.% causes a rise in the modulus of elasticity and a fall in the temperature at which there occurs a sharp increase in the damping decrement. The decrease in Young's modulus of the nickel--iron alloy indicates a weakening of interatomic bonds on adding iron to chromium. Addition of beryllium to chromium reinforces the interatomic bonds. A sharp increase in the damping decrement in the temperature region of 450 to 650 deg C is probably due to the beginning of viscous sliding along the boundaries of the grains. (auth)
- Research Organization:
- Inst. of Metal Physics, Academy of Sciences, Ukrainian S.S.R.
- NSA Number:
- NSA-13-018163
- OSTI ID:
- 4240374
- Journal Information:
- Ukrain. Fiz. Zhur., Journal Name: Ukrain. Fiz. Zhur. Vol. Vol: 4
- Country of Publication:
- Country unknown/Code not available
- Language:
- Ukrainian
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