| Autor: |
Koval'chenko, M. S., Dzhemelinskii, V. V., Borisenko, V. A. |
| Zdroj: |
Strength of Materials; November 1969, Vol. 1 Issue: 5 p515-518, 4p |
| Abstrakt: |
Conclusions 1.The temperature dependence of the hardness of titanium, zirconium, and hafnium carbides has been investigated for temperatures from room temperature to 2000°C; it has been established that the plastic deformation of carbides is achieved by the thermally activated motion of dislocations.2.It is shown that the relationships between the hardness of the carbides and the absolute temperature obey an exponential law and when plotted in semi-logarithmic coordinates are expressed by three segments of straight lines with characteristic low-temperature and high-temperature breaks, i.e., they have the same regularities and features as for metals.3.A substantial increase in the activation energy has been established on passing from the intermediate temperature region (0.20–0.47) Tm to the high-temperature region, which testifies to a change in the deformation mechanism. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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