| Autor: |
Kuslitskii, A. B., Kreimerman, G. I., Tkachev, V. I., Kokotilo, I. V., Starevoitov, Yu. A., Karpenko, G. V. |
| Zdroj: |
Materials Science; May 1967, Vol. 2 Issue: 3 p240-242, 3p |
| Abstrakt: |
1.Vacuum-refining, which brings about a reduction in the quantity of non-metallic inclusions, harmful impurities, gases and other metallurgical defects, increases the fatigue resistance of steel (in the low endurance range) in air and in corrosive and hydrogen-charging media. The largest difference in endurance between open-hearth and vacuum-refined steel is observed for-specimens fatigued in a hydrogen-charging medium.2.Specimens cut in the direction of rolling have a higher endurance than transverse specimens. Increasing the fatigue test strain amplitude causes a substantial increase in this difference for specimens tested in air and, to a lesser extent, in a corrosive medium, and markedly reduces it in tests in a hydrogen-charging medium.3.Increasing the degree of reduction of steel in hot-rolling causes a slight increase in its endurance in air, but has little effect on this property in a corrosive medium. When the fatigue tests are carried out in a hydrogen-charging medium, increasing the degree of hot-working causes a reduction in the endurance of steel to an extent which increases with increasing fatigue strain amplitude. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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