| Autor: |
Troshchenko, V. T., Krasovskii, A. Ya., Ezhov, V. N., Kramarenko, I. V., Prokopenko, A. V., Makovetskaya, I. A. |
| Zdroj: |
Strength of Materials; August 1986, Vol. 18 Issue: 8 p989-993, 5p |
| Abstrakt: |
Conclusions 1.At all test temperatures the characteristics of cyclic crack resistance of ZhS6F alloy are substantially higher than for ZhS6KP alloy.2.In ZhS6F alloy at increased test temperatures and in ZhS6KP alloy at all temperatures fatigue crack development occurred in the area of maximum tensile stresses regardless of the crystallographic orientation of the specimen. With an increase in test temperature from 293 to 1273°K the crack growth development increased by an order of magnitude for ZhS6P alloy and by two orders for ZhS6KP.3.An increase in test temperature or a reduction in load level of both alloys caused a transition from brittle crystallographic fracture to more ductile with the formation of smoother surfaces.4.ZhS6KP is significantly more damaged by oxidation at increased test temperatures than ZhS6F alloy.5.Regardless of the crystallographic orientation of the ZhS6F alloy specimen at room temperature in it fatigue crack development occurred in the (111) plane with the formation of one or two macroareas. The fracture had a brittle cleavage character. |
| Databáze: |
Supplemental Index |
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