Fatigue behavior of unirradiated V-5Cr-5Ti
- Oak Ridge National Lab., TN (United States)
The objective of this research is to determine the low cycle fatigue behavior of V-5Cr-5Ti alloys for a range of temperatures and the extent of environmental effects at ambient temperatures. The results of in-vacuum low cycle fatigue tests are presented for unirradiated V-5Cr-5Ti tested at room temperature, 240, and 400{degree}C. A comparison of the fatigue data generated in rough and high vacuums shows that a pronounced environmental degradation of the fatiuge properties exists in this alloy at room temperature. Fatigue life was reduced by as much as 84%. Cyclic stress range data and SEM observations suggest that this reduction is due to a combination of increases in rates of crack initiation and subsequent growth. The relative contribution of each difference is dependent upon the strain range.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- OSTI ID:
- 114933
- Report Number(s):
- DOE/ER--0313/17; ON: DE95013663
- Country of Publication:
- United States
- Language:
- English
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