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U.S. Department of Energy
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ADDITIONAL OBSERVATIONS ON THE FLOW STRESS RECOVERY OF ZIRCALOY-2

Technical Report ·
OSTI ID:4317511
The flow stress recovery behavior of 5, 15 and 25% coldworked Zircaloy-2 was studied over the temperature range of 275 deg C to 500 deg C. Activation energies were calculated for 50% recovery of 15% cold-worked material. A significant and useful portion of the strain induced strength increase is retained in 15% cold worked Zircaloy-2 after long times at temperatures up to 350 deg C. No significant difference was observed between the yield strengths of 15 and 25% coldworked Zircaloy-2 after the recovery treatments. Cold working the alloy 25% did not accelerate the yield strength recovery as compared with lower per cents of cold work. Based on the data collected in this study the activation energy for 50% yield strength recovery of 15% cold worked Zircaloy-2 decreases with increasing temperature. (auth)
Research Organization:
General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
DOE Contract Number:
W-31-109-ENG-52
NSA Number:
NSA-12-002925
OSTI ID:
4317511
Report Number(s):
HW-50340
Country of Publication:
United States
Language:
English

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