Recovery of deformed zirconium above room temperature

Pande, B.M.; Anand, M. S.; Agarwala, R.P.

doi:10.1002/pssa.2210100247

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“…The recovery behaviour of pure zirconium above room temperature was studied earlier by resistometry (Pande et al 1972) and by positron lifetime measurements (Tanigawa et al 1982). In either case, essentially a continuous decrease in resistivity or mean lifetime was observed, representing only the vacancy migration and recrystallization processes being operative.…”

Section: Resultsmentioning

confidence: 99%

Positron annihilation in Zr-0·5 Nb alloy

Upadhyaya

Muraleedharan

1987

Bull. Mater. Sci.

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The measurement of coincidence counting rate at the peak of the angular correlation curve shows a considerable difference between the recovery behaviour of coldworked Zr-0.5 Nb alloy from that reported for pure zirconium. This difference in behaviour illustrates the point-defect activity during the course of isochronal annealing in this alloy. The recovery spectrum can be understood in terms of the vacancy-solute entrapment upto about 250°C. In the next stage the release and clustering effects of vacancies are indicated prior to their elimination. The study thus demonstrates the effect of alloying element on the defect mobility and associated point defect interactions in Zr.

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Section: Resultsmentioning

confidence: 99%