STUDY OF IRRADIATION INDUCED DEFECTS AND PHASE INSTABILITY IN ? PHASE OF ZR EXCEL ALLOY WITH IN-SITU HEAVY ION IRRADIATION
39th Annual CNS-CNA Student Conference - 2015 June 01


Presented at:
39th Annual CNS-CNA Student Conference
2015 June 01
Location:
Toronto, Canada
Session Title:
Student Session

Authors:
H. Yu (Queen’s University)
Z. Yao (Queen’s University)
M. A. Kirk (Queen’s University)
M. R. Daymond (Queen’s University)
  

Abstract

In situ heavy ion irradiation with 1 MeV Kr2+ was carried out to study irradiation induced phase change and atomic lattice defects in theβ phase of Zr Excel alloy. No decomposition of β-Zr was observed under irradiation at either 200 °C or 450 °C. However, ω-Zr particles experienced shape change and shrinkage associated enrichment of Fe in the β/ω interface at 200 °C irradiation but not at 450 °C. The defectevolution in the β-phase was examined with single phase Zr-20Nballoy. It was found that dislocation loops with Burgers vector ½<111> and <001> both present in β-Zr under room temperature irradiation.

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