PRECIPITATION IN ZR-2.5NB ENHANCED BY PROTON IRRADIATION

被引:42
|
作者
CANN, CD [1 ]
SO, CB [1 ]
STYLES, RC [1 ]
COLEMAN, CE [1 ]
机构
[1] CHALK RIVER LABS, CHALK RIVER K0J 1J0, ON, CANADA
关键词
D O I
10.1016/0022-3115(93)90089-H
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A 3.6 MeV proton irradiation of annealed Zr-2.5Nb has been performed to determine whether proton irradiation will enhance the precipitation of Nb-rich beta-phase precipitates within the alpha-grains. A transmission electron microscope examination of a foil after irradiation at 770 K for 18 h and at 720 K for 264.5 h to a total damage of 0.94 dpa revealed a fine dispersion of precipitates within the alpha-grains. Electron diffraction analysis of the precipitates found they have lattice plane spacings consistent with the Nb-rich beta-phase. This result is in agreement with the beta-phase precipitation observed following neutron irradiation, and thus it supports the use of proton irradiation to simulate neutron-irradiation effects in Zr-2.5Nb.
引用
收藏
页码:267 / 272
页数:6
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