Effect of Crystallographic Texture on Hydride Orientation in Zr-(1%)Nb Fuel Clad

Salehi, Jalil; Arab, Khodakaram; Keyvanara, Amir; Rezvanianzadeh, Mohammadreza

Effect of Crystallographic Texture on Hydride Orientation in Zr-(1%)Nb Fuel Clad

Authors

Jalil Salehi

Khodakaram Arab

Amir Keyvanara

Mohammadreza Rezvanianzadeh

Abstract

In this paper, the effect of crystallographic texture on hydride orientation in the inner and outer layers of Zr-(1%)Nb clad was investigated. (0002) pole figures were measured by transmission and reflection X-ray diffraction method. Volume fraction, V_r of grains having their basal poles in a specified orientation region with respect to the radial direction and effective fraction of basal poles aligned with a circumferential direction, f_r, were calculated from the data pole figures. The results of the analyses showed that there was a texture gradient in the clad thickness from the inner to the outer layers. f_r and V_r(φ:0-30°( had inverse relationship to hydride fraction (F). In the inner layer f_r, V_r(φ:0-30°( and F were 0.53, 0.57 and 0.25, respectively. In the outer layer, those were shown to be 0.41, 0.33 and 0.61, respectively.

Keywords

Zr-(1%)Nb Clad

Crystallographic Texture

Hydride Orientation

Pole Figure

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