Microstructural study of hydride formation in Zr-1Nb alloy

Neogy, S. ; Srivastava, D. ; Tewari, R. ; Singh, R. N. ; Dey, G. K. ; Banerjee, S. (2003) Microstructural study of hydride formation in Zr-1Nb alloy Journal of Nuclear Materials, 322 (2-3). pp. 195-203. ISSN 0022-3115

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.jnucmat.2003.07.002


Hydriding of Zr-1Nb alloy having a microstructure comprising equiaxed α grains and a uniform distribution of spherical particles of the α -phase has been carried out in this study. The specimens were hydrided by gaseous charging method to different hydrogen levels. The microstructures of hydrided samples were examined as a function of hydrogen content. The formation of δ -hydride in slow cooled specimens and formation of γ -hydride in rapidly cooled specimens has been studied with their morphology, habit plane and orientation relationship with the a matrix in view. The habit planes of either type of hydride phase has been determined and compared with those observed in other Zr-Nb alloys. The orientation relationship between the a matrix and the δ -hydride was found to be the following: (0 0 0 1)α||(1- 1 1-)δ and [112-0]α||110]δ; . The orientation relationship between the α matrix and the γ -hydride was of the following type: (000 1)α||(001)ϒ and [12-10]α||[11-0]ϒ. The internal structure of both types of hydride has been examined. The effect of the presence of the spherical β-phase particles in the a matrix on the growth of the hydride plates has been investigated.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:H0400; M0500; P0200; P1300; Z0200
ID Code:82466
Deposited On:10 Feb 2012 15:34
Last Modified:10 Feb 2012 15:34

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