Topic
Zirconium alloy
About: Zirconium alloy is a research topic. Over the lifetime, 6548 publications have been published within this topic receiving 78954 citations. The topic is also known as: zircaloy.
Papers published on a yearly basis
Papers
More filters
31 Dec 1996
TL;DR: In this paper, the authors used X-ray diffraction (XRD) and transmission electron microscopy (TEM) to characterize microstructural and microchemical changes produced by neutron irradiation in zirconium, and Zr 2.5Nb alloys with differing metallurgical states.
Abstract: X-ray diffraction (XRD) and transmission electron microscopy (TEM) have been used to characterize microstructural and microchemical changes produced by neutron irradiation in zirconium and zirconium alloys. Zircaloy-2, Zircaloy-4, and Zr-2.5Nb alloys with differing metallurgical states have been analyzed after irradiation for neutron fluences up to 25 {times} 10{sup 25} n.m{sup {minus}2} for a range of temperatures between 330 and 580 K. Irradiation modifies the dislocation structure through nucleation and growth of dislocation loops and, for cold-worked materials in particular, climb of existing network dislocations. in general, the a-type dislocation structure tends to saturate at low fluences. The c-component dislocation structure, however, may evolve over long periods of irradiation. The phase structure is also modified by irradiation. The common alloying/impurity elements, Fe, Cr, and Ni, are relatively insoluble in the {alpha}-phase during irradiation irrespective of the state of the phase initially containing these elements, i.e., metastable {beta}-phase or stable intermetallic precipitate. The stable intermetallic particles may undergo structural changes dependent on their composition and the temperature. For the metastable dual-phase {alpha}/{beta}-alloys (Zr-2.5Nb alloy), the {beta}-phase structure is modified during irradiation, but the change is complex, being a combination of thermal decomposition and radiation-induced mixing.
40 citations
40 citations
TL;DR: In this article, a study of the potentials developed across growing oxide films on zirconium alloys, and the currentvoltage characteristics of these oxide films has shown that a simple treatment of the oxidation potential to give transport numbers for ions and electrons is not possible for these alloys.
40 citations
TL;DR: Investigating possible differences in the surface chemistry and/or surface topography of titanium and titanium-zirconium surfaces after sand blasting and acid etching revealed significant differences on the micro and nanoscale.
40 citations