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.
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TL;DR: In this article, the solubility of oxygen in niobium and solid-solution alloys of mobium with other transition metals of Groups IVA, VIA, VIIA, and VIIIA was measured.
Abstract: The solubility of oxygen in niobium and solid-solution alloys of mobium with other transition metals of Groups IVA, VIA, VIIA, and VIIIA was measured. The solubility of oxygen in niobium over the temperature range 700 -1550 deg C obeys the relation: -log/sub e/N = 8600/RT + 0.516 where N is the atomic fraction of oxygen in solution. Additions of molybdenum, rhenium, and ruthenium to niobium all reduce oxygen solubility, zero solubility being reached when the electron/atom ratio of the alloy is about 5.75. Additions of titanium increase the oxygen solubility, but zirconium, which forms a very stable oxide ZrO/sub 2/, reduces oxygen solubility markedly. It is concluded that the solubility of oxygen in transition metal alloys is largely electronic in nature, solubility being small if the electron/atom ratio of the alloy exceeds 5.75, and being very much larger in alloys of a lower electron/atom ratio, the oxygen dissolving with a positive charge. (auth)
75 citations
TL;DR: In this article, the average size of the hydrides, the proportion of hydride located at grain boundaries, and proportion of the equilibrium δ-hydride increased as the hydrogen concentration was increased and/or the rate of cooling was decreased.
75 citations
TL;DR: In this article, a cold spray process for the deposition of chromium (Cr) coatings on zirconium-alloys is presented with the goal of improving the accident tolerance of light water reactor (LWR) fuel cladding tubes.
75 citations
TL;DR: In this article, the terminal solid solubility (TSS) of hydrogen for Zr-alloy pressure tube materials was determined corresponding to end of hydride dissolution (TSSD) and start of hydrogen precipitation (TSSP) using the dilatometry technique.
74 citations
TL;DR: In this article, a fracture model was developed by considering the hydrides to crack readily under tensile loading so that an array of microcracks formed in the microstructure.
Abstract: The presence of hydrides in the microstructure can substantially reduce the tensile ductility of Zr and Ti alloys. For treating hydride-induced embrittlement in these alloys, a fracture model has been developed by considering the hydrides to crack readily under tensile loading so that an array of microcracks form in the microstructure. Interaction of the plastic fields of the microcracks leads to fracture of the matrix ligaments, and a loss in the tensile ductility. Application of the proposed model to Zircaloys reveals that hydride-induced embrittlement depends on the hydride size, morphology, and distribution, as well as the continuity of the hydride network, in accordance with experimental observations.
74 citations