动力学效应对氢在锆合金中终固溶度的影响
Influence of kinetic effects on terminal solid solubility of hydrogen in zirconium alloys
摘要：
辐照后锆基核燃料包壳的完整性与氢的溶解度密切相关。综述了氢在锆合金中的溶解度测量技术的发展，并结合已建立的氢在锆合金中的溶解度模型，给出了最终固溶度的计算方法。结果往往允许与已建立的模型不同的解释。另一种定性的方法，提出了一种基于热历史，总氢含量和冷却速率的动力学模型取代固定的TSSp的沉淀的锆氧化物。从一个固定的TSSp到一个动力学限制的TSSd的模型的修改的影响进行了讨论相对于在长期存储的氢化物脆化过程的理解。
英文摘要：
The integrity of irradiated zirconium based nuclear fuel cladding is related to the precipitation of hydrides which is closely connected with the solubility of hydrogen. A review on the development of measurement technologies is given and the resulting terminal solid solubilities are reflected with respect to the established model of hydrogen solubility in zirconium alloys. The results often allow for a different interpretation than the established model. An alternative qualitative approach is proposed in which the fixed TSSp for the precipitation of zirconium hydrides is replaced by a kinetic model based on thermal history, total hydrogen content and the cooling rate. The influence of the modification of the model from a fixed TSSp to a kinetically limited TSSd is discussed with respect to the understanding of hydride embrittlement processes in long term storage.
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