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首页> 外文会议>STP 1467; International Symposium on Zirconium in the Nuclear Industry; 20040613-17; Stockholm(SE) >ZIRLO™ - An Alloy Development Success
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ZIRLO™ - An Alloy Development Success

机译：ZIRLO™-合金开发成功

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摘要

Significant data and milestones in the development of the ZIRLO alloy for PWR applications are reviewed. From humble beginnings as an R&D program, an approach to improving the corrosion resistance of zirconium-based alloys was developed. The corrosion resistance of dilute alloys is controlled by the microstructure, and both solid solution and precipitate effects impact corrosion performance. Several transition metals are beneficial for corrosion at low concentrations, but the most favorable alloy system is zirconium-niobium, because it offers flexibility in processing options. Strength of the binary alloys can be improved by additions of tin, which, in combination with low levels of iron, provide corrosion resistance in lithium hydroxide solutions. Numerous experimental ingots, thermo-mechanical processing routes, corrosion tests, and materials characterizations were performed along the path to the final alloy composition. The resulting material, ZIRLO, has proven itself as a successful alloy for PWR fuel cladding and structural applications.
机译：回顾了用于压水堆应用的ZIRLO合金开发中的重要数据和里程碑。从最初的研发计划开始，就开发了一种提高锆基合金耐腐蚀性的方法。稀合金的耐蚀性由微观结构控制，固溶体和沉淀物都会影响腐蚀性能。几种过渡金属在低浓度下有利于腐蚀，但最有利的合金体系是锆铌合金，因为它在加工选项方面具有灵活性。通过添加锡可以提高二元合金的强度，锡与低含量的铁结合可在氢氧化锂溶液中提供耐腐蚀性。沿最终合金成分的路径进行了许多实验铸锭，热机械加工路线，腐蚀测试和材料表征。最终的材料ZIRLO已证明是成功用于压水堆燃料包壳和结构应用的合金。

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