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Alumina-forming duplex stainless steels as accident resistant fuel cladding materials for light water reactors

机译:氧化铝形成的双相不锈钢,用作轻水反应堆的耐事故燃料包壳材料

摘要

The present invention relates to a nuclear fuel cladding pipe having a duplex organization and a manufacturing method thereof. By including 35-65 wt% of iron (Fe), 15-30 wt% of chromium (Cr), 15-30 wt% of nickel (Ni) and 5-10 wt% of aluminum (Al), essential processability and mechanical toughness can be retained as a thin nuclear fuel cladding pipe by forming the duplex organization in which an austenite phase with excellent ductility and a ferrite phase with excellent strength are mixed. Critical accident resistance which is dramatically improved can be provided because stable alumina is generated in a high temperature vapor environment which is expected under a high temperature nuclear accident.
机译:具有双工组织的核燃料包壳管及其制造方法技术领域本发明涉及具有双工组织的核燃料包壳管及其制造方法。通过包含35-65 wt%的铁(Fe),15-30 wt%的铬(Cr),15-30 wt%的镍(Ni)和5-10 wt%的铝(Al),基本的可加工性和机械性能通过形成将延展性优异的奥氏体相与强度优异的铁素体相混合的双相组织,可以保持薄壁核燃料包覆管的韧性。由于在高温蒸汽环境中会产生稳定的氧化铝,而高温核事故中预期会产生稳定的氧化铝,因此可以提供显着提高的关键事故耐受性。

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