Method of fabricating zircaloy tubing having high resistance to crack
propagation
    1.
    发明授权
    Method of fabricating zircaloy tubing having high resistance to crack propagation 失效
    制造具有高抗裂纹扩展性的锆石管的方法

    公开(公告)号:US5618356A

    公开(公告)日:1997-04-08

    申请号:US489597

    申请日:1995-06-12

    IPC分类号: C22F1/18 G21C3/07

    摘要: In a zirconium-alloy fuel element cladding, a method for generating regions of coarse and fine intermetallic precipitates across the cladding wall is provided. The method includes steps of specific heat treatments and anneals that coarsen precipitates in the bulk of the cladding. The method also includes at least one step in which an outer region (exterior) of the cladding is heated to the beta or alpha plus beta phase, while an inner region (interior) is maintained at a temperature at which little or no metallurgical change occurs. This method produces a composite cladding in which the outer region comprises fine precipitates and the inner region comprises coarse precipitates.

    摘要翻译: 在锆合金燃料元件包层中,提供了跨越包覆壁产生粗细和金属间析出物的区域的方法。 该方法包括在大部分包层中粗化析出物的特定热处理和退火步骤。 该方法还包括至少一个步骤,其中包层的外部区域(外部)被加热到β或α+β相,而内部区域(内部)保持在很少或不发生冶金变化的温度 。 该方法产生复合包层,其中外部区域包含微细的沉淀物,并且内部区域包括粗大的沉淀物。

    Dimensionally stable and corrosion-resistant fuel channels and related
method of manufacture
    4.
    发明授权
    Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture 失效
    尺寸稳定和耐腐蚀的燃料通道及相关制造方法

    公开(公告)号:US5305359A

    公开(公告)日:1994-04-19

    申请号:US60668

    申请日:1993-05-13

    IPC分类号: G21C21/00

    摘要: A method of manufacturing components made of zirconium-based alloy by combining heat treatment with thermal sizing. The heat treatment includes heating the component to a temperature which initiates the transformation from a hexagonal close-packed crystallographic phase of uniform texture to a body-centered cubic crystallographic phase and then quenching to a quench temperature at a rate which initiates transformation to a hexagonal close-packed crystallographic phase having a texture factor f.sub.L =0.28-0.38. The thermal sizing includes heating the component to a temperature less than the quench temperature, but sufficient to anneal the component, and then cooling. Preferably, the thermal sizing is performed twice: before and after the heat treatment.

    摘要翻译: 通过将热处理与热施胶组合来制造由锆基合金制成的部件的方法。 热处理包括将组分加热到从均匀结构的六方密度密堆积结晶相转变为体心立方晶相的温度,然后以开始转变为六方密度的速率淬火至骤冷温度 具有织构因子fL = 0.28-0.38的包层晶体相。 热定型包括将组件加热到低于淬火温度的温度,但足以退火组件,然后冷却。 优选地,在热处理之前和之后进行两次热定型。

    Alloy for improved hydriding resistance and corrosion resistance nuclear
reactor components
    5.
    发明授权
    Alloy for improved hydriding resistance and corrosion resistance nuclear reactor components 失效
    合金用于提高耐氢化性和耐腐蚀性的核反应堆组件

    公开(公告)号:US5712888A

    公开(公告)日:1998-01-27

    申请号:US658544

    申请日:1996-06-05

    摘要: An alloy having improved resistance to hydriding as well as good corrosion resistance, adequate strength, fabricability and irradiation growth. These properties make the new alloy exceptionally suited for use in boiling water reactor components such as fuel channels, fuel cladding and fuel rod spacers. The class of alloys includes zirconium-based alloys having about 0.3-1.2% tin, about 0.8-1.4% chromium, about 0.05-0.7% iron, and the remainder substantially zirconium.

    摘要翻译: 具有改善的耐水合性以及良好的耐腐蚀性,足够的强度,可制造性和照射生长的合金。 这些性能使得新型合金特别适用于沸水反应器部件,如燃料通道,燃料包层和燃料棒间隔件。 合金类包括具有约0.3-1.2%锡,约0.8-1.4%铬,约0.05-0.7%铁,其余基本上为锆的锆基合金。

    Nuclear fuel cladding having an alloyed zirconium barrier layer
    6.
    发明授权
    Nuclear fuel cladding having an alloyed zirconium barrier layer 失效
    核燃料包层具有合金化的锆阻挡层

    公开(公告)号:US5524032A

    公开(公告)日:1996-06-04

    申请号:US215458

    申请日:1994-03-21

    摘要: A cladding tube having a cross-section and including (1) a zirconium alloy outer circumferential substrate having an inner surface and having one or more alloying elements, (2) a zirconium barrier layer bonded to the inner surface of the outer circumferential substrate and being alloyed with the one or more alloying elements, and (3) a zirconium alloy inner circumferential liner bonded to the inner surface of the zirconium barrier layer. The barrier layer will have a concentration profile including a diffusion layer extending from the barrier layer's inner surface (facing nuclear fuel) to the barrier layer's interior (between the barrier layer's inner and outer surfaces). At the interior edge of the diffusion layer, there will be substantially no alloying elements. At the outer edge of the diffusion layer (the barrier layer's inner surface), the maximum concentration of alloying elements will occur.

    摘要翻译: 一种具有横截面的包层管,包括(1)具有内表面并具有一个或多个合金元素的锆合金外周基材,(2)结合到外周基材的内表面上的锆阻挡层,并且 与一种或多种合金元素合金化,和(3)结合到锆阻挡层的内表面的锆合金内周衬垫。 阻挡层将具有包括从阻挡层的内表面(面向核燃料)延伸到阻挡层内部(阻挡层的内表面和外表面之间)的扩散层的浓度分布。 在扩散层的内部边缘处,基本上不存在合金元素。 在扩散层的外缘(阻挡层的内表面)处,将发生合金元素的最大浓度。

    Process for improving corrosion resistance of zirconium or zirconium
alloy barrier cladding
    7.
    发明授权
    Process for improving corrosion resistance of zirconium or zirconium alloy barrier cladding 失效
    提高锆或锆合金屏障包层耐蚀性的工艺

    公开(公告)号:US5417780A

    公开(公告)日:1995-05-23

    申请号:US142034

    申请日:1993-10-28

    摘要: A method for fabricating a composite cladding comprised of a moderate-purity metal barrier of zirconium metallurgically bonded on the inside surface of a zirconium alloy tube which improves corrosion resistance. The improved corrosion resistance of the liner is accomplished by suitable heat treatment of the Zircaloy-zirconium composite cladding to allow diffusion of alloying elements, notably Fe and Ni, from the Zircaloy into the zirconium, in particular, to the inner surface of the zirconium liner. This diffusion anneal reduces the undesirable tendency of zirconium liner to oxidize rapidly.

    摘要翻译: 一种用于制造复合包层的方法,其包括冶金结合在锆合金管的内表面上的锆的中等纯度金属屏障,其提高耐腐蚀性。 衬垫的改善的耐腐蚀性是通过合适的热处理Zircaloy-锆复合材料包层来实现的,以允许合金元素,特别是Fe和Ni从Zircaloy扩散到锆中,特别是锆衬里的内表面 。 该扩散退火减少了锆衬垫快速氧化的不期望的趋势。

    Fuel channel and fabrication method therefor
    8.
    发明授权
    Fuel channel and fabrication method therefor 失效
    燃料通道及其制造方法

    公开(公告)号:US5805656A

    公开(公告)日:1998-09-08

    申请号:US629209

    申请日:1996-04-08

    申请人: Ronald B. Adamson

    发明人: Ronald B. Adamson

    IPC分类号: G21C3/324 G21C3/07

    摘要: A composite zirconium alloy component that exhibits a reduced propensity for irradiation growth and enhanced corrosion resistance when in a radiation field. The component is formed to have an inner core and two oppositely-disposed outer layers that are metallurgically bonded to the inner core. The inner core and the outer layers are formed from two different zirconium alloys, with the inner core alloy contributing to the ability of the component to resist dimensional distortions as a result of irradiation growth, while the outer layer alloy contributes to the ability of the component to resist corrosion. As such, the alloys are combined within the component in a manner that exploits the different corrosion and irradiation-resistance properties of the alloys.

    摘要翻译: 复合锆合金组分,其在辐射场中表现出降低的照射生长倾向和增强的耐腐蚀性。 该部件形成为具有内核和两个相对设置的外层,其被冶金结合到内芯。 内芯和外层由两种不同的锆合金形成,内芯合金有助于组件抵抗作为辐射生长的结果的尺寸变形的能力,而外层合金有助于组件的能力 抵抗腐蚀。 因此,合金以组合物的方式组合,以利用合金的不同腐蚀和耐辐射性能。

    Method of fabricating zircalloy tubing having high resistance to crack
propagation
    10.
    发明授权
    Method of fabricating zircalloy tubing having high resistance to crack propagation 失效
    制造具有高抗裂纹扩展性的锆合金管材的方法

    公开(公告)号:US5437747A

    公开(公告)日:1995-08-01

    申请号:US52791

    申请日:1993-04-23

    摘要: In a zirconium-alloy fuel element cladding, a method for generating regions of coarse and fine intermetallic precipitates across the cladding wall is provided. The method includes steps of specific heat treatments and anneals that coarsen precipitates in the bulk of the cladding. The method also includes at least one step in which an outer region (exterior) of the cladding is heated to the beta or alpha plus beta phase, while an inner region (interior) is maintained at a temperature at which little or no metallurgical change occurs. This method produces a composite cladding in which the outer region comprises fine precipitates and the inner region comprises coarse precipitates.

    摘要翻译: 在锆合金燃料元件包层中,提供了跨越包覆壁产生粗细和金属间析出物的区域的方法。 该方法包括在大部分包层中粗化析出物的特定热处理和退火步骤。 该方法还包括至少一个步骤,其中包层的外部区域(外部)被加热到β或α+β相,而内部区域(内部)保持在很少或不发生冶金变化的温度 。 该方法产生复合包层,其中外部区域包含微细的沉淀物,并且内部区域包括粗大的沉淀物。