Fatigue-resistant hollow articles
    1.
    发明授权
    Fatigue-resistant hollow articles 失效
    耐疲劳中空制品

    公开(公告)号:US5753053A

    公开(公告)日:1998-05-19

    申请号:US823595

    申请日:1997-03-25

    IPC分类号: C22F1/02 C22F1/18 C22C14/00

    摘要: A hollow article is made by providing and diffusion bonding the opposing parts of an article made of an alpha-beta titanium alloy. Hydrogen is introduced into the surface of an internal cavity before, during, or after diffusion bonding. The article is heat treated with the hydrogen present, typically by solution treating and aging the hydrogen-containing bonded article. The result is the production of a microstructure at the internal surface of the cavity that is resistant to fatigue-crack initiation, while retaining a microstructure throughout the rest of the article that is resistant to fatigue-crack propagation. After heat treating, the hydrogen Is removed from the article, and any further heat treating and other operations are completed.

    摘要翻译: 通过提供和扩散粘合由α-β钛合金制成的制品的相对部分制成中空制品。 在扩散接合之前,期间或之后,将氢气引入内腔的表面。 该物品通过存在的氢进行热处理,通常通过溶解处理和老化含氢粘合制品。 结果是在空腔的内表面上产生耐疲劳裂纹引发的微观结构,同时保留了耐疲劳裂纹扩展的整个制品的微观结构。 热处理后,从制品中除去氢,完成任何进一步的热处理和其它操作。

    Method for developing enhanced texture in titanium alloys, and articles
made thereby
    2.
    发明授权
    Method for developing enhanced texture in titanium alloys, and articles made thereby 失效
    在钛合金中发展增强纹理的方法及其制造方法

    公开(公告)号:US5074907A

    公开(公告)日:1991-12-24

    申请号:US394927

    申请日:1989-08-16

    摘要: Enhanced crystallographic texture is developed in an alpha or alpha-beta titanium alloy having a dispersion of particles therein, by heating the alloy to essentially the all beta phase range and mechanically hot working the alloy in this range. The mechanical working is preferably accomplished by extrusion, rolling, or forging. The particles are stable during working, and prevent the formation of random texture in recrystallized beta phase grains at the working temperature. The particles are preferably oxides formed from rare earth elements such as erbium or yttrium, that are introduced into the alloy during manufacture. The alloys processed according to the invention are preferably prepared by powder metallurgy to achieve a uniform microstructure prior to working. A particularly suitable alpha-beta (but near alpha) titanium alloy contains aluminum, zirconium, hafnium, tin, columbium, molybdenum, tungsten, ruthenium, germanium, silicon, and erbium.

    摘要翻译: 通过将合金加热至基本上全部的β相范围并在该范围内机械热加工合金,在具有其中的颗粒分散体的α或α-β钛合金中开发出增强的结晶学质地。 机械加工优选通过挤出,轧制或锻造来实现。 颗粒在加工过程中是稳定的,并且在工作温度下防止在再结晶的β相晶粒中形成随机组织。 颗粒优选由稀土元素如铒或钇形成的氧化物,其在制造过程中被引入到合金中。 根据本发明加工的合金优选通过粉末冶金制备,以在加工前实现均匀的微观结构。 特别合适的α-β(但接近α)钛合金含有铝,锆,铪,锡,铌,钼,钨,钌,锗,硅和铒。

    Heat treatment for improved properties of alpha-beta titanium-base alloys
    3.
    发明授权
    Heat treatment for improved properties of alpha-beta titanium-base alloys 有权
    热处理改善了α-β钛基合金的性能

    公开(公告)号:US06284070B1

    公开(公告)日:2001-09-04

    申请号:US09384911

    申请日:1999-08-27

    IPC分类号: C22F118

    CPC分类号: C22F1/183

    摘要: An alpha-beta titanium-base alloy is heat treated to improve its dwell fatigue properties while retaining a good balance of mechanical properties. The heat treatment includes first heating the alpha-beta titanium-base alloy to a first heat-treatment temperature in a first range of from about 70° F. below a beta transus temperature of the alpha-beta titanium-base alloy to the beta transus temperature of the alpha-beta titanium-base alloy, and quenching the alpha-beta titanium-base alloy at a rate of greater than about 200° F. per minute. The alpha-beta titanium-base alloy is second heated to a second heat-treatment temperature in a second range of from about 100° F. to about 400° F. below the beta transus temperature of the alpha-beta titanium-base alloy, and thereafter cooling the alpha-beta titanium-base alloy to ambient temperature at a rate of from about 10° F. per minute to about 200° F. per minute.

    摘要翻译: 对α-β钛基合金进行热处理以改善其驻留疲劳特性,同时保持良好的机械性能平衡。 热处理包括首先将α-β钛基合金加热至低于α-β钛基合金的β转变温度至β转子的约70°F的第一热处理温度 α-β钛基合金的温度,并以大于约200°F /分钟的速率骤冷α-β钛基合金。 在α-β钛基合金的β转变温度之下,将α-β钛基合金第二加热至第二热处理温度,其温度范围为约100°F至约400°F, 然后以约10°F /分钟至约200°F /分钟的速率将α-β钛基合金冷却至环境温度。

    Manufacture of fatigue-resistant hollow articles
    4.
    发明授权
    Manufacture of fatigue-resistant hollow articles 失效
    耐疲劳中空制品的制造

    公开(公告)号:US5630890A

    公开(公告)日:1997-05-20

    申请号:US380533

    申请日:1995-01-30

    IPC分类号: C22F1/02 C22F1/18

    摘要: A hollow article is made by providing and diffusion bonding the opposing parts of an article made of an alpha-beta titanium alloy. Hydrogen is introduced into the surface of an internal cavity before, during, or after diffusion bonding. The article is heat treated with the hydrogen present, typically by solution treating and aging the hydrogen-containing bonded article. The result is the production of a microstructure at the internal surface of the cavity that is resistant to fatigue-crack initiation, while retaining a microstructure throughout the rest of the article that is resistant to fatigue-crack propagation. After heat treating, the hydrogen is removed from the article, and any further heat treating and other operations are completed.

    摘要翻译: 通过提供和扩散粘合由α-β钛合金制成的制品的相对部分制成中空制品。 在扩散接合之前,期间或之后,将氢气引入内腔的表面。 该物品通过存在的氢进行热处理,通常通过溶解处理和老化含氢粘合制品。 结果是在空腔的内表面上产生耐疲劳裂纹引发的微观结构,同时保留了耐疲劳裂纹扩展的整个制品的微观结构。 热处理后,从制品中除去氢,完成任何进一步的热处理和其它操作。

    Method for producing a titanium-base alloy having an oxide dispersion therein
    5.
    发明授权
    Method for producing a titanium-base alloy having an oxide dispersion therein 失效
    一种其中具有氧化物分散体的钛基合金的制造方法

    公开(公告)号:US07763127B2

    公开(公告)日:2010-07-27

    申请号:US11351226

    申请日:2006-02-09

    IPC分类号: C22C14/00

    摘要: A metallic article is prepared by first furnishing at least one nonmetallic precursor compound, wherein all of the nonmetallic precursor compounds collectively containing the constituent elements of the metallic article in their respective constituent-element proportions. The constituent elements together form a titanium-base alloy having a stable-oxide-forming additive element therein, such as magnesium, calcium, scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, and mixtures thereof. The stable-oxide-forming additive element forms a stable oxide in a titanium-based alloy. At least one additive element is present at a level greater than its room-temperature solid solubility limit in the titanium-base alloy. The precursor compounds are chemically reduced to produce an alloy material, without melting the alloy material. The alloy material may be consolidated. The alloy material, or consolidated metallic article, is thereafter desirably exposed to an oxygen-containing environment at a temperature greater than room temperature.

    摘要翻译: 通过首先提供至少一种非金属前体化合物制备金属制品,其中所有非金属前体化合物以其各自的构成元素比例共同含有金属制品的组成元素。 组成元素一起形成其中具有稳定氧化物形成添加元素的钛基合金,例如镁,钙,钪,钇,镧,铈,镨,钕,ium,钐,铕,钆,铽,镝 ,钬,铒,ium,镱和镥,及其混合物。 稳定氧化物形成添加元素在钛基合金中形成稳定的氧化物。 在钛基合金中,至少一种添加元素的含量大于其室温固溶度极限。 前体化合物被化学还原以产生合金材料,而不熔化合金材料。 合金材料可以被固结。 之后,合金材料或固结的金属制品在大于室温的温度下暴露于含氧环境中。

    Producing metallic articles by reduction of nonmetallic precursor compounds and melting
    7.
    发明授权
    Producing metallic articles by reduction of nonmetallic precursor compounds and melting 有权
    通过还原非金属前体化合物并熔化生产金属制品

    公开(公告)号:US08012273B2

    公开(公告)日:2011-09-06

    申请号:US12824666

    申请日:2010-06-28

    IPC分类号: B22F9/18

    摘要: A metallic article is produced by furnishing one or more nonmetallic precursor compound comprising the metallic constituent element(s), and chemically reducing the nonmetallic precursor compound(s) to produce an initial metallic particle, preferably having a size of no greater than about 0.070 inch, without melting the initial metallic particle. The initial metallic particle is thereafter melted and solidified to produce the metallic article. By this approach, the incidence of chemical defects in the metal article is minimized. The melted-and-solidified metal may be used in the as-cast form, or it may be converted to billet and further worked to the final form.

    摘要翻译: 通过提供一种或多种包含金属构成元素的非金属前体化合物和化学还原非金属前体化合物以产生初始金属颗粒,优选具有不大于约0.070英寸 ,而不熔化初始金属颗粒。 然后将初始金属颗粒熔化并固化以制备金属制品。 通过这种方法,金属制品中的化学缺陷的发生率被最小化。 熔融和固化的金属可以铸造形式使用,或者可以转化成坯料并进一步加工成最终形式。

    Fatigue-resistant components and method therefor
    9.
    发明授权
    Fatigue-resistant components and method therefor 无效
    耐疲劳组件及其方法

    公开(公告)号:US07384244B2

    公开(公告)日:2008-06-10

    申请号:US11014611

    申请日:2004-12-16

    IPC分类号: F01D5/14

    摘要: A metallic component, which may be an airfoil, includes at least one treated patch, wherein the entire thickness of the component within the treated patch is in a state of residual compressive stress. A surface-treated area overlaps at least a boundary between the treated patch and the remainder of the component. The surface of the component within the surface-treated area is in a state of residual compressive stress, so as to resist crack initiation at the boundary between the treated patch and the remainder of the component. A method is also provided for making such a component.

    摘要翻译: 可以是翼型的金属部件包括至少一个经处理的贴片,其中处理的贴片内的部件的整个厚度处于残余压应力的状态。 表面处理区域至少与经处理的贴片和部件的其余部分之间的边界重叠。 表面处理区域内的部件的表面处于残余压应力的状态,以抵抗经处理的贴片与部件的其余部分之间的边界处的裂纹开始。 还提供了制造这种组分的方法。