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公开(公告)号:US4006011A
公开(公告)日:1977-02-01
申请号:US445963
申请日:1974-02-26
CPC分类号: C22C19/007
摘要: Precipitation hardenable or hardened nickel-cobalt-iron base alloy containing nickel, cobalt, iron, columbium, titanium, aluminum and boron as the only essential elements, characterized by a mean coefficient of linear expansion of about 3.times.10.sup.-.sup.6 /.degree. F to 6.times.10.sup.-.sup.6 /.degree. F from room temperature to its Curie temperature of at least about 600.degree. F to 1000.degree. F or higher. The alloy contains about 35-45% nickel, 13-18% cobalt, 2.5-7.0% columbium, 1.0-4.0% titanium, 0.1-2% aluminum, and a small but essential amount of boron.
摘要翻译: 含有镍,钴,铁,铌,钛,铝和硼作为唯一必需元素的沉淀可硬化或硬化的镍 - 钴 - 铁基合金,其特征在于线性膨胀系数为约3×10 -6 /°F至 6×10 -6 /°F从室温至其居里温度为至少约600°F至1000°F或更高。 该合金含有约35-45%的镍,13-18%的钴,2.5-7.0%的铌,1.0-4.0%的钛,0.1-2%的铝,以及少量必需量的硼。
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公开(公告)号:US3935037A
公开(公告)日:1976-01-27
申请号:US462127
申请日:1974-04-18
申请人: Donald R. Muzyka , Ronald C. Gebeau
发明人: Donald R. Muzyka , Ronald C. Gebeau
CPC分类号: C22C38/54
摘要: An iron-nickel base alloy containing 0.10% Max. carbon, 2% Max. manganese, 1% Max. silicon, 13.5-16% chromium, 24-28% nickel, 1-1.75% molybdenum, 1.6-2.7% titanium, 0.7-1.2% columbium, 0.5% Max. vanadium, 0.35% Max. aluminum, 0.001-0.01% boron, and the balance iron plus incidental impurities having improved strength as compared to A-286 Alloy and capable of attaining at least about 180 ksi yield strength when cold worked as little as about 15% and precipitation hardened. The alloy is especially useful in making large massive parts such as retaining rings which are substantially fully austenitic and nonmagnetic for the rotor windings of very large electric generators.
摘要翻译: 含有0.10%Max。的铁镍基合金。 碳,2%最大 锰,1% 硅,13.5-16%铬,24-28%镍,1-1.75%钼,1.6-2.7%钛,0.7-1.2%铌,0.5%最大。 钒,0.35%最大 铝,0.001-0.01%硼,余量铁加附带杂质与A-286合金相比具有改善的强度,并且当冷加工少至约15%并且沉淀硬化时能够获得至少约180ksi的屈服强度。 该合金特别适用于制造大型大型部件,例如对于非常大的发电机的转子绕组,基本上完全奥氏体和非磁性的保持环。
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公开(公告)号:US4030946A
公开(公告)日:1977-06-21
申请号:US676508
申请日:1976-04-13
申请人: Donald R. Muzyka , Robert F. Walley
发明人: Donald R. Muzyka , Robert F. Walley
CPC分类号: B22F3/1003 , C22C1/0433 , Y10S75/95
摘要: The process prevents prior powder particle boundary delineation by providing one or more surfactant elements which prevent nucleation of carbides at the particle surfaces with the result that carbide precipitation occurs within the powder particles rather than predominantly at the particle surfaces. In one embodiment, a small but effective amount of one or more surfactants is added to prealloyed powder before the powder is enclosed and densified at elevated temperature. In another embodiment, the surfactant is added to the melt of the prealloyed powder prior to atomization. The surfactant should be capable of forming a vapor under the conditions of hot densification, should be a strong oxide and/or sulfide former, must be a weak carbide former, should form oxides and/or sulfides which will not nucleate carbides of other elements, and which, if present in the article made from the powder, will not objectionably affect the desired properties. Useful surfactants include magnesium, barium, calcium, cerium, lanthanum, lithium, neodymium, praseodymium, yttrium, and misch metal.
摘要翻译: 该方法通过提供一种或多种防止颗粒表面碳化物成核的表面活性剂元件来防止现有的粉末颗粒边界划定,结果在粉末颗粒内而不是主要在颗粒表面发生碳化物沉淀。 在一个实施方案中,在将粉末封闭并在升高的温度下致密化之前,向预合金粉末中加入少量但有效量的一种或多种表面活性剂。 在另一个实施方案中,在雾化之前将表面活性剂加入到预合金化粉末的熔体中。 表面活性剂应能在热致密化的条件下形成蒸气,应为强氧化物和/或硫化物,必须为弱碳化物,应形成不会使其它元素的碳化物成核的氧化物和/或硫化物, 如果存在于由粉末制成的制品中,则不会令人反感地影响所需的性能。 有用的表面活性剂包括镁,钡,钙,铈,镧,锂,钕,镨,钇和稀土金属。
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公开(公告)号:US3972713A
公开(公告)日:1976-08-03
申请号:US510621
申请日:1974-09-30
IPC分类号: C22C19/05
CPC分类号: C22C19/055
摘要: A sulfidation-resistant alloy having high stress-rupture strength at about 1350.degree.-1500.degree.F, containing about 0.02-0.08% carbon, 21-26% chromium, 52-58% nickel, 1-3.5% molybdenum, 1.75-3.25% titanium, 0.75- 2.25% aluminum, 0.50-2.00% columbium, up to 0.02% boron and the balance iron.
摘要翻译: 含有约0.02-0.08%的碳,21-26%的铬,52-58%的镍,1-3.5%的钼,1.75-3.25%的碳,在约1350°-1500°F的应力 - 断裂强度高的耐硫化合金, 钛,0.75-2.25%的铝,0.50-2.00%的铌,至多0.02%的硼和余量的铁。
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