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    • 1. 发明申请
    • Method for selecting a reduced-tantalum superalloy composition of matter and article made therefrom
    • 用于选择物质的还原钽超合金组合物和由其制成的制品的方法
    • US20050139295A1
    • 2005-06-30
    • US10812628
    • 2004-03-29
    • Kevin O'HaraWilliam WalstonEarl Ross
    • Kevin O'HaraWilliam WalstonEarl Ross
    • F01D5/28C22C19/05F01D25/00F02C7/00
    • C22C19/057
    • A superalloy article has a composition consisting essentially of, in weight percent, from about 4 to about 12 percent cobalt, from about 3.5 to about 7 percent tungsten, from about 2 to about 9 percent chromium, from about 0.5 to about 4.5 percent tantalum, from about 5.5 to about 7.5 percent aluminum, from 0 to about 5.5 percent rhenium, from about 0.1 to about 1.2 percent titanium, from 0 to about 3 percent molybdenum, from 0 to about 3 percent ruthenium, from about 0.5 to about 2 percent columbium, about 0.01 percent maximum boron, about 0.07 percent maximum carbon, from about 0.3 to about 1 percent hafnium, about 0.01 percent maximum zirconium, about 0.03 percent maximum yttrium, from 0 to about 0.5 percent vanadium, about 0.01 percent maximum cerium, and about 0.01 percent maximum lanthanum, balance nickel and impurity elements. The article is preferably substantially a single crystal or oriented polycrystal in a shape such as a gas turbine blade.
    • 超级合金制品具有以重量百分比计约4至约12%的钴,约3.5至约7%的钨,约2至约9%的铬,约0.5至约4.5%的钽, 约5.5至约7.5%的铝,0至约5.5%的铼,约0.1至约1.2%的钛,0至约3%的钼,0至约3%的钌,约0.5%至约2%的铌 ,约0.01%的最大硼,约0.07%的最大碳,约0.3%至约1%的铪,约0.01%的最大锆,约0.03%的最大钇,0%至约0.5%的钒,约0.01%的最大铈和约 0.01%的最大镧,余量为镍和杂质元素。 该制品优选地基本上是诸如燃气轮机叶片的形状的单晶或取向多晶体。