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    • 3. 发明申请
    • High Nb, Ta, and Al Creep- and Oxidation-Resistant Austenitic Stainless Steels
    • 高Nb,Ta和Al蠕变和抗氧化奥氏体不锈钢
    • US20080304996A1
    • 2008-12-11
    • US12103837
    • 2008-04-16
    • Michael P. BradyMichael L. SantellaYukinori YamamotoChain-tsuan Liu
    • Michael P. BradyMichael L. SantellaYukinori YamamotoChain-tsuan Liu
    • C22C38/42C22C38/44C22C38/58
    • C22C38/48C22C38/06
    • An austenitic stainless steel HTUPS alloy includes, in weight percent: 15 to 30 Ni; 10 to 15 Cr; 2 to 5 Al; 0.6 to 5 total of at least one of Nb and Ta; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1 W; up to 0.5 Cu; up to 4 Mn; up to 1 Si; 0.05 to 0.15 C; up to 0.15 B; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni wherein said alloy forms an external continuous scale comprising alumina, nanometer scale sized particles distributed throughout the microstructure, said particles comprising at least one composition selected from the group consisting of NbC and TaC, and a stable essentially single phase fcc austenitic matrix microstructure, said austenitic matrix being essentially delta-ferrite-free and essentially BCC-phase-free.
    • 奥氏体不锈钢HTUPS合金包括:重量百分比:15至30Ni; 10〜15 Cr; 2至5铝; 0.6〜5%的Nb和Ta中的至少一种; 不超过0.3的Ti + V组合; 最多3 Mo; 最多3公司; 高达1W; 高达0.5 Cu; 高达4 Mn; 高达1 Si; 0.05〜0.15℃ 高达0.15B; 高达0.05 P; 最多1个Y,La,Ce,Hf和Zr中的至少一个; 小于0.05 N; 和Fe基,其中Fe的重量百分比大于Ni的重量百分比,其中所述合金形成包含分布在整个微结构中的纳米尺度尺寸的氧化铝的外部连续刻度,所述颗粒包含至少一种选自NbC 和TaC,以及基本稳定的单相fcc奥氏体基体显微组织,所述奥氏体基体基本上不含铁素体,并且基本上不含BCC相。
    • 8. 发明授权
    • Intermetallic alloy welding wires and method for fabricating the same
    • 金属间合金焊丝及其制造方法
    • US5525779A
    • 1996-06-11
    • US71911
    • 1993-06-03
    • Michael L. SantellaVinod K. Sikka
    • Michael L. SantellaVinod K. Sikka
    • B23K35/02B23K35/30B23K9/23
    • B23K35/0283B23K35/3033B23K35/3093
    • Welding wires for welding together intermetallic alloys of nickel aluminides, nickel-iron aluminides, iron aluminides, or titanium aluminides, and preferably including additional alloying constituents are fabricated as two-component, clad structures in which one component contains the primary alloying constituent(s) except for aluminum and the other component contains the aluminum constituent. This two-component approach for fabricating the welding wire overcomes the difficulties associated with mechanically forming welding wires from intermetallic alloys which possess high strength and limited ductilities at elevated temperatures normally employed in conventional metal working processes. The composition of the clad welding wires is readily tailored so that the welding wire composition when melted will form an alloy defined by the weld deposit which substantially corresponds to the composition of the intermetallic alloy being joined.
    • 用于将镍铝化物,镍 - 铁铝化物,铁铝化物或铝 - 铝化物的金属间合金焊接在一起并且优选地包括另外的合金成分的焊丝被制造为双组分包覆结构,其中一个部件包含初级合金成分, 铝除外,其他成分含有铝成分。 这种用于制造焊丝的双组分方法克服了在通常在常规金属加工工艺中通常使用的高温下具有高强度和有限延展性的金属间合金的机械地形成焊丝相关的困难。 包层焊丝的组成很容易定制,使得焊丝组合物在熔化时将形成由焊接沉积物限定的合金,其基本上对应于正在接合的金属间合金的组成。