Nickel-based superalloy and articles

    公开(公告)号:US10280486B2

    公开(公告)日:2019-05-07

    申请号:US14482811

    申请日:2014-09-10

    Abstract: A nickel-based superalloy composition includes from about 5 to about 7 wt % aluminum, from about 4 to about 8 wt % tantalum, from about 3 to about 8 wt % chromium, from about 3 to about 7 wt % tungsten, from 1 to about 5 wt % molybdenum, from 1.5 to about 5 wt % rhenium, from 5 to about 14 wt % cobalt, from about 0 to about 1 wt % hafnium, from about 0.01 to about 0.03 wt % carbon, from about 0.002 to about 0.006 wt % boron, and balance nickel and incidental impurities. The composition may exhibit a sustained peak low cycle fatigue life at 1800° F./45 ksi of at least about 4000 cycles. The nickel-based superalloy composition may be used in single-crystal or directionally solidified superalloy articles, such as a blade, nozzle, a shroud, a splash plate, and a combustor of a gas turbine engine.

    APPARATUS AND METHOD FOR DIRECT WRITING OF SINGLE CRYSTAL SUPER ALLOYS AND METALS
    50.
    发明申请
    APPARATUS AND METHOD FOR DIRECT WRITING OF SINGLE CRYSTAL SUPER ALLOYS AND METALS 审中-公开
    直接写入单晶超合金和金属的装置和方法

    公开(公告)号:US20170051386A1

    公开(公告)日:2017-02-23

    申请号:US14830759

    申请日:2015-08-20

    Abstract: Methods for direct writing of single crystal super alloys and metals are provided. The method can include: heating a substrate positioned on a base plate to a predetermined temperature using a first heater; using a laser to form a melt pool on a surface of the substrate; introducing a superalloy powder to the melt pool; measuring the temperature of the melt pool; receiving the temperature measured at a controller; and using an auxiliary heat source in communication with the controller to adjust the temperature of the melt pool. The predetermined temperature is below the substrate's melting point. The laser and the base plate are movable relative to each other, with the laser being used for direct metal deposition. An apparatus is also generally provided for direct writing of single crystal super alloys and metals.

    Abstract translation: 提供了直接写入单晶超合金和金属的方法。 该方法可以包括:使用第一加热器将位于基板上的基板加热至预定温度; 使用激光在所述基板的表面上形成熔池; 在熔池中引入超合金粉末; 测量熔池的温度; 接收在控制器处测得的温度; 并使用与控制器通信的辅助热源来调节熔池的温度。 预定温度低于基板的熔点。 激光器和基板可相对于彼此移动,激光用于直接金属沉积。 通常还提供用于直接写入单晶超级合金和金属的装置。

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