Super alloy with low thermal expansion
    2.
    发明公开
    Super alloy with low thermal expansion 失效
    Superlegierung mit niedrigem Ausdehnungskoeffizient。

    公开(公告)号:EP0533059A1

    公开(公告)日:1993-03-24

    申请号:EP92115504.0

    申请日:1992-09-10

    IPC分类号: C22C30/00 C22C38/10

    CPC分类号: C22C38/10 C22C30/00

    摘要: The invention provides a low thermal expansion alloy which has an excellent high-temperature strength, a low coefficient of thermal expansion and a high notch rupture strength so that the alloy will be the most suitable as a material for components of a gas turbine or as a material connected with a low thermal expansion material.
    The alloy consists essentially of, by weight, 0.2 % or less carbon, 1.0 % or less silicon, 1.0 % or less manganese, 0.5 to 2.95 % chromium, 0.25 to 1.0 % aluminum, 0.5 to 2.5 % titanium, one or both of niobium and tantalum in the range of 3.0 % ≦ Nb+[Ta/2] ≦ 6.0 %, 0.02 % or less boron, 24 to 29.8 % nickel, 20 to 28 % cobalt, and the balance of iron.

    摘要翻译: 本发明提供了一种低热膨胀合金,其具有优异的高温强度,低热膨胀系数和高切口断裂强度,使得该合金将最适合作为燃气轮机部件的材料或作为 材料与低热膨胀材料连接。 该合金基本上由重量比为0.2%或更少的碳,1.0%或更少的硅,1.0%或更少的锰,0.5至2.95%的铬,0.25至1.0%的铝,0.5至2.5%的钛,铌中的一种或两种 和钽的比例为3.0%,Nb + [Ta / 2]≤6.0%,0.02%以下的硼,24〜29.8%的镍,20〜28%的钴,余量的铁。