Method for eliminating low cycle fatigue cracking in integrally bladed
disks
    1.
    发明授权
    Method for eliminating low cycle fatigue cracking in integrally bladed disks 失效
    消除整体叶片中低周疲劳裂纹的方法

    公开(公告)号:US4536932A

    公开(公告)日:1985-08-27

    申请号:US443516

    申请日:1982-11-22

    申请人: Roy L. Athey

    发明人: Roy L. Athey

    摘要: Stress relief for the rim of an integrally bladed rotor made from a forging preform is provided by forming a plurality of radially extending circumferentially spaced-apart slots around the periphery of the preform. The slots are forged closed in a subsequent forming step. An oxide layer on the slot surfaces prevents the surfaces from bonding together when forged closed. The blades are formed between slots during the forging or by machining after forging.

    摘要翻译: 通过围绕预成型件的周边形成多个径向延伸的周向间隔开的狭槽,来提供由锻造预成型件制成的整体叶片转子的边缘的应力释放。 在随后的成形步骤中将槽锻造封闭。 狭缝表面上的氧化物层在锻造闭合时防止表面粘合在一起。 在锻造期间或在锻造之后通过机械加工在刀片之间形成刀片。

    Superalloy forging process
    2.
    发明授权
    Superalloy forging process 失效
    超合金锻造工艺

    公开(公告)号:US5693159A

    公开(公告)日:1997-12-02

    申请号:US180755

    申请日:1994-01-10

    IPC分类号: C22C19/05 C22F1/10

    CPC分类号: C22C19/056 C22F1/10

    摘要: A process for producing a fine grain forged superalloy article having a high yield strength at intermediate temperatures. A preferred starting composition comprises, by weight, 15% Cr, 13.6% Co, 4.1% Mo, 4.6% Ti, 2.2% Al, 0.01% C, 0.007% B, 0.07% Zr, balance Ni. This material is forged at a temperature above the gamma prime solvus and at a true strain of at least 0.5. Alternately, the material may be forged below the gamma prime solvus temperature with intermediate super solvus anneals. The overaged material is then worked at a temperature below the gamma prime solvus. The resultant fine grain material is then heat treated or can be further isothermally forged prior to heat treatment to produce complex shapes.

    摘要翻译: 一种在中间温度下具有高屈服强度的细晶粒锻造超合金制品的制造方法。 优选的起始组合物包含15%Cr,13.6%Co,4.1%Mo,4.6%Ti,2.2%Al,0.01%C,0.007%B,0.07%Zr,余量为Ni。 该材料在高于伽玛质子溶液的温度下锻炼,真实应变至少为0.5。 或者,可以用中等超固溶退火将材料锻造成低于伽马质子溶质温度。 然后将过时的材料在低于伽玛质子溶液的温度下进行加工。 然后将所得细晶粒材料进行热处理,或者可以在热处理之前进一步等温锻造以产生复杂形状。