Heat treatment of gamma titanium aluminide alloys
    1.
    发明授权
    Heat treatment of gamma titanium aluminide alloys 失效
    γ钛铝合金的热处理

    公开(公告)号:US06231699B1

    公开(公告)日:2001-05-15

    申请号:US08262168

    申请日:1994-06-20

    IPC分类号: C22F118

    CPC分类号: C22C14/00 C22F1/183

    摘要: A gamma titanium aluminide alloy article, is prepared using a piece of a gamma titanium aluminide alloy having a composition capable of forming alpha, alpha-2, and gamma phases. The alpha transus temperature of the gamma titanium aluminide alloy piece is determined. The gamma titanium aluminide alloy piece is consolidated by hot isostatic pressing at a temperature of from about 50 F. to about 250 F. below the alpha transus temperature and at a pressure of from about 10,000 to about 30,000 pounds per square inch, for a duration of from about 1 to about 20 hours. The piece is heat treated at a temperature of from about 5 F. to about 300 F. below the alpha transus temperature for a time sufficient to refine the microstructure and generate a microstructure comprising from about 10 to about 90 volume percent gamma phase. The step of heat treating is conducted at a temperature of from about 45 F. to about 200 F. above the temperature of the step of hot isostatic pressing.

    摘要翻译: 使用一片具有能够形成α,α-2和γ相的组成的γ钛铝化合物合金来制备γ钛铝化物合金制品。 确定γ钛铝化合物片的α转变温度。 γ钛铝化合物片通过热等静压在约50°F至约250°F的温度下固化,低于α转换温度,压力为约10,000至约30,000磅/平方英寸,持续一段时间 为约1至约20小时。 将该片在低于α转换温度的约5°F至约300°F的温度下进行热处理足以精炼微结构并产生包含约10至约90体积%γ相的微结构的时间。 热处理步骤在比热等静压的步骤温度高约45°F至约200°F的温度下进行。