Superplastic aluminium alloy sheets
    2.
    发明授权
    Superplastic aluminium alloy sheets 失效
    超塑性铝合金板材

    公开(公告)号:US4618382A

    公开(公告)日:1986-10-21

    申请号:US660126

    申请日:1984-10-12

    IPC分类号: C22F1/053 C22F1/057 C22C21/00

    摘要: Sheets of high strength superplastic Al--Zn--Mg alloys or Al--Cu alloys which having a maximum grain size below 30 .mu.m on average are described. These alloy sheets are obtained by a method which is characterized by keeping a homogenized and hot worked ingot of the alloy at two different temperatures for sufficient times whereby a fine grain structure is formed in the alloy to impart superplasticity to the alloy.

    摘要翻译: 描述了平均具有低于30μm的最大粒度的高强度超塑性Al-Zn-Mg合金或Al-Cu合金的片材。 这些合金板通过以下方法获得:其特征在于,将合金的均质化和热加工锭保持在两个不同的温度下足够的时间,由此在合金中形成细晶粒结构以赋予合金超塑性。