Wear-resistant cast aluminum alloy process of producing the same
    1.
    发明授权
    Wear-resistant cast aluminum alloy process of producing the same 失效
    耐磨铸铝合金生产过程相同

    公开(公告)号:US5762728A

    公开(公告)日:1998-06-09

    申请号:US768666

    申请日:1996-12-18

    摘要: To provide a wear resistance comparable with that of the conventional A390 series aluminum alloys, a reduced attacking to a sliding counterpart, and an improved machinability, a wear-resistant cast aluminum alloy comprises: a chemical composition consisting, in weight percentage of: 14.0-16.0 Si, 2.0-5.0 Cu, 0.1-1.0 Mg, 0.3-0.8 Mn, 0.1-0.3 Cr, 0.01-0.20 Ti, 0.003-0.02 P, 1. 5 or less Fe, and the balance of Al and unavoidable impurities in which the Ca content is limited to not more than 0.005; and a microstructure in which a primary Si crystal and Al-Si-Fe-MnCr-based intermetallic compounds are dispersed in the form of a crystallized particle having a diameter of from 5 to 30 gm. A process of producing a wear-resistant cast aluminum alloy includes casting a melt of the alloy composition at a cooling rate of from 50.degree. to 200.degree. C./sec.

    摘要翻译: 为了提供与常规A390系列铝合金相当的耐磨性,减少对滑动对应物的攻击和改进的机械加工性,耐磨铸铝合金包括:以重量百分数:14.0- 16.0Si,2.0-5.0Cu,0.1-1.0Mg,0.3-0.8Mn,0.1-0.3Cr,0.01-0.20Ti,0.003-0.02P,1.5或更低的Fe,余量为Al和不可避免的杂质,其中 Ca含量限制在0.005以下; 以及其中初级Si晶体和Al-Si-Fe-MnCr基金属间化合物以直径为5至30gm的结晶颗粒的形式分散的微结构。 制造耐磨铸铝合金的方法包括以50℃至200℃/秒的冷却速度浇铸合金组合物的熔体。