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RAPIDLY SOLIDIFIED HIGH-TEMPERATURE ALUMINUM IRON SILICON ALLOYS
RAPIDLY SOLIDIFIED HIGH-TEMPERATURE ALUMINUM IRON SILICON ALLOYS
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机译:快速凝固的高温铝铁硅合金
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摘要
High-strength, lightweight alloy components, such as automotive components, capable of high temperature performance comprising aluminum, silicon, and iron and/or nickel are provided, along with methods of making such high-strength, lightweight alloy components. A high-energy stream, such as a laser or electron beam, may be selectively directed towards a precursor material to melt a portion of the precursor material in a localized region. The molten precursor material is cooled at a rate of greater than or equal to about 1.0×105 K/second to form a solid high-strength, lightweight alloy component comprising a stable ternary cubic phase having high heat resistance and high strength. The stable ternary phase may be AlxFeySiz, where x ranges from about 4 to about 5 or about 7.2 to about 7.6, y is about 1.5 to about 2.2, and z is about 1. The stable ternary phase may also be Al6Ni3Si.
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机译:提供了具有包括铝,硅,铁和/或镍在内的具有高温性能的高强度轻质合金部件,例如汽车部件,以及制造这种高强度轻质合金部件的方法。高能流,例如激光或电子束,可以被选择性地引向前体材料,以在局部区域中熔化前体材料的一部分。熔融的前驱体材料以大于或等于约1.0×10 5 Sup> K /秒的速度冷却,以形成固态的高强度轻质合金成分,该成分包括具有高热量的稳定三元立方相强度高。稳定的三元相可以是Al x Sub> Fe y Sub> Si z Sub>,其中x的范围为约4至约5或约7.2至约7.6, y为约1.5至约2.2,z为约1。稳定的三元相也可以是Al 6 Sub> Ni 3 Sub> Si。
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