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Spray cast Al-Li alloy composition and method of processing
Spray cast Al-Li alloy composition and method of processing
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机译:喷射铸造Al-Li合金组合物和加工方法
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摘要
A composition and method for producing a low density, high stiffness aluminum alloy which is capable of being processed into structural components having a desired combination of tensile strength, fracture toughness and ductility. The method includes the steps of forming, by spray deposition, a solid Al-Li alloy workpiece consisting essentially of the formula Al.sub.bal Li.sub.a Zr.sub.b wherein "a" ranges from greater than about 2.5 to 7 wt %, and "b" ranges from greater than about 0.13 to 0.6 wt %, the balance being aluminum, said alloy having been solidified at a cooling rate of about 10.sup.2 to 10.sup.4 K/sec. The method further includes several variations of selected thermomechanical process steps for: (1) eliminating any residual porosity which may be present in the workpiece as a result of the spray deposition step; and (2) producing components for a wide range of applications.
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机译:用于生产低密度,高刚度铝合金的组合物和方法,该组合物和方法能够加工成具有拉伸强度,断裂韧性和延展性的所需组合的结构部件。该方法包括以下步骤:通过喷涂沉积形成基本上由式Albalbal Lia Zrb组成的固态Al-Li合金工件,其中“ a”的范围大于约2.5至2.5。 7重量%,并且“ b”的范围为大于约0.13至0.6重量%,余量为铝,所述合金已经以约10×2至10×4 K / sec的冷却速率固化。该方法还包括用于选择的热机械处理步骤的几种变型:(1)消除由于喷涂步骤而可能存在于工件中的任何残余孔隙; (2)生产用于广泛应用的组件。
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