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    • 61. 发明授权
    • Syntactic metal matrix materials and methods
    • 句法金属基体材料及方法
    • US09096034B2
    • 2015-08-04
    • US13445810
    • 2012-04-12
    • Andrew J. ShermanBrian Doud
    • Andrew J. ShermanBrian Doud
    • B32B5/18B21D31/00
    • B22F3/1112B21D31/00B32B5/16B32B5/18B32B5/20C22C32/0036C22C32/0078C22C49/00C22C49/06C22C49/11
    • A syntactic metal foam composite that is substantially fully dense except for syntactic porosity is formed from a mixture of ceramic microballoons and matrix forming metal. The ceramic microballoons have a uniaxial crush strength and a much higher omniaxial crush strength. The mixture is continuously constrained while it is consolidated. The constraining force is less than the omniaxial crush strength. The substantially fully dense syntactic metal foam composite is then constrained and deformation worked at a substantially constant volume. The deformation working is typically performed at a yield strength that is adjusted by way of selecting a working temperature at which the yield strength is approximately less than the omniaxial crush strength of the included ceramic microballoons. This deformation causes at least work hardening and grain refinement in the matrix metal.
    • 由陶瓷微球和基体形成金属的混合物形成除了手征孔隙之外基本上完全致密的复合金属泡沫复合材料。 陶瓷微球具有单轴挤压强度和更高的全向挤压强度。 混合物在固结时不断受到限制。 约束力小于全向挤压强度。 然后基本上完全致密的复合金属泡沫复合材料被约束并以基本恒定的体积进行变形。 变形加工通常以屈服强度进行,该屈服强度通过选择屈服强度近似小于所包含的陶瓷微球的全向挤压强度的工作温度进行调整。 该变形至少导致基体金属中的加工硬化和晶粒细化。