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首页> 外文期刊>Journal of Materials Engineering and Performance >Novel Al-Cu-Mn-Zr-Sc Compositions Exhibiting Increased Mechanical Performance after a High-Temperature Thermal Exposure
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Novel Al-Cu-Mn-Zr-Sc Compositions Exhibiting Increased Mechanical Performance after a High-Temperature Thermal Exposure

机译：新型Al-Cu-Mn-Zr-SC组合物在高温热暴露后表现出增加的机械性能

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摘要

The presence of complex, core-shell Al-3(Zr, Sc) dispersoids in Al-Cu alloys has recently been found to significantly refine theta ' precipitates resulting in increased mechanical properties. The purpose of this work was to take advantage of these effects to develop alloys with enhanced resistance to high-temperature thermal exposure compared to industrial baseline products. A series of Sc-bearing Al-Cu alloys were designed, manufactured using tailored homogenization practices and tested. It was found that a novel Al-Cu-Mn-Zr-Sc alloy exhibited higher tensile strength than AA2219-T8511 after a thermal exposure of 280 degrees C-24 h. The presence of Sc-containing primary intermetallics was also observed in V-bearing compositions.
机译：最近发现Al-Cu合金中的复合物核 - 壳Al-3（Zr，Sc）分散体的存在，以显着细化θ'沉淀物，导致机械性能增加。 与工业基线产品相比，这项工作的目的是利用这些效果来开发具有增强的耐高温热暴露的合金。 设计了一系列SC-CU合金，使用量身定制的均质化实践制造并进行测试。 发现新的Al-Cu-Mn-Zr-Sc合金在280℃-24小时的热暴露后表现出比AA2219-T8519的抗拉强度更高。 在V轴承组合物中也观察到含SC的初级金属间质的存在。

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