Recently, aluminum matrix syntactic foams (AMSFs) have become considerably popular due to their special physical and mechanical properties. Since these advanced engineering materials have a significant potential for different industrial applications, they can also be interpreted as alternatives to particle reinforced metal composites and traditional metal foams. This study, different from common laboratory scaled methods used in technical literature, emphasizes the possibility of AMSF fabrication using fully automated industrial-focused cold chamber die casting technology. In this context, 1–2 mm, 2–4 mm, and bimodal (50%vol) expanded glass (EG) reinforced syntactic foam samples were manufactured via a specially designed casting machine. Macro- and micro-observations (optical and SEM analyses) indicated that all fabricated syntactic samples exhibited perfect matrix/filler harmony using the proposed method. Density values of fabricated foams varied from 1.17 to 1.50 g/cm³ depending on EG size range. For the determination of mechanical properties, quasi-static compression tests were performed. Furthermore, T6 heat treatment was applied to some foam samples to comprehend the probable effects of the heat treatment on the compressive properties and fracture behaviors. The results showed that although there was a positive relationship between heat treatment and compressive properties of the fabricated foams, T6 treatment altered the failure styles of the samples by triggering matrix brittleness.

Graphical abstract

中文翻译：

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时效热处理对冷室压铸双峰复合铝泡沫压缩特性的影响

最近，铝基复合泡沫 (AMSF) 由于其特殊的物理和机械性能而变得相当流行。由于这些先进的工程材料在不同的工业应用中具有巨大的潜力，因此它们也可以被解释为颗粒增强金属复合材料和传统金属泡沫的替代品。这项研究与技术文献中使用的常见实验室规模方法不同，强调了使用全自动工业重点冷室压铸技术制造 AMSF 的可能性。在这种情况下，1-2 毫米、2-4 毫米和双峰 (50% vol) 膨胀玻璃 (EG) 增强复合泡沫样品是通过专门设计的铸造机制造的。宏观和微观观察（光学和 SEM 分析）表明，使用所提出的方法，所有制造的句法样品都表现出完美的基质/填料和谐。制造泡沫的密度值从 1.17 到 1.50 g/cm³取决于 EG 尺寸范围。为了确定机械性能，进行了准静态压缩试验。此外，对一些泡沫样品进行了 T6 热处理，以了解热处理对压缩性能和断裂行为的可能影响。结果表明，尽管热处理与制造泡沫的压缩性能之间存在正相关关系，但 T6 处理通过触发基体脆性改变了样品的破坏方式。

图形概要