Abstract In recent years, metal matrix syntactic foams have drawn great attention for its benefits, such as lightweight and energy-absorbing characteristics, of being used as the material of packaging, armors and vehicles. In this paper, a novel compound casting technology is developed to produce steel matrix syntactic foams, which brings in hollow Al2O3 spheres with outer diameters of about O3.11mm, O3.97mm and O4.79mm to make three foams of different densities. Then, the internal microstructure of one produced sample is investigated with X-ray micro-computed tomography. Besides, the quasi-static compressive properties and the deformation characteristics of the three samples are studied with a WAW-1000 testing machine. At last, the relationship between the relative plateau stress and the relative density of the foams is explored and described.

中文翻译：

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钢基复合泡沫创新复合浇注技术及力学性能

摘要 近年来，金属基复合泡沫塑料因其轻质、吸能等优点而被广泛应用于包装、装甲、车辆材料等方面。本文开发了一种新型复合铸造技术生产钢基复合泡沫塑料，引入外径约为O3.11mm、O3.97mm和O4.79mm的空心Al2O3球体，制成三种不同密度的泡沫塑料。然后，用 X 射线显微计算机断层扫描研究一个生产样品的内部微观结构。此外，在WAW-1000试验机上研究了三个试样的准静态压缩性能和变形特性。最后，探讨并描述了相对平台应力与泡沫相对密度之间的关系。