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首页> 外文期刊>Materials Science and Engineering >Al-Al_2O_3 syntactic foams-PartⅡ: Predicting mechanical properties of metal matrix syntactic foams reinforced with ceramic spheres
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Al-Al_2O_3 syntactic foams-PartⅡ: Predicting mechanical properties of metal matrix syntactic foams reinforced with ceramic spheres

机译:Al-Al_2O_3复合泡沫-第二部分:陶瓷球增强金属基复合泡沫的力学性能预测

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摘要

A model is presented that predicts peak stress, minimum stress, average stress, densification strain, and composite density of hollow ceramic sphere-reinforced metal matrix syntactic foams (MMSFs) subjected to unconstrained compression. These mechanical properties are then used to determine the energy absorption per unit volume and energy absorption per unit mass of the MMSFs. The model is based on the mechanical and physical properties of the hollow ceramic spheres and the metal matrix, along with the volume percentage of hollow spheres in the syntactic foam. Comparison of predictions with experimental data for A1-A206 and A1-A380 matrices of various heat treatments reinforced with Al_2O_3 spheres of various sizes, size ranges, and wall thickness to sphere diameter ratios shows good agreement.
机译:提出了一个模型,该模型可预测承受无约束压缩的空心陶瓷球增强金属基质复合泡沫(MMSF)的峰值应力,最小应力,平均应力,致密化应变和复合密度。然后,将这些机械性能用于确定MMSF的每单位体积的能量吸收和每单位质量的能量吸收。该模型基于中空陶瓷球和金属基质的机械和物理特性,以及中空球在句法泡沫中的体积百分比。用各种尺寸,尺寸范围和壁厚与球径比的Al_2O_3球增强的各种热处理的A1-A206和A1-A380矩阵的预测值与实验数据的比较显示出很好的一致性。

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