Effect of Al₂O₃ short fiber on the compressive properties of Zn–22Al foams

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• 作者：Jiaan Liu ; Sirong Yu ; Xianyong Zhu ; Ming Wei ; Song Li ; Yanru Luo ; Yaohui Liu
• 关键词：Metals and alloys ; Foams ; Fibers ; Porosity ; Mechanical properties
• 刊名：Materials Letters
• 出版年：2008
• 出版时间：15 August 2008
• 年：2008
• 卷：62
• 期：21-22
• 页码：3636-3638
• 全文大小：545 K

文摘

The closed-cell Zn-22Al composite foams reinforced by 3 vol. % Al₂O₃ short fibers were fabricated with melt foaming method using CaCO₃ as blowing agent. The distributions of the short fibers in the composite foams were observed by scanning electron microscopy (SEM) and the compressive properties of the composite foams were investigated in quasi-static condition. The compression test indicated that Zn–22Al/Al₂O₃ composite foams show better compressive properties than Zn–22Al alloy foams. The compressive curves of the composite foams exhibit a smooth and no dentate collapse plateau region; the compressive yield stress and energy absorption capacity of the composite foams increase more rapidly than those of Zn–22Al alloy foams with increasing density.