Influence of nano and micro particles on the expansion and mechanical properties of aluminum foams

详细信息    查看全文

• 作者：S. Bhogi^a ; ^{santubhogi@gmail.com} ; J. Nampoothiri^b ; K.R. Ravi^b ; M. Mukherjee^a
• 关键词：Tomography ; Mechanical characterization ; Porous materials ; Composites ; Stabilization
• 刊名：Materials Science and Engineering: A
• 出版年：2017
• 出版时间：8 February 2017
• 年：2017
• 卷：685
• 期：Complete
• 页码：131-138
• 全文大小：2197 K
• 卷排序：685

文摘

In this study, the foaming behavior of metal matrix composites (MMCs) containing micron- and nano-sized TiB2 particles was compared. Foaming was achieved by adding blowing agent into the MMC melt at 670 °C. Macrostructural and microstructural characterization of the foams were performed by using X-ray tomography and scanning electron microscopy. Quasi-static compression tests were conducted to analyze the mechanical behavior of the foams. Foams stabilized by nanoparticles showed higher expansion than those stabilized by micron-sized particles indicating a better stabilization by nanoparticles. The foams containing nanoparticles also exhibited better mechanical properties. This is mainly due to the presence of nanoparticles in the microstructure.