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Fabrication and compressive behavior of open-cell aluminum foams via infiltration casting using spherical CaCl_(2) space-holders

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China Foundry 2022年第2期19卷 89-98页

作者： Tan Wan Gang-qiang Liang Zhao-ming Wang Can-xu Zhou Yuan Liu School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Tsinghua UniversityBeijing 100084China

The infiltration casting fabrication process based on spherical CaCl_(2) space-holders and the compressive behavior including the mechanical performance and energy absorption capacity of open-cell aluminum foams were ***-cell aluminum foams with different porosities in the range of 63.1%to 87.3%can be fabricated by adjusting compression ratios of CaCl_(2) preforms prepared by precision *** compression tests show that a strain-hardening phenomenon always occurs especially for open-cell aluminum foam with low porosity,resulting in the inclining stress-strain curve in the plateau *** energy absorption capacity of open-cell aluminum foam decreases with increasing porosity when compared at the same ***,when compared at a given stress,each foam can absorb the maximal energy among the five foams in a special stress ***,open-cell aluminum foam possesses the maximum energy absorption efficiency at its optimum operating *** this stress condition,the foam can absorb the highest energy compared with other foams at the same stress *** optimum operating stress and the corresponding maximal energy absorption decrease with increasing the *** optimum operating stress for energy absorption can also be determined similarly when taking into consideration of the lightweight extent of foams.

关键词： open-cell aluminum foam CaCl_(2)space-holder infiltration casting energy absorption

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Preparation of big size open-cell aluminum foam board using infiltration casting

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China Foundry 2008年第4期5卷 240-243页

作者： wang Lucai Chen Yuyong Wang Fang Wu Jianguo You Xiaohong School of Materials Science and Engineering Taiyuan University of Science and Technology Taiyuan 030024 China School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China

This paper presents an infiltration casting technique for manufacturing big size open-cell aluminum foam boards. The principle and key technologies of infiltration casting are also analyzed. Based on the previous practice of the small size aluminum foam production, the die for preparing big size aluminum foam boards is designed and manufactured. The experiments on aluminum boards of 300 mm × 300 mm × （20-75） mm, with the pore size ranging from 1.0 to 3.2 mm and average porosity of 60%, have been performed. The experimental results show that a reliable infiltration process depends critically on the pouring temperature of the molten AI-alloy, the preheated temperature of the mould and salt particles and vacuum. Current research explores the possibility of large-scale manufacturing and application of the aluminum foams.

关键词： infiltration casting aluminum foam board

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维普期刊数据库

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Fabrication of Porous Bulk Metallic Glass

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Journal of Materials Science & Technology 2005年第6期21卷 788-790页

作者： Keqiang QIU+ and Yinglei REN School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, China School of Materials Science and Engineering Shenyang University of Technology Shenyang 110023 China

An open-cell porous bulk metallic glass （BMG） with a diameter of at least 6 mm was fabricated by using an U-turn quartz tube and infiltration casting around soluble NaCI placeholders. The pore formation and glassy structure were examined by optical microscopy （OM）, scanning electron microscopy （SEM） and X-ray diffraction （XRD）. The results show that the pores or cells are connected to each other and the specimen is composed of a mostly glassy phase. This paper provides a suitable method for fabrication of porous BMG and BMG with larger size in diameter.

关键词： Porous bulk metallic glass U-turn quartz tube infiltration casting

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