Compressive characteristics of closed-cell aluminum foams with different percentages of Er element |
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Authors: | Zhao Wei-min Zhang Zan Wang Yong-ning Xia Xing-chuan Feng Hui Wang Jing |
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Affiliation: | 1. School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China;Key Lab for Micro-and Nano-Scale Boron Nitride Materials in Hebei Province, China;2. School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China;3. CITIC Dicastal Ltd, Qinhuangdao 066011, China |
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Abstract: | In the present study, closed-cell aluminum foams with different percentages of erbium(Er) element were successfully prepared. The distribution and existence form of erbium(Er) element and its effect on the compressive properties of the foams were investigated. Results show that Er uniformly distributes in the cell walls in the forms of Al3 Er intermetallic compound and Al-Er solid solutions. Compared with commercially pure aluminum foam, Er-containing foams possess higher micro-hardness, compressive strength and energy absorption capacity due to solid solution strengthening and second phase strengthening effects. Additionally, the amount of Er element should be controlled in the range of 0.10 wt.%-0.50 wt.% in order to obtain a good combination of compressive strength and energy absorption properties. |
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Keywords: | aluminum foams erbium element compressive property melt foaming method |
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