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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 1    February 2006

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Effects of heat treatment on dynamic compressive properties and energy absorption characteristics of open-cell aluminum alloy foams
CAO Xiao-qing(曹晓卿)1,2, WANG Zhi-hua(王志华)2, MA Hong-wei(马宏伟)2,ZHAO Long-mao(赵隆茂)2, YANG Gui-tong(杨桂通)2

1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. Institute of Applied Mechanics, Taiyuan University of Technology, Taiyuan 030024, China
Received 16 May 2005; accepted 18 October 2005

Abstract:The effects of heat treatment on the dynamic compressive properties and energy absorption characteristics of open cell aluminum alloy foams (Al-Mg-Si alloy foam and Al-Cu-Mg alloy foam) produced by infiltrating process were studied. Two kinds of heat treatment were exploited: age-hardening and solution heat treating plus age-hardening (T6). The split Hopkinson pressure bar (SHPB) was used for high strain rate compression test. The results show that both age-hardened and T6-strengthened foams exhibit improved compression strength and shortened plateau region compared with that of foams in as-fabricated state under high strain rate compression, and the energy absorption capacity is also influenced significantly by heat treatment. It is worthy to note that omitting the solution treating can also improve the strength and energy absorbed much.

 

Key words: aluminum foam; heat treatment; dynamic property; energy absorption characteristics

ISSN 1672-7029
CN 43-1423/U

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