Preparation of open-celled aluminum foams by <br />counter-gravity infiltration casting

ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 22 No. 1 January 2012

[PDF] [Flash]

Preparation of open-celled aluminum foams by
counter-gravity infiltration casting

HUO Deng-wei, YANG Juan, ZHOU Xiang-yang, WANG Hui, ZHANG Tai-kang

(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)

Abstract: A novel counter-gravity infiltration casting device and corresponding fabricating process for producing open-celled aluminum foams were presented. The experimental results show that defects such as insufficient or excessive infiltrating can hardly be found in the foam samples prepared by counter-gravity infiltration casting. The foam materials exhibit excellent mechanical properties. The void content strongly affects the mechanical properties of aluminum foams. The yield stress and plateau stress significantly increase with the decrease of void content. Raising pre-heating temperature and increasing packing pressure are effective to lower the void content in aluminum foams.

Key words: open-celled aluminum foams; counter-gravity infiltration casting; void content; mechanical properties

Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU) 湘ICP备09001153号-9