中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2012年
1期
85-89
,共5页
霍登伟%杨娟%周向阳%王辉%张太康
霍登偉%楊娟%週嚮暘%王輝%張太康
곽등위%양연%주향양%왕휘%장태강
开孔泡沫铝%反重力渗流铸造%空隙度%力学性能
開孔泡沫鋁%反重力滲流鑄造%空隙度%力學性能
개공포말려%반중력삼류주조%공극도%역학성능
open-celled aluminum foams%counter-gravity infiltration casting%void content%mechanical properties
采用一套新颖的反重力渗流装置制备开孔泡沫铝.研究表明,采用反重力渗流法所制备的泡沫铝,表现出优良的力学性能且几乎没有渗流不足与渗流过度的缺陷；泡沫铝中的空隙度对其力学性能的影响很大,泡沫铝的屈服应力与平台应力均随孔隙度的降低而升高;升高预热温度与保压压强可有效降低泡沫铝中的空隙度.
採用一套新穎的反重力滲流裝置製備開孔泡沫鋁.研究錶明,採用反重力滲流法所製備的泡沫鋁,錶現齣優良的力學性能且幾乎沒有滲流不足與滲流過度的缺陷；泡沫鋁中的空隙度對其力學性能的影響很大,泡沫鋁的屈服應力與平檯應力均隨孔隙度的降低而升高;升高預熱溫度與保壓壓彊可有效降低泡沫鋁中的空隙度.
채용일투신영적반중력삼류장치제비개공포말려.연구표명,채용반중력삼류법소제비적포말려,표현출우량적역학성능차궤호몰유삼류불족여삼류과도적결함；포말려중적공극도대기역학성능적영향흔대,포말려적굴복응력여평태응력균수공극도적강저이승고;승고예열온도여보압압강가유효강저포말려중적공극도.
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.
