Cavitation behavior in superplastic 5083 Al alloy during multiaxial gas blow forming with lubrication

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题名:	Cavitation behavior in superplastic 5083 Al alloy during multiaxial gas blow forming with lubrication
作者:	Sun,PH;Wu,HY;Lee,WS;Shis,SH;Perng,JY;Lee,S
贡献者:	機械工程研究所
关键词:	ALUMINUM-ALLOYS;CAVITY GROWTH;STRESS STATE;MG ALLOY;DEFORMATION;PRESSURE;FLOW
日期:	2009
上传时间:	2010-06-29 18:01:26 (UTC+8)
出版者:	中央大學
摘要:	Despite its importance for industrial applications, the effect of lubrication on the cavitation behavior of superplastic materials has been given little attention. In this paper, a series of experiments were performed regarding bulging superplastic 5083 Al alloy sheet into dies with a cylindrical (cup) and rectangular (pan) die cavity for forming with and without lubrication, the formed parts were then evaluated to determine the effect of lubrication on the cavitation level evolution, thickness distribution, and void distribution. It was found that void shrinkage took place in the overlaid region for both forming with and without lubrication. The maximum void volume fraction could be effectively reduced for forming with lubrication: however, reductions in the maximum void volume fractions for cup forming were less significant than those for pan forming. (C) 2008 Elsevier Ltd. All rights reserved.
關聯:	INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
显示于类别:	[機械工程研究所] 期刊論文

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