潤滑劑對5083超塑性鋁合金成形特性之影響

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Title:	潤滑劑對5083超塑性鋁合金成形特性之影響
Authors:	吳泓瑜 Wu, Horng-yu
Contributors:	機械工程學系 Mechanical Engineering
Keywords:	5083超塑性鋁合金;潤滑劑;金屬流;空孔 superplastic 5083 Al alloy;Lubricant;Metal flow;Cavitation
Date:	2004
Issue Date:	2014-06-27 03:05:12 (UTC+8)
Abstract:	本論文的主要工作是探討潤滑劑對5083超塑性鋁合金成形特性的影響。實驗過程中，以110-3 sec-1及210-4 sec-1之成形應變速率與是否添加潤滑劑的不同成形條件，將超塑性板片吹製於盒形模穴中。實驗結果顯示，在變形板片與模具底部接觸後的成形階段中，若未使用潤滑劑，由於有摩擦力的影響，變形板片之金屬流是向最後成形的彎角區域移動，彎角處是完全成形試件中厚度最薄的位置，最大空孔量出現在應變量最大的彎角處。在使用潤滑劑的成形條件下，由於潤滑劑作用使得摩擦力變小，最後成形階段，金屬流會由中央及入模角區域 The purpose of this work is to explore the effect of lubrication on the deformation characteristics of a superplastic 5083 Al alloy during superplastic forming. A series of interrupted experiments were performed to bulge the sheet into a die with a rectan
Appears in Collections:	[Department of Mechanical Engineering] Seminar papers

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