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| 研究生： |
王冠曇 Wang, Kun-Tan |
|---|---|
| 論文名稱： |
鋅鋁合金微壓印成形之研究 Investigation on Micro-Indentation of Zn-Al Alloy |
| 指導教授： |
李榮顯
Lee, Rong-Shean |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年： | 2003 |
| 畢業學年度： | 91 |
| 語文別： | 中文 |
| 論文頁數： | 60 |
| 中文關鍵詞： | 鋅鋁合金 、微壓印 、微成形 |
| 外文關鍵詞： | micro-identation, micro-forming, Zn-Al alloy |
| 相關次數： | 點閱：75 下載：1 |
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一般尺寸之塑性成形製程之研究在國內已具備基礎，但以微細塑性加工或微成形(micro-forming)製程來製作微小結構件，則少有研究。
本文以矽基材料與模具鋼製作微型模具，對Zn-Al合金進行微壓印成形(micro-indentation)試驗，以探討不同成形溫度與試件尺寸大小對成形負荷與成形高度之影響。並利用有限元素分析軟體DEFORM-3D分析在不同的成形溫度、摩擦係數、材料厚度與模穴幾何尺寸下，對於Zn-Al合金成形特性之影響。
由實驗結果顯示，成形溫度對材料的塑流應力、摩擦係數、成形負荷與成形高度有相當的影響，而試件尺寸大小對成形負荷與成形高度有顯著的影響。惟因矽晶圓模具較脆，故材料可成形溫度需比以模具鋼為模具之材料還高。模擬結果與實驗結果相比較顯示摩擦因子與模穴幾何尺寸均是影響Zn-Al合金在微壓印成形之成形特性的重要參數。模擬之網格尺寸必須與試件之幾何尺寸及晶粒大小大小匹配，才能減少模擬誤差之產生。
Forming technologies for general size parts have been well developed in Taiwan. However, little research work was done in forming of micro-scaled parts in local industry and academy.
In this thesis, silicon-based materials and die steels are used to perform micro-indentation experiments on Zn-Al alloys. Effects of forming temperature and specimen size upon forming load and forming height are studied and corresponding finite-elements simulations are performed in order to obtain the forming characteristics of Zn-Al alloys.
Experimental results show that forming temperature has much effect on flow stress, frictioncoefficient, forming load and forming height. The specimen size
has significant effects on the forming load and forming height. Due to the relatively brittle characteristics of silicon-based dies, higher forming temperatures are needed compared with the conditions using die steel . The simulated results were compared with the experimental results and demonstrated that the friction factor and die cavity geometry are important process parameters during micro-indentation of Zn-Al alloys.The specimen dimension and grain size must match the mesh size of simulation to reduce simulation errors.
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校內：2005-07-30公開校外：2005-07-30公開