| 題名: | Effect of multiaxial stress on deformation characteristics of 8090 superplastic aluminum alloy |
| 作者: | 吳泓瑜
Wu, Horng-yu |
| 貢獻者: | 機械工程學系
Mechanical Engineering |
| 關鍵詞: | 超塑性成形;超塑性鋁合金;空孔狀態;金屬流
Superplastic forming;Superlastic aluminum alloy;Cavitation;Metal flow |
| 日期: | 2004 |
| 上傳時間: | 2014-06-27 02:45:33 (UTC+8) |
| 摘要: | 本論文是以視定塑性力學法探討8090鋁鋰合金在多軸應力狀態下之超塑性成形特性。利用不同成形階段之試件，研究在成形過程中，試件的變形狀態、試件厚度分佈及局部應變速率等之情形。實驗結果顯示，柱狀杯形零件在超塑性成形過程中，應該分為變形板片觸底前及觸底後兩個不同階段來探討其變形特性。成形試件中之空孔狀態，除了受到成形速率的影響外，試件較先貼模的部分，空孔量可能因為產生燒結作用造成空孔收縮的現象，而最後導致空孔量的減少。
Effect of multi-axial stress on deformation characteristics of a superplastic aluminum alloy 8090 was studied by use of Visioplasticity in this work. Several interrupted tests were performed to bulge the sheets to various depths for different strain rates |
| 顯示於類別: | [機械工程學系] 期刊論文
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