本實驗利用等徑轉角擠型（ECAE）以路徑BC擠製來製造細晶粒鋁，並利用不同的退火條件來取得晶粒尺寸在0.4

In this experimental, we use ECAE with route BC to produce the ultrafine-grain Al and use different annealing temperature to get grain size at 0.4

圖表目錄………………………………………………………………………………I
一、前言………………………………………………………………………………1
二、文獻回顧…………………………………………………………………………3
2.1 Hall-Petch 關係式……………………………………………………………… 3
2.1.1超細晶粒的Hall-Petch關係式解釋……………………………………… 4
2-2 降伏現象………………………………………………………………………..4
2-3 路德氏變形…………………………………………………………………… 5
2-4 剪切變形………………………………………………………………………..6
2-5 超細晶金屬的加工硬化行為…………………………………………………..8
2-6 利用等徑轉角擠型製造超細晶粒材料………………………………………..8
2-7 熱處理………………………………………………………………………….10
三、研究目的 12
四、實驗方法 13
4.1 實驗用材料.........................................................................................................13
4-2 退火處理條件………………………………………………………………….13
4-3 拉伸試驗……………………………………………………………………….13
4-4 變形試片的表面觀察………………………………………………………….14
4-5 微結構分析…………………………………………………………………….14
五、實驗結果 15
5-1 經路徑BC擠製8道之拉伸性質.. ………………………………………..15
5-1-1 室溫下拉伸試驗 15
5-1-2 77K下拉伸試驗 15
5-2經路徑C擠製不同道數之拉伸性質…………………………………….. …..15
5-2-1 室溫下拉伸試驗 16
5-2-2 77K下拉伸試驗 16
5-3 不同擠製路徑相同退火條件之拉伸性質……………………………….........17
5-3-1 室溫下拉伸試驗 17
5-3-2 77K拉伸試驗 17
5-4以路徑BC擠製經拉伸試驗之表面變形現象…………………………………18
5-4-1 室溫拉伸後之表面變形 18
5-4-2 77K拉伸後之表面變形 20
5-5以路徑C擠製經拉伸試驗之表面變形現象 ……………………………..22
5-5-1 室溫拉伸後之表面變形 22
5-5-2 77K拉伸後之表面變形 25
六、討論 27
6-1 變形行為…...…………………………………………………………………. 27
6-2 變形與降伏關係……………………………………………………………… 28
6-3 以不同擠製路徑對拉伸性質的影響………………………………………… 30
6-4 相同擠製路徑、不同擠製道數之影響……………………………………… 31
七、結論 32
八、參考文獻……………………………………………………………………......34

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庾忠義，中山大學博士論文 (2003)

孫佩鈴，中山大學博士論文 (2002)