本次研究是將1050鋁用通道轉角Φ=120°，外側弧角Ψ=0°的模子，以路徑A的方式經ECAE擠製12道，累積的總應變量為8.04，擠製溫度分別為RT，100℃，200℃以及250℃。並以TEM做定量分析，觀察其試片X面以及Y面的微結構變化。
在室溫變形時，1050鋁的微結構是以延長的次晶粒為主，大致上沿著ED方向被拉長，且有一定的差排密度。而隨著溫度的上升，除了差排量有明顯的減少之外，在TEM定量分析方面，200℃之前，溫度的影響似乎並不是太顯著，一直到了250℃時，微結構才有明顯的變化。以下是定量分析的統計結果：
1. 隨著擠製溫度上升，次晶粒尺寸會增加，在RT，100℃，200℃以及250℃時，Y面的次晶粒尺寸分別為0.55

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目錄
圖表目錄………………………………………………………………… Ⅰ
二、文獻回顧…………………………………………………………... 2
2-1晶粒細化之方法………………………………………………….. 2
2-2 等徑轉角擠型〈Equal Channel Angular Extrusion, ECAE〉….. 2
2-3 影響ECAE變形之因素…………………………………………. 3
2-3-1 模角效應………………………………………………….. 3
2-3-2 擠製路徑的影響………………………………………….. 5
2-3-3 擠製溫度的影響…………………………………………… 10
2-4 大量應變過程之微結構發展…………………………………….. 13
2-4-1 晶粒分割…………………………………………………… 14
三、 研究目的………………………………………………………….. 16
四、 實驗方法………………………………………………………….. 17
4-1 材料和實驗設備………………………………………………….. 17
4-2 ECAE試棒製作……………………………………………….… 17
4-3 金相觀察………………………………………………………….. 18
4-4 織構分析………………………………………………………….. 18
4-5 TEM分析…………………………………………………………… 18
4-5-1 TEM試片製作…………………………………………………. 18
4-5-2 晶粒尺寸的計算……………………………………………… 19
4-5-3 晶邊界角度的量測…………………………………………… 19
五、 實驗結果……………………………………………………………. 21
5-1 微結構型態…………………………………………………………. 22
5-2 晶粒尺寸與形狀……………………………………………………. 23
5-3邊界角度的分佈情形……………………………………………….. 24
六、 討論…………………………………………………………………. 26
七、 結論………………………………………………………………… 29
八、參考文獻……………………………………………………………… 30
附錄 TEM圖號…………………………………………………………... 73

八、參考文獻
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孫佩鈴，中山大學博士論文(2002)

陳奕琦，中山大學碩士論文(2002)