本實驗使用的三種鋁材分別為連鑄鋁片（CC鋁材）、DC1300及4N純鋁，其中CC鋁材與DC1300有相似合金成份，但CC鋁材具有較高之合金元素固溶量，至於4N純鋁則是作為對照之基礎。經由適當的部分退火處理後在不同方向作拉伸試驗，發現有明顯的異向性存在。結果顯示提高退火溫度會降低抗拉強度但可增加材料的延展性，提高應變速率會提高強度亦可提升延展性。
比較CC、DC1300的拉伸實驗結果，顯示CC鋁材有較高強度及延展性。進一步利用TEM、EBSD分析微結構，發現兩種材料的晶粒形狀、晶粒尺寸、晶界分佈及高角邊界比例均相近，因此推論這些因素應不是影響兩者機械性質差異的主因，而是CC鋁材有較高合金固溶量所致。由EBSD分析所得到的Schmid factor為45°＞0°＞90°，可以解釋拉伸試驗所得降伏強度45°＞0°＞90°之異向性應是受織構影響。
利用EBSD分析DC1300拉伸試片的變形帶，結果顯示織構不是對稱的。45°方向拉伸試片的變形帶，主要是Copper texture中的兩個變量；而90°方向拉伸試片的變形帶，則是Brass texture中的兩個變量。

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圖表目錄………………………………………………………………..Ⅲ
一、前言……………………………………………….......………....1
二、文獻回顧………………………………………………….......…3
2.1 冷軋的微觀組織………………………………………….…3
2.2 超細晶金屬之機械性質………………………………….....7
2.2.1 細晶鋁之降伏下降現象與路德式變形……………..7
2.2.2 超細晶金屬的延展性………………...………...……9
2.2.3 超細晶金屬的加工硬化行為……………………..…9
2.2.4 超細晶金屬的應變速率敏感值……………………11
2.2.5 超細晶金屬的晶界特性………………………...….11
2.3 電子背向繞射之介紹.………………………….….…........12
2.3.1 EBSD的優點………………………….................….12
2.3.2 EBSD的基本原理與系統裝設組成…….…….........13
2.3.3 與本論文有關的EBSD應用………………………..14
2.4 變形織構……….………………………………………......18
三、研究目的…………………………………………………….....19
四、實驗方法………………..………........................………….......20
4.1 實驗的材料介紹…………………..……………………….20
4.2 退火處理……....……………………………………….......20
4.3 拉伸試驗……....………………………………………...…21
4.4 EBSD試片製作…….……………………………………....21
4.5 TEM試片製作…….………………………………..….......22
4.6 利用TEM量測晶界差角………………………………….22
五、實驗結果………………………………......…………………...25
5.1 拉伸試驗……………………………....…………………...25
5.1.1 DC1300…………………………....………………...25
5.1.2 CC…………………………………...……………....26
5.1.3 4N純鋁……………………………………………...27
5.2 微結構……………………………………………………...29
5.2.1 微結構形態…………………………………………29
5.2.2 次晶粒尺寸…………………………………………31
5.2.3 織構組織……………………………………………32
5.2.4 晶界差角…..………………………………………36
5.3 Schmid factor……………………………….……...………37
5.4 拉伸試片之變形帶觀察……………………...……………39
5.5 拉伸變形後之TEM微結構觀察…………..………………40
5.6 拉伸變形後之EBSD觀察…………………….……………42
5.7 拉伸前後之方位分佈函數……………...………..………..46
六、討論……………………………………………..…….……..…47
6.1 加工硬化與降伏下降現象…………………………….…47
6.2 晶粒尺寸的影響…………...………………..…………..…49
6.3 晶界特性的影響………………………………….……..…49
6.4 Schmid factor與織構組織…………………………...….…50
七、結論………………………………………………....………….51
八、參考文獻……………………..……………………..………….53

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