本研究主要在探討非方向性電磁鋼片經不同冷軋製程後對集合組織之影響，並觀察經退火處理後縱深方向集合組織之演化。其中以X光繞射(X-ray diffraction, XRD)極圖分析熱軋退火試片與冷軋試片之巨觀集合組織，並使用背向散射電子繞射(electron backscattered diffraction, EBSD)分析試片之微觀集合組織，以兩種不同角度觀察並了解經不同冷軋量對電磁鋼片集合組織之影響。
根據XRD與EBSD實驗結果，比較不同冷軋量試片之冷軋結構，發現α-fiber比率隨冷軋量的提高而上升，而冷軋量提高使高角度晶界比率上升，且其分佈更加集中且複雜。此外，觀察不同冷軋量試片縱深方向之退火結構後，發現不同冷軋量製程僅對Goss、{111}<112>集合組織有較大影響，其中低冷軋量鋼材對Goss集合組織發展較好，而高冷軋量鋼材對{111}<112>集合組織發展較佳。

In this study, the influence of cold rolling reduction on the recrystallization textures of non-oriented electrical steel (NOES) sheet was studied. The microstructures and textures of the specimens were analyzed by electron backscattered diffraction (EBSD) and X-ray diffraction (XRD) in order to understand the evolution of recrystallization microstructures and textures of the NOES.
The results of macrotexture and microtexture show that the higer cold-rolled reduction process causes the higer α-fiber fraction and high angle boundaries (HABs) fraction. Comparing the annealed structure of different cold-rolled reduction process, it shows that the fraction of Goss orientation in 50% cold-rolled specimen is higher than 85%, 90% cold-rolled specimen, and 85%, 90% cold-rolled reduction process enhance the fraction of {111} <112> orientation.

目錄
目錄 iv
第一章 前言 1
第二章 文獻回顧 2
2.1 非方向性電磁鋼片 2
2.1.1 電磁鋼片的特性與分類 2
2.2 電磁特性 2
2.2.1 基本定義 2
2.2.2 電磁鋼片之電磁特性 3
2.2.3 晶粒尺寸對電磁特性的影響 4
2.2.4 集合組織與電磁特性的關係 4
2.2.5 冷加工與退火對電磁特性的影響 5
2.2.6 添加元素對電磁特性的影響 6
2.3 退火 6
2.3.1 冷加工與退火 6
2.3.2 回復階段 7
2.3.3 再結晶階段 8
2.3.4 晶粒成長階段 8
2.4 集合組織 9
2.4.1 基本定義 9
2.4.2 X光繞射原理與極圖(pole figure) 9
2.4.3 Euler space, Euler angle與方位分佈函數(orientation distribution function, ODF) 10
2.4.4 背向散射電子繞射術(Electron Backscatter Diffraction, EBSD) 11
2.4.5 熱軋與熱軋退火製程對集合組織的影響 12
2.4.6 冷軋製程對集合組織的影響 12
2.4.7 再結晶過程中集合組織的演化 13
2.4.8 以EBSD技術預測潛力再結晶成核位置 14
第三章 實驗目的 16
第四章 實驗方法與步驟 17
4.1 實驗材料 17
4.2 試片製程 17
4.3 試片特性分析 18
4.3.1 微硬度量測 18
4.3.2 XRD量測極圖與集合組織ODF分析計算 19
4.3.3 EBSD之分析 20
第五章 實驗結果與討論 22
5.1 熱軋退火 22
5.2 冷軋 24
5.2.1 冷軋裁減率50% 24
5.2.2 冷軋裁減率85% 24
5.2.3 冷軋裁減率90% 25
5.2.4 討論 26
5.3 微硬度量測 27
5.4 退火結構 28
5.4.1 冷軋裁減率50% 28
5.4.2 冷軋裁減率85% 33
5.4.3 冷軋裁減率90% 37
5.4.4 討論 41
5.5 再結晶成核點預測 43
5.5.1 冷軋裁減率50% 43
5.5.2 冷軋裁減率85% 44
5.5.3 冷軋裁減率90% 45
5.5.4 討論 46
第六章 結論 47
參考文獻 48

參考文獻

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