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研究生： 黃政揚
Jheng-Yang Huang
論文名稱： WS2無機奈米管對鎂合金複合材料的機械性質與微觀組織影響之研究
Effect of WS2 inorganic nanotubes on mechanical properties and microstructure of Mg alloy metal matrix composites
指導教授： 黃崧任
Song-Jeng Huang
口試委員: 雷添壽
Tien-Shou Lei
周振嘉
Chen-Chia Chou
林柏州
Po-chou Lin
學位類別： 碩士
Master
系所名稱： 工程學院 - 機械工程系
Department of Mechanical Engineering
論文出版年： 2015
畢業學年度： 103
語文別： 中文
論文頁數： 108
中文關鍵詞： 鎂基複合材料 、機械性質 、WS2奈米管 、重力鑄造 、T4固溶處理 、多壁奈米碳管
外文關鍵詞： Magnesium metal matrix composites (Mg MMCs), Mechanical property, WS2 nanotubes, Die-casting, T4 solid solution treatment, Multi-walled carbon nanotubes (MWCNT)
相關次數： 點閱：335  下載：6 
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    • 鎂合金添加強化相後形成鎂基複合材料具有許多優異的力學特性，當強化相與基底有良好的結合性時，可提高鎂合金的機械性質。
    本研究主要使用之強化相為WS2奈米管，分別對鎂合金AZ31與AZ61在重力鑄造方式下進行攪拌製程來混合強化，在各鑄件經過T4固溶處理後利用拉伸與硬度測試來比較未添加、添加WS2及多壁奈米碳管之材料機械性質及微觀組織之觀察，並探討其破裂之特徵。

    Based on the pre-assumption that reinforcement combines well with matrix, the excellent mechanical characteristics of magnesium metal matrix composites (Mg MMCs) made by adding reinforcement into magnesium provide more advanced mechanical properties than magnesium. This research aims to produce the magnesium metal matrix composite. Under the process of die-casting with stirring method, WS2 nanotubes is the main reinforcement in order to reinforce AZ31 and AZ61. In order to investigate the mechanical properties, microstructure, and the rupture of features, the casting ingots of MMCs reinforced by WS2 nanotubes, multi-walled carbon nanotubes (MWCNT) and raw material processed by T4 solid solution treatment are compared by measuring tensile properties and hardness.

    摘要 I Abstract III 誌謝 V 目錄 VI 圖目錄 X 表目錄 XV 第一章緒論 1 1.1 前言 1 1.2 文獻回顧 3 1.2.1 本實驗室之鎂基複合材料熔煉製程 3 1.2.2 強化相對晶粒組織之影響 4 1.2.3 強化相對機械性質之影響 8 1.2.4 T4固溶處理對合金之影響 13 1.3 文獻整理心得 13 1.4 研究動機與目的 15 第二章鎂合金相關性質 16 2.1 鎂合金的特性 16 2.1.1 鎂合金命名方法 17 2.1.2 添加不同合金元素對鎂合金之影響 18 2.2 鎂基複合材料強化理論 22 2.2.1 晶界強化: 22 2.2.2 熱膨脹係數差異影響: 22 2.2.3 Orowan強化: 22 2.2.4 負荷影響(Load bearing) 23 2.2.5 析出強化: 24 2.2.6 散佈強化: 24 2.2.7 鎂合金熱處理: 24 2.3 鎂合金鑄造 25 2.3.1 重力鑄造法: 26 2.3.2 壓鑄法: 26 2.3.3 真空鑄造法: 26 第三章實驗方法與步驟 27 3.1 實驗方式 27 3.2 實驗流程圖 28 3.3 實驗材料 29 3.4 實驗設備 33 3.4.1 熔煉爐 33 3.4.2 動態拉伸試驗機(Material Test system, MTS) 36 3.4.3 濕式自動研磨/拋光機 37 3.4.4 微型維克氏硬度機(Micro-Vickers hardness tester) 38 3.4.5 光學顯微鏡(Optical Microscopy, OM) 39 3.4.6 高溫熱處理爐 40 3.4.7 X-ray影像分析儀 41 3.4.8 X光繞射分析儀 (X-Ray Diffraction Analyzer, XRD) 42 3.5 鎂基複合材料之製備步驟 43 3.6 試片製作與規劃 44 3.7 拉伸試片製作 45 第四章結果與討論 46 4.1 T4固溶處理對鑄件之影響 46 4.2 WS2強化相對微觀組織之影響 49 4.2.1 金相觀察 49 4.2.2 平均之晶粒尺寸分析 54 4.3 WS2強化相對機械性質之影響 56 4.3.1 硬度實驗 56 4.3.2 拉伸試驗 57 4.3.3 拉伸斷面特徵分析 67 4.4 鑄件缺陷的影像及成份分析 69 4.5 強化機制之貢獻度計算 75 第五章結論 80 第六章 未來研究方向 82 參考文獻 83

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