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研究生： 巫柏翰
Bo-Han Wu
論文名稱： 以即時中子繞射研究鎳基合金Inconel 617 高溫疲勞行為
Temperature-Effect Study on the Fatigue Behavior of Inconel Alloy 617 by in-situ Neutron-Diffraction Investigation
指導教授： 黃爾文
E-Wen Huang
口試委員:
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程與材料工程學系
Department of Chemical & Materials Engineering
論文出版年： 2014
畢業學年度： 102
語文別： 中文
論文頁數： 101
中文關鍵詞： 中子繞射 、疲勞 、拉伸 、鎳基合金
外文關鍵詞： Neutron-diffraction, fatigue, tension, Nickel-based alloy
相關次數： 點閱：22  下載：0 
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    • 本研究以即時中子繞射，研究鎳基超合金Inconel617的高溫疲勞行為。比較室溫、600˚C及850˚C下，疲勞循環應力加載所造成的結構改變。並藉由單軸拉伸實驗結果，比較不同巨觀形變模式所帶來的微結構如晶粒大小及差排衍生的變化。根據這兩個實驗的比較，本論文觀察到巨觀蠕變曲線改變趨勢依環境溫度而異，各溫度下不同形變方式所量到的中子數據也反應出不同的微觀特徵。比較參考文獻，本研究推論造成蠕變不同階段的機制可由中子繞射實驗偵測得到。本研究進一步歸納中子數據特徵，比對典型蠕變曲線中三階段不同的蠕變機制。

    Abstract
    We investigate high temperature creep-fatigue properties of nickel-based superalloy, Inconel 617, by in-situ neutron-diffraction. We examined the microstructure subjected to monotonic and cyclic tensile loading under room temperature, 600˚C and 850˚C, respectively. The variations in microstructure caused by different deformation modes are compared. The trends in macroscopic creep curves subjected to different environmental temperatures show different features. Comparing to classic deformation map, we conclude that different creep stages on this materials is revisited. It is concluded that the main contribution of the increase in creep speed of tertiary creep is due to the increase of dislocation density, but not the variation of the lattice strain.
     

    IV 目錄 中文摘要 .. .. .. I AbstractAbstractAbstractAbstractAbstract Abstract .. .. .. . II 致謝 .. .. .. .. III 目錄 .. .. .. .. IV 表次 .. .. .. .. VI 圖次 .. .. .. . VIIVII 第一章 緒論 .. .. . 1 1-1研究動機與目的 研究動機與目的 研究動機與目的 .. .. 1 1-2研究背景 研究背景 .. .. . 1 1.21.2 -1高溫變形機制 高溫變形機制 .. .. .. 4 1.21.2 -2滑移行為 .. .. . 6 1-3中子繞射實驗 中子繞射實驗 .. .. . 6 1.31.3 -1晶面間距 : 應力 -應變 -殘餘應力 殘餘應力 .. . 8 1.31.3 -2單晶塑性 變形各向異單晶塑性 變形各向異單晶塑性 變形各向異.. 9 1.31.3 -3臨界剪切應力 臨界剪切應力 .. .. .. 9 第二章 材料介紹 .. .. 11 2-1鎳基超合金 鎳基超合金 .. .. 11 2-2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 2 Inconel 617 簡介 .. .. 12. V 第三章 實驗 .. .. .. 13 3-1即時中子繞射實驗 即時中子繞射實驗 即時中子繞射實驗 即時中子繞射實驗 .. .. 13 3-2實驗設計 實驗設計 .. .. .. 15 第四章 結果與討論 .. .. .. 19 4-1單軸拉伸實驗 單軸拉伸實驗 .. .. .. 19 4-1-1室溫單軸拉伸實驗 室溫單軸拉伸實驗 室溫單軸拉伸實驗 .. 20 4-1-2 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 850單軸拉伸實驗 單軸拉伸實驗 .. 25 4-1-3 拉伸實驗總結及討論 拉伸實驗總結及討論 拉伸實驗總結及討論 .. . 33 4-2疲勞實驗 疲勞實驗 .. .. .. 34 4-2-1室溫疲勞實驗 室溫疲勞實驗 .. .. 37 4-2-2 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 8502 600˚C & 850疲勞實驗 .. .. 43 4-2-3 疲勞實驗總結及討論 疲勞實驗總結及討論 疲勞實驗總結及討論 .. . 55 第五章 結論 .. .. .. 62 參考資料 .. .. .. 63 附錄 .. .. .. .. 66

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