以即時中子繞射研究鎳基合金Inconel 617 高溫疲勞行為

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姓名

巫柏翰(Bo-Han Wu) 查詢紙本館藏

畢業系所

化學工程與材料工程學系

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)

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摘要(中)

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。

摘要(英)

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.

關鍵字(中)

★ 中子繞射
★ 疲勞
★ 拉伸
★ 鎳基合金

關鍵字(英)

★ Neutron-diffraction
★ fatigue
★ tension
★ Nickel-based alloy

論文目次

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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指導教授

黃爾文(E-Wen Huang)

審核日期

2014-7-21

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