簡易檢索 / 詳目顯示

研究生: 王毅霖
Wang, Yi-Lin
論文名稱: 7075-T73鋁合金材料於台灣氣候之銹蝕及疲勞行為研究
Study on corrosion and fatigue behaviors of 7075-T73 aluminum alloy under Taiwan climate
指導教授: 崔兆棠
Choi, Siu-Tong
學位類別: 碩士
Master
系所名稱: 工學院 - 航空太空工程學系
Department of Aeronautics & Astronautics
論文出版年: 2007
畢業學年度: 95
語文別: 中文
論文頁數: 66
中文關鍵詞: 交互浸潤銹蝕法孔蝕自然銹蝕法
外文關鍵詞: natural environmental corrosion, corrosion pit, alternative immersion corrosion
相關次數: 點閱:151下載:12
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報
  • 本文針對台灣氣候的特徵,利用交互浸潤銹蝕法和自然銹蝕法研究7075-T73鋁合金的銹蝕行為,然後用動態疲勞試驗機測出經銹蝕
    之鋁合金試片的疲勞壽命,並通過電子顯微鏡觀測其斷裂面從而得出疲勞壽命、銹蝕程度與氣候的關係。從銹蝕的結果可明顯看出鋁合金試片經過交互浸潤法和自然銹蝕法所造成的單位面積重量損失,隨時間增加而線性增長。本研究鋁合金試片的SEM圖片顯示出影響疲勞壽命的主要因素為試片的腐蝕深度和範圍大小。本研究的結果顯示鋁合金試片馬公機場的自然銹蝕情況較其它區域為嚴重。

    Based upon the characteristics of Taiwan climate, this thesis employs “Alternative Immersion Corrosion” as well as “Natural Environmental Corrosion” to study the corrosion behavior of 7075-T73 Aluminum alloy. By using fatigue testing machine, fatigue lifes of specimen are obtained. Through the use of scanning electronic microscope, we could also observe the fracture surfaces so as to study the relationships between the fatigue life and the corrosion degree under Taiwan climate. There is a linear growth of corrosion lost of weight per unit area with time goes by. The study of the specimen of the Aluminum alloy demonstrates that the major factors that impact upon the fatigue life are depth and size of the corrosion. This research has also found out that among different Taiwan airports, the Magong Airport has been experiencing the most serious Aluminum alloy corrosion.

    目 錄 中文摘要..................................................................................................Ⅰ 英文摘要..................................................................................................Ⅱ 致謝..........................................................................................................Ⅲ 表目錄......................................................................................................VI 圖目錄…......................................................................................…….VII 第一章 緒論..............................................................................................1 1.1. 前言..............................................................................................1 1.2. 研究動機......................................................................................2 1.3. 文獻回顧......................................................................................3 1.4. 研究方法......................................................................................6 1.5. 論文架構......................................................................................7 第二章 實驗的裝置、儀器及程序..........................................................8 2.1. 試片前處裡..................................................................................8 2.1.1. 交互浸潤銹蝕法...............................................................9 2.1.2. 自然銹蝕法…...................................................................9 2.2. 各機場鋁合金試片銹蝕資料比較............................................12 2.3. 疲勞試驗....................................................................................13 2.4. SEM原理...................................................................................13 第三章 鋁合金試片疲勞試驗結果分析................................................14 3.1. 交互浸潤法銹蝕試片之疲勞試驗............................................14 3.2. 自然銹蝕法銹蝕試片之疲勞試驗............................................15 第四章 SEM圖形分析與討論...............................................................18 4.1. 交互浸潤法試片之SEM圖形分析結果…..............................18 4.2. 自然銹蝕法試片之SEM圖形分析結果..................................19 第五章 結論............................................................................................20 參考文獻..................................................................................................22 自述..........................................................................................................52 表目錄 表2.1 7075-T73鋁合金裸材經交互浸潤法之銹蝕結果................. 25 表2.2 7075-T73鋁合金試片之放置及取樣時間..............................25 表2.3 放置於各機場之鋁合金試片的單位面積銹蝕重量 損失(g/m2 )................................................................................26 表2.4 放置於各機場之鋁合金試片的單位面積銹蝕 速率(mg/m2 /hr)………………………………………..............26 表3.1 經交互浸潤法銹蝕之鋁合金試片的單位面積腐蝕量與 疲勞壽命...................................................................................27 表3.2 放置於馬公機場經自然銹蝕法銹蝕之鋁合金試片的單位面積腐蝕量與疲勞壽命...................................................................28 表3.3 放置於台北機場經自然銹蝕法銹蝕之鋁合金試片的單位面積腐蝕量與疲勞壽命……….………………..............................29 表3.4 放置於台中機場經自然銹蝕法銹蝕之鋁合金試片的單位面積腐蝕量與疲勞壽命...................................................................30 表3.5 放置於岡山機場經自然銹蝕法銹蝕之鋁合金試片的單位面積腐蝕量與疲勞壽命...................................................................31 圖目錄 圖1.1 阿囉哈客機的MSD問題.........................................................32 圖2.1 ASTM-G44測試系統................................................................32 圖2.2 鋁合金試片架設圖....................................................................32 圖2.3 經自然銹蝕法銹蝕一年後的7075-T73鋁合金 裸材試片....................................................................................33 圖2.4 放置於各機場三個月之鋁合金試片的銹蝕資料....................33 圖2.5 放置於各機場六個月之鋁合金試片的銹蝕資料....................34 圖2.6 放置於各機場九個月之鋁合金試片的銹蝕資料....................34 圖2.7 放置於各機場十二個月之鋁合金試片的銹蝕資料................35 圖2.8 動態萬能試驗機........................................................................35 圖2.9 電子顯微鏡................................................................................36 圖3.1 應力為20 ksi、經交互浸潤法銹蝕之鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖.....................................................37 圖3.2 應力為15 ksi、經交互浸潤法銹蝕之鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖.....................................................37 圖3.3 應力為20 ksi、經自然銹蝕法銹蝕之馬公機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖.....................................37 圖3.4 應力為15 ksi、經自然銹蝕法銹蝕之馬公機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖....................................38 圖3.5 應力為20 ksi、經自然銹蝕法銹蝕之台北機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖....................................38 圖3.6 應力為15 ksi、經自然銹蝕法銹蝕之台北機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖....................................39 圖3.7 應力為20 ksi、經自然銹蝕法銹蝕之台中機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖....................................39 圖3.8 應力為15 ksi、經自然銹蝕法銹蝕之台中機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖....................................40 圖3.9 應力為20 ksi、經自然銹蝕法銹蝕之岡山機場鋁合金試片的 單位面積銹蝕重量損失-疲勞壽命圖....................................40 圖3.10 應力為15 ksi、經自然銹蝕法銹蝕之岡山機場鋁合金試片的單位面積銹蝕重量損失-疲勞壽命圖..............................41 圖4.1 鋁合金試片經交互浸潤法銹蝕1天之斷裂面的SEM圖....41 圖4.2 鋁合金試片經交互浸潤法銹蝕2天之斷裂面的SEM圖....42 圖4.3 鋁合金試片經交互浸潤法銹蝕7天之斷裂面的SEM圖....43 圖4.4 鋁合金試片經交互浸潤法銹蝕14天之斷裂面的SEM圖..44 圖4.5 鋁合金試片經交互浸潤法銹蝕42天之斷裂面SEM圖......44 圖4.6 放置於馬公機場之鋁合金試片經自然銹蝕法銹蝕三個月斷裂面的SEM圖……………………………………………...45 圖4.7 放置於馬公機場、經自然銹蝕法銹蝕六個月之鋁合金試片的斷裂面SEM圖...................................................................46 圖4.8 放置於馬公機場、經自然銹蝕法銹蝕十二個月之鋁合金試片斷裂面SEM圖...................................................................47 圖4-9 放置於台北機場、經自然銹蝕法銹蝕十二個月之鋁合金試片斷裂面SEM圖..................................................................48 圗4-10 放置於台北機場、經自然銹蝕法銹蝕六個月之鋁合金試片斷裂面SEM圖......................................................................48 圖4-11 放置於馬公機場、經自然銹蝕法十二個月之鋁合金試片斷裂面SEM圖..........................................................................49 圖4-12 放置於台北機場、經自然銹蝕法十二個月之鋁合金試片斷裂面SEM圖...........................................................................50 圖4-13 放置於台中機場、經自然銹蝕法十二個月之鋁合金試片斷裂面SEM圖...........................................................................50 圖4-14放置於岡山機場、經自然銹蝕法十二個月之鋁合金試片斷裂面的SEM圖......................................................................51

    [1] H. L. Wang, Evaluation of Multiple Site Damage in Lap Joint Speciments, Ph.D. Thesis, School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN, 1998.
    [2] H. L. Wang, Study on Corrosion Behavior of Aluminum Alloy 7075-T73 under Taiwan Environmental Climate Effect, 國科會國防科技計報告, 台北, 2005.
    [3]楊榮顯,工程材料學, 全華出版社, 台北, 2005
    [4] P. C. Paris, M. P. Gomez and W. P. Anderson, “A Rational Analytic Theory of Fatigue”, The Trend in Engineering, Vol. 13, pp. 9-14, 1961.
    [5] P. C. Paris and F. Erdogan, “A Critical Analysis of Crack Propagation Laws”, Journal of Basic Engineering, Vol. 85, pp. 528-534, 1960.
    [6] M. Falugi, E. Tuegel, C. Brooks, R. Bell and D. Shelton, “A Comparison of the Corrosion/Fatigue Effects on Sealed and Unsealed Longitudinal Fuselage Splices”, Aging Aircraft 2001 Conference Proceeding, Sep.10-13, Orlando, Florida, pp 1~13, 2001.
    [7] R. Kinzie, “Anticipating Damage in the Fleet: Development of a Robust Environmental Severity Index”, Aging Aircraft 2001 Conference Proceedings, Sep. 10-13, Orlando, Florida, pp. 1~8, 2001.
    [8] J. Sheuring and A. F. Grandt, Jr., “Quantification of Corrosion Damage Utilizing a Fracture Mechanics Based Methodology”, the 3rd Joint FAA/DoD/NASA Conference on Aging Aircraft, Albuquerque, New Mexico, September 20-23, 1999.
    [9] J. Sheuring and A. F. Grandt, Jr., “Fracture Mechanics Based Approach for Quantifying Corrosion Damage”, Corporate and Regional Aviation Meeting and Exposition, Wichita, Kansas, April 20-22, 1999.
    [10] R. Fink and F. T. Fink, “PACER LIME:An Environmental Corrosion Severity Classification System”, AFWAL-TR-80-4102 Part Ι, Air Force Wright Aeronautical Laboratories, Wright-Patterson AFB, OH, 1980.
    [11] “ASTM-G44: Standard Practices for Evaluating Stress Corrosion Cracking Resistance of Metals and Alloys by Alternate Immersion in 3.5% Sodium Chloride Solution”, Annual Book of ASTM Standards, Sec.3, Vol.2, pp. 172-175, 1995.
    [12] C. K. Lin, “Corrosion Fatigue Behavior of 7050 Aluminum Alloys in Different Tempers”, Engineering Fracture Mechanics, Vol. 59, pp. 779-795, 1998.
    [13] L. V. Corsetti and D. J. Duquette, “The Effect of Mean Stress and Environment on Corrosion Fatigue Behavior of 7075-T6 Aluminum”, Metallurgical Transactions, Vol. 5, pp. 1087-1093, 1974.
    [14] D. L. DuQuesnay, P. R. Underhill and H. J. Britt, “Fatigue Crack Growth from Corrosion Damage in 7075-T6511 Aluminum Alloy under Aircraft Loading”, International Journal of Fatigue, pp. 371–377, 2003.
    [15] 曹楚南,金屬腐蝕, 牛頓出版社, 台北市, 2001.
    [16] A. D. B. Gingell and J. E. King,“The Effect of Frequency and Microstructure on Corrosion Fatigue Crack Propagation in High Strength Aluminum,”Acta Materialia, Vol. 45, pp. 3855-3870, 1997.
    [17] Y. G. Chun, S. I. Pyun and S. M. Lee, “The Influence of Loading Frequency on the Fatigue Crack Propagation Behaviour of Al-Zn-Mg Alloy at Low Cyclic Stress Intensity Level in 2.5wt% NaCl Solution”, Journal of Materials Science Letters, Vol. 10, pp. 1439 -1442, 1991.
    [18] 莊東漢,材料破損分析, 五南出版社, 台灣, 2007.
    [19] “ASTM-G1: Standard Practices for Preparing, Cleaning, and Evaluating Corrosion Testing Specimens”, Annual Book of ASTM Standards, Sec. 3,Vol. 2, pp. 15-21, 1997.
    [20] 李驛登,掃瞄式電子顯微鏡之原理及功能(上),科儀新知,第十一卷,第一期,1989

    下載圖示 校內:2016-08-30公開
    校外:2016-08-30公開
    QR CODE