本文以鋁合金(A6061-T6)、鎂合金(AZ31)、銅合金(JIS C-1100)進行同種金屬與異種金屬摩擦攪拌銲接（FSW）之實驗。銲接時，使用D型之熱電偶量測試片上不同位置的溫度歷程，由量取之溫度歷程找出可銲接成功之預熱溫度及工具頭轉速及進给速度等等。由實驗結果可知，同種鋁材、鎂材及銅材之銲接時預熱後工具頭開始移動之溫度範圍分別為250-3000C、200-2500C及300-3500C，而異種鎂鋁為200-2500C。最後進行銲接試片之硬度試驗及拉伸試驗。由硬度試驗結果，可知銲接前同種鋁材、鎂材及銅材之硬度分別約為102HV、70HV及105HV，銲接後壙塊區之硬度分別約為60HV、62HV及65HV，而異種鋁鎂銲後壙塊區之硬度約為138HV。由拉伸實驗結果，鋁材、鎂材、銅材銲接前之抗拉強度分別約為320MPa、300MPa及280MPa，銲接後之抗拉強度分別約為 160MPa、250MPa及200 MPa，而異種鎂鋁銲接後之抗拉強度約為100MPa。以上之實驗結果可提供做為鋁、鎂及銅材之銲接時之重要參考資料。

In this paper, Friction Stir Welding(FSW) experiments are conducted using similar and dissimilar metals of 6061-T6 Aluminum alloy, AZ-31 Magnesium alloy, JISC-1100 pure copper as specimens. Thermalcouples of type D are used to measure temperature history at different postions of workpiece duing Fsw. Form the temperature history, the preheating temperature and the tool rotation and tool moving speed can be found for a successful welding process. The experimental results show that the temperature ranges for the tool starting to move after preheating are 250-2500C, 200-2500C and 300-3500C for silimar metals of Al alloy, Mg alloy and pure copper and that for of dissimilar of Al alloy and Mg alloy is 200-2500C. Vickers hardness test and tensile test of the welded products are also conducted. The hardness testing results show that the vickers hardness of similar Al alloy, Mg alloy and pure copper sheets beforing weldig are about, 102, 70 and 105HV, respectively. The hardness of the nugget region of similar Al alloy, Mg alloy and pure copper sheets after welding are about 60, 62 and 65 HV, respectively and that for dissimilar of Al alloy and Mg alloy sheets is 138HV. The tensile testing results shows that for similar of Al alloy, Mg alloy and pure copper sheets beforing weldig are about, 320, 300 and 280MPa, respectively. The tensile strenghts of similar Al alloy, Mg alloy and pure copper sheets after welding, are about 160, 250 and 200 MPa, respectively, and that for dissimilar Al and Mg alloys is 100 MPa. The above experimental results can provide information for Fsw of Al, Mg alloys and pure copper.

Keywords：Friction Stir Welding；thermalcouple；temperature career

總目錄
謝致………………………………………………………………………I
中文摘要…………………………………………………………..... ….II
ABSTRACT………………………………………………………………..III
總目錄…………………………………………………………………...V
圖目錄……………………………………………………………….…VII
表目錄…………………………………………………………………..XI
第一章 緒論……………………………………………………………..1
1-1 前言………………………………………………………………...1
1-2 FSW製程簡介…………………………………………………….....2
1-2-1 FSW原理與機構………………………………………….....2
1-2-2 FSW特性…………………………………………….….……7
1-2-3 異種FSW之簡介…………………………………………..10
1-2-4 FSW之參數………………………………………………...11
1-2-5 FSW優缺點……………………………………….…….…..12
1-3 FSW文獻探討……………………………………………………….15
1-4研究動機與目的……………………………………………………18
第二章 研究方法與步驟………………………………………………19
2-1 FSW之實驗…………………………………………………...19
2-2 實驗設備與試片設計………………………….………………..20
2-2-1母材與熱點偶之選擇……………………………………..20
2-2-2 工具頭與機台………………………………….…………23
2-2-3 鑽空位置之設計………………………………………….24
2-3 實驗步驟…………………………………………………….........27
2-3-1 FSW製程……………………………………………………27
2-3-2維氏硬度試驗……………………………………………...28
2-3-3 拉伸試驗………………………………………………….31
第三章 實驗結果與討論………………………………………………33
3-1同種金屬之FSW……………………………………………………34
3-1-1鋁-鋁之FSW………………………………………………..34
3-1-2鎂-鎂之FSW………………………………………………..40
3-1-3銅-銅之FSW………………………………………………..46
3-2異種種金屬之FSW…………………………………………………52
3-2-1鋁鎂之FSW…………………………………………………52
3-2-2鋁銅之FSW…………………………………………………63
第四章 結論……………………………………………………………65
參考文獻………………………………………………………………..67

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