臺灣博碩士論文加值系統

本研究探討摩擦攪拌銲接以不同的旋轉速度與銲接速度組合時，將熱處理型鋁合金進行銲接後，對銲道及周遭的材料性質以金相、硬度變化與分布、拉伸試驗以及衝擊試驗進行分析。同時也觀察不同銲接攪拌棒凸銷形狀對於銲接性質的影響。本研究重要結論有：1.熱處理型鋁合金經摩擦攪拌銲後的銲道硬度分布及銲接前後銲道的機械性質變化、2.銲接前、後熱處理造成銲道的硬度變化情況、3.銲道缺陷形成之原因分析與4.摩擦攪拌造成的材料攪拌流動情況。

In this study, the friction stir welding was combined with different rotation speeds and welding speeds. After the heat-treated aluminum alloy was welded, the metallographic and hardness changes and distributions of the weld bead and surrounding materials were analyzed. At the same time, the influence of the shape of the different welding stir bar pins on the welding properties was also observed.The important conclusions of this study are:1.Hardness distribution of weld bead after friction stir welding of heat-treated aluminum alloy and mechanical properties of weld bead before and after welding, 2. The heat treatment after welding causes the hardness of the weld bead to change, 3. Analysis of the causes of weld bead formation, 4. Stirring flow of material caused by friction stir welding.

中文摘要 ………………………………………………………….. i
英文摘要 ………………………………………………………….. ii
誌謝 ………………………………………………………….. iii
目錄 ………………………………………………………….. iv
表目錄 ………………………………………………………….. vi
圖目錄 ………………………………………………………….. vii
第一章 前言…………………………………………………....... 1
第二章 文獻探討………………………………………………... 2
2.1 摩擦攪拌銲接…………………………………………... 2
2.1.1 摩擦攪拌銲接簡介……………………………………...2
2.1.2 摩擦攪拌銲接特點……………………………………...4
2.2 鋁合金…………………………………………………... 5
2.2.1 鋁合金性質與用途……………………………………...5
2.2.2 熱處理型鋁合金……………………………………… 5
2.2.3 鋁合金銲接性質……………………………………….. 6
2.3 研究動機……………………………………………….. 6
第三章 研究內容與方法………………………………………... 7
3.1 實驗材料…………………………………………….... 7
3.2 實驗儀器…………………………………………….... 7
3.3 實驗規劃…………………………………………….... 14
3.4 實驗流程…………………………………………….... 14
3.5 實驗分析…………………………………………….... 17
3.5.1 銲接試片缺陷檢測與最佳參數……………………….17
3.5.2 銲接後硬度變化及金相……………………………….17
3.5.3 銲接前、後熱處理硬度變化………………………….17
3.5.4 拉伸試驗…………………………………………….... 17
3.5.5 摩擦攪拌銲接示蹤劑分析銲接材料流動…………….18
第四章 實驗結果………………………………………………... 19
4.1 銲接試片缺陷檢測與最佳參數…………...……………19
4.2 銲接硬度分布曲線……………………………………...21
4.2.1 A600-O鋁合金使用平銷銲接之硬度曲線…………... 23
4.2.2 A600-O鋁合金使用螺紋銷銲接之硬度曲線…………. 25
4.2.3 6013 T6鋁合金銲接硬度曲線……………………….... 26
4.2.4 A600-O鋁合金經T6熱處理後硬度曲線………………27
4.3 銲道金相結果……………………………………….......30
4.3.1 A600-O鋁合金平銷銲接金相………………………….30
4.3.2 A600-O鋁合金螺紋銷銲接金相………………………..34
4.4 拉伸試驗………………………………………………...40
4.4.1 平銷拉伸結果…………………………………………40
4.4.2 螺紋銷拉伸結果………………………………………... 43
4.5 金項缺陷………………………………………………...48
4.6 摩擦攪拌銲接示蹤劑分析……………………………55
4.7 銲接實驗結果綜合分析……………………………… 63
第五章 結論……………………………………………………...64
參考文獻 …………………………………………………………...65
英文論文大綱

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