鎂合金管材在溫間加工時擁有較好的成形性，本研究先對鎂板進行溫間單軸拉伸試驗，探討其塑流應力與溫度及應變率之關係。另外將設計一套可在溫間對管材進行軸向進給、擁有背向推力及內壓鼓脹的試驗機台。以此自行設計的溫間鼓脹成形試驗機，配合模擬軟體進行鎂合金AZ61管材之溫間液壓成形試驗，探討不同溫度下不同的成形路徑對產品幾何形狀及成形性之影響。

Magnesium alloy tubes have good formability at elevated temperatures. In this paper, firstly, uniaxial tensile tests are conducted to evaluate the flow stress of AZ61 magnesium alloy at different temperatures and strain rates. Secondly, a hydraulic warm forming machine with axial feeding, counter punch and internal pressure is designed and manufactured. Using this testing machine with the FEM results, experiments of hydraulic forming of AZ61 magnesium alloy tubes at different temperatures are carried out. The effect of loading paths on the product shape and formability at different temperature are discussed.

目錄
中文摘要....................................................................................................I
英文摘要...................................................................................................II
目錄..........................................................................................................III
表目錄......................................................................................................VI
圖目錄.....................................................................................................VII
符號說明..................................................................................................XI
緒論............................................................................................................1
1-1 前言............................................................................................1
1-2 溫間管材液壓成形簡介........................................................... 2
1-3 文獻回顧.....................................................................................4
1-4 本文之目的與架構.....................................................................5
第二章 鎂合金塑流應力數學模式..........................................................8
2-1 前言............................................................................................8
2-2 鎂合金AZ61單軸拉伸試驗.....................................................8
2-2-1 萬能拉伸試驗機...............................................................8
2-2-2 拉伸試片之製作...............................................................9
2-2-3 拉伸試驗參數之規劃.......................................................9
2-3-4 溫間拉伸試驗與結果.....................................................10
2-3 鎂合金AZ61塑流應力數學模式之建立...............................11
2-3-1真實應力與真實應變曲線之求得...................................11
2-3-2塑流應力係數之求得.......................................................14
第三章 溫間管材成形試驗機之設計與製作........................................28
3-1 前言.........................................................................................28
3-2 硬體部份.................................................................................29
3-2-1 基座.................................................................................29
3-2-2 螺旋升降器及其驅動馬達…….....................................30
3-2-3 螺旋升降器支撐用腳架….............................................30
3-2-4 合模用氣壓缸組件.........................................................30
3-2-5 T型三通管件模具及其加熱配件................................31
3-2-6 軸向進給推桿、背向推力推桿等其他接合用零件….32
3-3 油路及加熱系統.....................................................................33
3-3-1 供油幫浦與儲油桶.........................................................34
3-3-2 增壓缸.............................................................................34
3-3-3 熱煤油預熱器.................................................................35
3-3-4 熱煤油….........................................................................36
3-4 控制系統.................................................................................36
第四章 溫間管材成形測試與試驗........................................................53
4-1 前言.........................................................................................53
4-2 溫間管材成形試驗機測試與標準操作程序.........................53
4-2-1軸向進給與背向推力測試..............................................54
4-2-2內壓力測試......................................................................55
4-2-3溫度上升測試..................................................................55
4-2-4溫間管材成形試驗機標準操作程序..............................56
4-3 鎂合金AZ61 T型管件溫間液壓成形模擬.........................58
4-3-1 DEFORM 3D模擬軟體簡介...........................................58
4-3-2模擬設定與模擬結果.......................................................59
4-4 鎂合金AZ61 T型管件溫間液壓成形實驗.........................60
4-4-1實驗目的………..………….............................................60
4-4-2試驗準備…………….......................................................60
4-4-3 150℃鎂合金AZ61 T型管件溫間液壓成形實驗結果...61
4-4-4 250℃鎂合金AZ61 T型管件溫間液壓成形實驗結果...62
4-4-5 常溫鎂合金AZ61 T型管件溫間液壓成形實驗結果…63
第五章 結論..........................................................................................75
5-1 鎂合金AZ61塑流應力數學模式..............................................75
5-2 溫間管材成形試驗機.................................................................76
5-3未來展望......................................................................................77
參考文獻..................................................................................................78

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