吳錫侃臺灣大學：材料科學與工程學研究所薛鈞尹Shiue, Jun-YinJun-YinShiue2007-11-262018-06-282007-11-262018-06-282007http://ntur.lib.ntu.edu.tw//handle/246246/55251本研究中嘗試接合Ti-6Al-4V(Ti-64)與其它異種金屬。研究中使用Ag-Cu-1.75Ti填料接合Ti50Ni50合金時，於Ti50Ni50端會出現CuNiTi相及Ti3Cu4相。隨著硬銲時間與溫度的增加，銲道中會生成AlCu2Ti相。而Ti-64端主要的反應相為Ti2Cu、TiCu、Ti3Cu4及TiCu4相。改以Ag-Cu-4.5Ti填料接合時之相演化類似，但由於Ti-Cu介金屬層增厚，剪力值下降且較不穩定。使用BAg-8填料接合鍍Cr、Ni的17-4PH不鏽鋼，於Ti-64端的相演化與前述相似，而17-4PH端的Ni膜消失，Ni元素溶入銲道產生反應，可發現CuNiTi相。使用Ag-Cu-1.75Ti填料接合鍍Cr的17-4PH時，則會於17-4PH端生成TiCr2相，此不利於接點之剪力測試強度。此外，實驗中亦發現鍍有Ni膜時會大幅增進填料潤溼性而使剪力測試數值穩定。使用60Ti-15Cu-25Ni填料接合Ti50Al50合金時，於Ti-64端出現一相當厚的Ti rich相，於Ti50Al50端則有α2-Ti3Al和γ-TiAl的固溶區及連續α2-Ti3Al反應相層，中間的殘留填料區主要為Ti2Cu/Ti2Ni相。改以70Ti-15Cu-15Ni填料接合時相基材兩側生成相相似，而銲道中的殘留填料區較少。使用40Ti-20Zr-20Cu-20Ni填料接合時，由於有Zr元素的參與，兩側基材處的相演化過程產生變化，且銲道中的殘留填料區至少有3種以上不同的相而有待後續的研究。This research is focused in infrared vacuum brazing Ti-6Al-4V (Ti-64) and other alloys. For the brazed Ti-64 and Ti50Ni50 joint using the Ag-Cu-1.75Ti filler, CuNiTi and Ti3Cu4 are formed adjacent to the Ti50Ni50 substrate, and AlCu2Ti is observed with increasing the brazing time and/or temperature. Ti2Cu, TiCu, Ti3Cu4 and TiCu4 are found nearby the Ti-64 substrate. The microstructural evolution of the joint using the Ag-Cu- 4.5Ti filler is similar to that of Ag-Cu-1.75Ti filler except for thicker Ti-Cu intermetallics. For the brazed Ti-64 and 17-4PH stainless steel (17-4 PH SS) with Cr/Ni coatings joint using the BAg-8 filler, the microstructure of Ti-64 side is similar to the aforementioned result. For the 17-4PH SS side, the Ni film is disappeared and dissolved into the braze resulting in the CuNiTi phase. It is found that introducing a thin layer of Ni film greatly improves the wettibility of the molten braze on the 17-4PH SS, so shear strengths of joints are more stable. For the use of Ag-Cu-1.75Ti filler to braze 17-4PH SS coated with Cr film, TiCr2 is formed next to the 17-4PH SS, and it impairs shear strength of the brazed joint. For the use of 60Ti-15Cu-25Ni filler to braze Ti50Al50 alloy, two layers are formed: one layer composed of α2-Ti3Al and γ-TiAl mixtures and the other having a continuous α2-Ti3Al phase. The residual filler in the brazed zone is composed of Ti2Cu and Ti2Ni. For 70Ti-15Cu-15Ni filler, the microstructural evolution of the joint is very similar to that of 60Ti-15Cu- 25Ni filler except for the decreased residual filler zone. The phase evolution of the joint brazed by 40Ti-20Zr-20Cu- 20Ni filler is changed because of introducing Zr, and there are at least three different phases formed in the residual filler zone.第一章 前言..................................................................................................................1 第二章 文獻回顧..........................................................................................................4 2-1 合金性質.................................................................................................................4 2-1-1 Ti6Al4V合金..............................................................................................4 2-1-2 17-4不鏽鋼.................................................................................................4 2-1-3 Ti50Ni50 合金............................................................................................6 2-1-4 γ-TiAl 合金.................................................................................................7 2-2 接合研究..................................................................................................................9 2-2-1 Ti-6Al-4V接合............................................................................................9 2-2-2 17-4不鏽鋼接合.......................................................................................10 2-2-2-1 擴散阻隔層對17-4不鏽鋼接合之研究.....................................13 2-2-3 TiNi接合....................................................................................................15 2-2-4 γ-TiAl接合.................................................................................................16 2-3 薄膜相關製程簡介................................................................................................17 2-4 潤濕角分析............................................................................................................18 2-4-1 液體的表面張力........................................................................................18 2-4-2 潤溼角之分析............................................................................................21 2-5 硬銲填料................................................................................................................22 2-5-1 Ag-Cu共晶填料........................................................................................22 2-5-2 Ag-Cu-Ti活性硬銲填料.........................................................................23 2-6 活性硬銲接合........................................................................................................24 2-6-1 固相擴散法................................................................................................25 2-6-2 暫態液相接合法........................................................................................25 2-7 紅外線接合製程....................................................................................................26 2-7-1 紅外線加熱原理........................................................................................26 2-7-2 接合製程....................................................................................................27 第三章 實驗方法.........................................................................................................53 3-1 材料選擇與準備....................................................................................................53 3-1-1 Ti-6Al-4V合金..........................................................................................53 3-1-2 17-4PH不鏽鋼合金..................................................................................53 3-1-3 Ti50Ni50合金............................................................................................53 3-1-4 Ti50Al50合金............................................................................................54 3-2 硬銲填料之選用與準備........................................................................................55 3-2-1 銀基硬銲填料............................................................................................55 3-2-2 鈦基硬銲填料............................................................................................55 3-3 封閉式非平衡磁控物理濺鍍法............................................................................55 3-4 紅外線硬銲接合製程............................................................................................56 3-4-1 實驗設備....................................................................................................56 3-4-2 硬銲接合實驗............................................................................................57 3-4-3 動態潤濕角測試........................................................................................57 3-4-4 持溫時間之控制........................................................................................58 3-4-5 實驗流程....................................................................................................58 3-5 紅外線硬銲接合分析............................................................................................59 3-5-1 分析前之處理............................................................................................59 3-5-2 光學顯微鏡與掃瞄式電子顯微鏡............................................................59 3-5-3 剪力試驗....................................................................................................59 第四章 銀基填料紅外線硬銲接合Ti50Ni50與Ti-6Al-4V合金..............................80 4-1 前言........................................................................................................................80 4-2 實驗使用填料與參數............................................................................................80 4-3 紅外線硬銲接合Ti50Ni50/Ag-Cu-1.75Ti/Ti-6Al-4V合金顯微組織分析..........81 4-4 紅外線硬銲接合Ti50Ni50/Ag-Cu-1.75Ti/Ti-6Al-4V合金機械性質分析..........86 4-5 紅外線硬銲接合Ti50Ni50/Ag-Cu-4.5Ti/Ti-6Al-4V合金顯微組織分析............87 4-6 紅外線硬銲接合Ti50Ni50/Ag-Cu- 4.5Ti /Ti-6Al-4V合金機械性質分析..........91 第五章 銀基填料紅外線硬銲接合17-4PH不鏽鋼與Ti-6Al-4V合金...................128 5-1 前言......................................................................................................................128 5-2 實驗使用填料與參數..........................................................................................128 5-3 紅外線硬銲接合17-4PH/BAg-8/Ti-6Al-4V合金顯微組織分析......................129 5-4 紅外線硬銲接合17-4PH/BAg-8/Ti-6Al-4V合金機械性質分析......................132 5-5 紅外線硬銲接合17-4PH/Ag-Cu-1.75Ti/Ti-6Al-4V合金顯微組織分析...........134 5-6 紅外線硬銲接合17-4PH/Ag-Cu-1.75Ti/Ti-6Al-4V合金機械性質分析...........137 5-7 潤溼性質分析......................................................................................................140 第六章 鈦基填料紅外線硬銲接合Ti50Al50與Ti-6Al-4V合金............................167 6-1前言.........................................................................................................................167 6-2實驗使用填料與製程參數.....................................................................................167 6-3紅外線硬銲接合Ti50Al50/60Ti-15Cu-25Ni/Ti-6Al- 4V合金顯微組織分析......168 6-4 紅外線硬銲接合Ti50Al50/70Ti-15Cu-15Ni/Ti-6Al- 4V合金顯微組織分析.....171 6-5 紅外線硬銲接合Ti50Al50/40Ti-20Zr-20Cu- 20Ni/Ti-6Al-4V合金顯微組織分析...........................................................................................................................173 第七章 結論...............................................................................................................203 參考文獻.......................................................................................................................207en-US紅外線硬銲接合Ti-6Al-4V銀基填料鈦基填料擴散阻隔層Infrared brazingAg-based fillerTi-based fillerdiffusion barriersthesis