深冷變形與陽極處理對6066-T6機械性質的影響

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楊樺成(Hwa-sheng Yong) 查詢紙本館藏

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機械工程學系

論文名稱

深冷變形與陽極處理對6066-T6機械性質的影響
(Effect of Cryogenic deformation and anodized treatment on AA6066-T6 mechanical properties)

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摘要(中)

在這項研究中，鋁合金6066經過退火後深冷鍛造，再進行固溶處理和頂時效處理。深冷鍛造鋁合金與傳統的鋁合金6066-T6合金相比，深冷鍛造鋁合金在延展性增加35％，但在UTS和YS上卻犧牲了大約8％。陽極處理對於6066-T6有/無深冷鍛試片的抗腐蝕能力一併加以量測和討論。

摘要(英)

In this study, AA6066 alloy samples were cryogenically forged after annealing and then subjected to solution and aging treatments. Compared with conventional 6066-T6 alloy samples, the cryogenically forged samples exhibited a 35% increase in elongation but sacrificed about 8% in UTS and YS. The effect of anodization on the corrosion resistance of 6066-T6 with/without cryogenically-forged samples was also investigated, and the results are discussed in this study.

關鍵字(中)

★ 鋁合金6066-T6
★ 深冷鍛造
★ 析出物
★ 陽極處理

關鍵字(英)

★ AA6066-T6
★ cryogenic forging
★ precipitates
★ anodized

論文目次

摘要 ………………………………………………………………………………………………………………………………………I
Abstract……………………………………………………………………………………………………………………………………II
圖目錄 ………………………………………………………………………………………………………………………………………V
表目錄 …………………………………………………………………………………………………………………………………VII
第一章前言………………………………………………………………………………………………………………………………1
第二章文獻回顧……………………………………………………………………………………………………………………2
2-1 Al-Mg-Si簡介………………………………………………………………………………………………………………3
2-1-1 Al-Mg-Si-Cu簡介…………………………………………………………………………………………………4
2-1-2 Al-Mg-Si-Cu合金之析出硬化熱處理…………………………………………………………5
2-1-3 鋁合金深冷變形對於機械性質與析出物影響…………………………………………6
2-1-4 鋁銅合金深冷鍛造…………………………………………………………………………………………………9
2-1-5 鋁鎂矽合金深冷鍛造…………………………………………………………………………………………11
2-2 鋁合金陽極處理…………………………………………………………………………………………………………13
2-2-1 合金元素對鋁合金陽極氧化膜差異……………………………………………………………15
2-2-2 時效後析出物對陽極之影響…………………………………………………………………………19
2-2-3 鋁合金應力腐蝕破壞…………………………………………………………………………………………21
2-3 疲勞破壞的簡介…………………………………………………………………………………………………………22
2-3-1 高週反覆應力對析出物影響…………………………………………………………………………22
2-3-2 鋁合金的疲勞裂縫起始與成長………………………………………………………………………23
2-3-3 動態析出物對疲勞壽命的影響………………………………………………………………………24
2-3-4 鋁合金陽極處理對於疲勞性質的影響………………………………………………………25
第三章實驗步驟…………………………………………………………………………………………………………………27
3-1 實驗材料……………………………………………………………………………………………………………27
3-2 實驗儀器………………………………………………………………………………………………………………………27
3-3 實驗步驟………………………………………………………………………………………………………………………29
第四章　結果與討論…………………………………………………………………………………………………………34
4-1 鋁合金6066有/無深冷鍛造之熱處理……………………………………………………………34
4-1-1 深冷鍛造對硬度與拉伸性質的影響…………………………………………………………34
4-1-2 深冷鍛造後對晶界角度的變化影響……………………………………………………………35
4-1-3 二次相顆粒之電子微探針分析(EPMA)………………………………………………………37
4-1-4 微結構與晶粒尺寸………………………………………………………………………………………………39
4-1-5 二次相顆粒(second phase particles)數目與尺寸量測…………41
4-1-6 TEM微結構觀察………………………………………………………………………………………………………43
4-1-7 T6與CFII-T6之二次相與析出物X-ray繞射分析…………………………………43
4-2 有/無深冷鍛造對6066-T6試片的腐蝕電位測試………………………………………44
4-3 有/無深冷鍛造對6066-T6對S-N曲線量測…………………………………………………49
4-4 陽極處理對6066-T6抗腐蝕能力與疲勞強度的影響………………………50
4-4-1 腐蝕電位與腐蝕電流…………………………………………………………………………………………50
4-4-2 陽極處理對基地氫含量影響…………………………………………………………………………50
4-4-3 陽極處理對S-N曲線的影響……………………………………………………………………………51
第五章結論……………………………………………………………………………………………………………………………52
參考文獻 ……………………………………………………………………………………………………………………………………53

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指導教授

施登士(Teng-shih Shih)

審核日期

2015-7-29

推文