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姓名 黃德維(Te-wei Huang) 查詢紙本館藏 畢業系所 機械工程學系在職專班 論文名稱 5083鋁合金晶粒細化與超塑性研究
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摘要(中) 本研究使用的材料為AA5083-O鋁合金板材,研究主要分為兩部份,第一部份為對AA5083-O鋁合金板材進行軋延。第二部份將軋延後的材料進行退火,以獲得細晶材料,並藉由各種機械性質的測試,來了解材料施予軋延的情況下,對材料整體性質造成的影響及內部微結構的變化。針對鈑材經軋延後的機械性質,分別做了硬度試驗、常溫拉伸試驗、高溫拉伸試驗等測試。
研究結果顯示:5083 鋁合金在經過90%軋延後,加熱至400℃持溫30min條件之退火處理後,能產生小於10μm 之細晶結構,在高溫拉伸部分,於500℃及應變率為1×10-3S-1條件下,材料的伸長量可達到413.33%,呈現優良之超塑性特性。摘要(英) The research adopts the material of AA5083-O sheet alloy to be the subjective and do several experiments for two materials—the rolling sheet alloy and the rolling sheet ally after annealing. With different mechanic tests for these two materials, we find some differences of AA5083-O sheet alloy before and after rolling and its related change of inner microstructure. For the rolling sheet alloy after annealing, we also do experiments of hardness, room-temperature tensile strength and high-temperature tensile strength.
The research shows that the 5083 alloy can produce grain refining structure which is smaller than 10μm when it is processed by 90% rolling, 400℃ heating for 30 minutes and annealing. For high-temperature tensile strength experiment, the elenglation can achieve 413.33% which represents good quality of superplasticity關鍵字(中) ★ 5083鋁合金
★ 軋延
★ 退火
★ 晶粒細化
★ 超塑性
★ 延伸率關鍵字(英) ★ 5083 alloy
★ rolling
★ anneal
★ grain refining
★ superplasticity
★ elenglation論文目次 中文摘要 ……………………………………………………………… i
英文摘要 ……………………………………………………………… ii
誌謝 ……………………………………………………………… iii
目錄 ……………………………………………………………… iv
圖目錄 ……………………………………………………………… v
表目錄 ……………………………………………………………… vi
第一章 前言………………………………………………………… 1
1-1 研究背景…………………………………………………… 1
1-2 材料選用的考量…………………………………………… 3
1-3 本文研究目的及範疇……………………………………… 5
第二章 理論背景與文獻回顧……………………………………… 7
2-1 5083 鋁合金的特性簡介………………………………… 7
2-2 鋁合金之晶粒細化………………………………………… 9
2-3 材料超塑性………………………………………………… 10
2-3-1 金屬超塑性的開發歷程…………………………………… 11
2-3-2 鋁合金之細晶超塑性……………………………………… 12
2-3-3 塑性變形製程……………………………………………… 14
2-3-4 材料拉伸特性……………………………………………… 17
第三章 實驗方法與步驟…………………………………………… 21
3-1 實驗設備…………………………………………………… 21
3-2 實驗材料…………………………………………………… 23
3-3 軋延實驗…………………………………………………… 24
3-4 退火試驗…………………………………………………… 24
3-5 機械性質測試……………………………………………… 25
3-5-1 微硬度試驗………………………………………………… 25
3-5-2 常溫拉伸性質測試………………………………………… 25
3-5-3 高溫拉伸性質測試………………………………………… 26
3-5-4 微結構觀察………………………………………………… 26
第四章 結果與討論………………………………………………… 36
4-1 顯微結構觀察 …………………………………………… 36
4-2 退火處理…………………………………………………… 36
4-3 機械性質測試……………………………………………… 37
4-3-1 硬度試驗…………………………………………………… 37
4-3-2 室溫拉伸試驗……………………………………………… 38
4-4 高溫拉伸特性研究………………………………………… 38
4-4-1 450℃不同應變速率拉伸結果…………………………… 39
4-4-2 500℃不同應變速率拉伸結果…………………………… 39
4-5 高溫拉伸試片之顯微結構觀察…………………………… 39
第五章 結論………………………………………………………… 53
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