軋延與T6處理對Al2O3/6061、SiC/6061鋁基複材磨耗性質影響之研究

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姓名

鍾博仁(Bo-zen Zhong) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

軋延與T6處理對Al2O3/6061、SiC/6061鋁基複材磨耗性質影響之研究
(Effects of Rolling-and-T6-Treatment on the Wear Properties of the Al2O3 and SiC Particulate Reinforced Aluminum Matrix Composites)

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摘要(中)

本論文係由中山科學研究院提供之鑄造Al2O3/6061及SiC/6061鋁基複合材料作為研究對象。Al2O3/6061鋁基複合材料分別進行350℃熱軋延量80%、冷軋延量80%、冷軋延量60%後再經過T6熱處理 (固溶處理530℃/2.5h，時效處理160℃/18h)；SiC/6061鋁基複合材料分別進行20%、40%、60%、80%四種不同之350℃熱軋延量後再經過T6熱處理後，探討不同軋延加工量及T6處理後對此兩種鋁基複合材料磨耗特性之影響。同時，使用掃描式電子顯微鏡觀察拉伸破斷面與磨秏後表面之破壞形態。其乾磨秏試驗條件為荷重25N、往復行程1mm、頻率20Hz時間45分鐘、總磨耗距離108m以及環境溫度室溫及150℃下。
實驗結果顯示，Al2O3/6061及SiC/6061鋁基複合材料經T6處理後硬度及強度皆有明顯的提升。Al2O3/6061鋁基複合材料之磨耗率隨氧化鋁顆粒含量的增加而下降。並且發現20wt%Al2O3/6061鋁基複合材料經過熱軋延80%與T6處理後有最佳的耐磨耗性。鋁基複材高溫150℃磨耗後表面形態主要為黏著及疲勞現象。

摘要(英)

This thesis concludes the wear properties of the casted Al2O3/6061 and SiC/6061 aluminum matrix composites which are provided by the Chungshan Institute of Science and Technology. After different rolling reductions, the composites were T6-heat treated (530℃ solid solution treatment for 2.5 hrs; aged at 160℃ for 18 hrs); Dry wearing tests results are reported. Moreover, the tensile fracture surfaces and morphologies of worn surfaces were observed by SEM. The wear testing parameters include applied loads of 25N; reciprocating stroke of 1 mm; reciprocating frequency of 20 Hz for 45 min; total sliding distance of 108 m; and the test temperatures were at room temperature and 150℃.
After T6 treatment, the hardness of Al2O3/6061 and SiC/6061 aluminum matrix composites’ increase obviously. The wear rates reduce with the increase of Al2O3 particles inclusions. The Al2O3/6061 aluminum-matrix composites with 20% Al2O3 particles inclusions with 80% hot rolling and T6 treatment has the best dry wear resistance. We observed the adhesion and fatigue phenomenon from the primary worn surface morphology of the composites’.

關鍵字(中)

★ 鋁基複合材料
★ Al2O3
★ SiC
★ 乾磨耗
★ 軋延
★ T6熱處理

關鍵字(英)

★ Aluminum matrix composites
★ Al2O3
★ SiC
★ Dry wear
★ Rolling
★ T6 treatment

論文目次

總目錄
中文摘要 I
ABSTRACT II
誌謝 III
總目錄 IV
表目錄 VI
圖目錄 VII
第一章、緒論 1
第一節、鋁基複合材料簡介 2
第二節、鋁基複合材料磨耗的影響因素[18] 2
第三節、強化機構 3
一、散佈強化 3
二、細晶強化 3
三、加工硬化 4
四、固溶強化 4
五、析出強化 5
第四節、磨耗與摩擦簡介 5
第五節、磨耗表面形態 8
第二章、實驗步驟 12
第一節、材料 12
第二節、 T6處理 13
第三節、機械性質分析 13
一、硬度試驗 13
二、拉伸試驗 14
三、磨耗試驗 14
第四節、微觀結構分析 15
一、光學顯微鏡觀察 15
二、掃描式電子顯微鏡觀察 16
三、 X光繞射分析 16
第三章、結果與討論 23
第一節、機械性質分析 23
一、硬度試驗 23
二、拉伸試驗 23
三、磨耗試驗 24
第二節、微觀結構分析 28
一、光學顯微鏡觀察 28
二、掃描式電子顯微鏡觀察 29
三、 X光繞射分析 29
第三節、拉伸破斷面觀察 30
第四節、磨耗表面形態 31
第四章、結論 55
第一節、結論 55
第二節、建議 56
參考文獻 57

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指導教授

李雄(Shyong Lee)

審核日期

2011-6-24

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