鋁基/AlFe介金屬複合材料之製程與磨耗性質研究

機構典藏 > College of Engineering > Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering > Thesis > Item 987654321/111409

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Title:	鋁基/AlFe介金屬複合材料之製程與磨耗性質研究
Other Titles:	A study on process and wearing properties of Al/AlFe intermetallic composites
Authors:	曾郁峰;Tseng, Yu-Fong
Contributors:	淡江大學機械與機電工程學系碩士班林清彬;Lin, Ching-Bin
Keywords:	鋁基/ AlFe介金屬顆粒複合材料;界面擴散;重複摺疊;退火;磨耗;Al/AlFe Intermetallic particles composites;Interfacial diffusion;Folding;forging;Annealing;hardness;wear
Date:	2016
Issue Date:	2017-08-24 23:52:03 (UTC+8)
Abstract:	AlFe金屬間化合物具有低密度、高比強度、抗氧化和耐熱性，在150℃~350℃工作溫度範圍內可以取代部分應用於航太產業的鈦合金，能顯著地減輕飛行器的重量及降低成本，但是硬脆的AlFe金屬間化合物在拉伸及磨耗易引發微裂紋的產生，進而降低AlFe介金屬的磨耗與力學性能。本研究提出一種新穎的製作方法，使用不同編織型態的鐵網浸鍍鋁，經由重複鍛造、摺疊及中間退火製程，製得鋁基/不同重量百分比AlFe介金屬顆粒型複合材料，並探討不同AlFe介金屬顆粒含量、不同荷重、不同磨耗速率對硬度及磨耗性質之影響，實驗結果硬度隨AlFe介金屬顆粒含量增加而上升。複合材料的磨耗率並不隨AlFe介金屬顆粒含量增加而下降，5.3wt%AlFe介金屬顆粒含量之磨耗率最低，其中PV值為118時磨耗率最高，對應的條件為荷重為98kPa，滑動速率為1.2m/s。PV值為56時磨耗率最低，對應的條件為荷重為19.6kPa，滑動速率為2.87m/s。 AlFe intermetallic compound has low density, high specific strength, high oxidation resistance and heat resistance. It can be replaced by part of the titanium alloy in the aerospace industry at 150℃ - 350℃ working temperature range. It can obviously reduce the weight of the aircraft and keep cost down, but the hard brittle AlFe intermetallic compound easily produce micro-cracks when it’s stretching thus reduce the wear and mechanical properties. This study used repeat forging, folding and intermediate annealing proposes to fabricate an AlFe intermetallic compound reinforced aluminum matrix composite and has been probed the effect of AlFe intermetallic particle contents, loading and sliding speed on wearing properties. The experimental results show that the hardness was increased with increasing AlFe intermetallic particles content and the 5.3wt% content of AlFe intermetallic particle can get the lowest wear rate. When PV (loading x sliding speed) value is 118 had the highest the wear rate corresponding to condition is the load of 98kPa and the sliding speed of 1.2m/s. On the contrary, when PV value is 56 had the lowest the wear rate correspond to condition is the load of 19.6kPa and the sliding speed of 2.87m/s.
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Thesis

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