莫來石短纖維增強鋁基復合材料的性能和界面研究.pdf

1、東南大學碩士學位論文莫來石短纖維增強鋁基復合材料的性能和界面研究姓名：陳彩霞申請學位級別：碩士專業(yè)：材料學指導教師：吳申慶20070119東南大學碩士學位論文ABSTRACTinthis卿Ild吼thespecimensoftheMulliteshortfiberandtheAluminashortfiberreinforcedthealmninummatrixcOmlxBitcssveltefabriented時squeezecast

2、ingtheperfom∞011thetensilestmngth，thehardnessandtIIcthermal“pallsi鋤andthethermalcyclingbehavioroftheMII沁shortfiberreinforcedM124Fcomposites，theAltnninashortfiberreinforcedM124FcompositesandtheM124FAhninmnalloylla№been詛ve

3、sIigaledWiththehelpoftheo#calmicroscope，the∞鋤fIingelectramicroscopeandthetranmissionelectronmicroscopetheinterracialslruetureaxldthefracturemWpIl0109yoftlaetensilesl㈣imenwe∞observedTheresultsshow1II缸：Withtheeeramicfibern

4、碡tensilest瑚gthoftlaeeomi’ositesisiIl目哼酬and缸coeffieieraofthemudexpansion(CTE)isreduced腳alsotheresidualstrainandthelengthofllaestrainhyteresisloopof恤ttlemlaleycleprocessisalseducedThereinforcingeffectoftheMull缸shortfiberan

5、dtheAluminashortfiberiscompal“dlivebesidesfileMullite$1110TtfiberreinforeⅨlM124Fa=pos舾sllowsgreattet∞ile蚰magtllest蹴inllyintheelevatedlemperanlreandtheCTEofthcMullitedMl24FcompositesisalittleI聊血啦fllatoftheAimnina—M124Fcom

6、positeso山awjse’the婦把fl刪stmc缸他ofissimilarthereisnoreactioninthein蛐e，itis飄l疆05edthatthereistoom撕可silieoocollaelltintheM124Fmatrixwhichleadstother1％lctiOlllisrestrainedBased∞thea甲口證哪t甜resultsthepcrrormm∞oftheMullitedMl24Fco

7、mposites妣∞m陽啊慨tothoseof廿e^lmimi／M]24Fcompositesandalsothepriceof恤MuUiteshortfilm“iscl目岬tlI柚thatoftheAluminasholrtfibersoitisfeasibletosubstitutetheMulliteshortfiberfor恤eAluminashortfibcfastlacrcinforcememofthcAluminummat