本文選題：ZL111合金泡沫 + 發(fā)泡劑連續(xù)分散　； 參考：《昆明理工大學(xué)》2015年碩士論文

【摘要】：泡沫鋁是兼具結(jié)構(gòu)和功能為一體的復(fù)合材料,在汽車、航空、生物等領(lǐng)域有廣泛的應(yīng)用前景。但其大規(guī)模應(yīng)用還未能實(shí)現(xiàn),其主要原因與泡沫鋁的性價(jià)比過低有相關(guān)。實(shí)現(xiàn)制備孔結(jié)構(gòu)均勻泡沫鋁方法的連續(xù)化是解決這一問題的有效途徑。本文以熔體法制備泡沫鋁為基礎(chǔ),用ZL111合金為原料,通過自行設(shè)計(jì)的發(fā)泡劑連續(xù)加入分散設(shè)備,進(jìn)行半連續(xù)泡沫鋁制備研究。獲得平均孔徑為3-5mm、孔隙率為70-87%孔結(jié)構(gòu)均勻的泡沫鋁,并對不同孔隙率的泡沫鋁進(jìn)行壓縮性能研究。主要研究結(jié)果如下：(1)設(shè)計(jì)并制造了發(fā)泡劑連續(xù)加入分散裝置一套。(2)通過自行設(shè)計(jì)的裝置對發(fā)泡劑連續(xù)加入和分散,實(shí)現(xiàn)了發(fā)泡劑的均勻分散。其工藝參數(shù)配置：熔體流出速度6.11g/s,攪拌葉片傾角度為30°,TiH2分散溫度為610℃,攪拌速度為3000r/min。(3)通過對ZL111合金泡沫半連續(xù)制備實(shí)驗(yàn),成功地制備了孔結(jié)構(gòu)均勻的ZL111合金泡沫,其平均孔徑為3-5mm,孔隙率為70-87%。獲得了制備ZL111合金泡沫的工藝參數(shù)配置：合金熔化及保溫溫度610℃,Ca含量1.5wt%,合金攪拌保溫時間12min,發(fā)泡劑送入電機(jī)頻率9Hz,發(fā)泡保溫溫度605℃,發(fā)泡保溫時間330s。(4)隨孔隙率的提高,ZL111合金泡沫的密實(shí)化應(yīng)變上升,屈服強(qiáng)度以及能量吸收性都下降�？紫堵蕿�76%-85%的ZL111合金泡沫,其屈服強(qiáng)度最高為12.1MPa,能量吸收最高為5.351 MJ/m3。
[Abstract]:Aluminum foam is a composite material with both structure and function as a whole. It has wide application prospects in the fields of automobile, aviation and biology, but its large-scale application has not been realized, and its main reason is related to the low cost performance of aluminum foam. The realization of the continuous foam aluminum method for making holes is an effective way to solve this problem. In this paper, the foam aluminum was prepared by melt method, and ZL111 alloy was used as the raw material. The preparation of semi continuous foam aluminum was carried out by the self designed foaming agent. The foam aluminum with an average pore size of 3-5mm and the porosity of 70-87% pore structure was uniform. The compression properties of the foam aluminum with different porosity were studied. The results are as follows: (1) the foaming agent is designed and made a series of continuous dispersing devices. (2) the foaming agent is uniformly dispersed and dispersed through a self designed device. The process parameters are configured, the flow rate of the melt is 6.11g/s, the angle of the stirring blade is 30, the TiH2 dispersion temperature is 610, and the stirring speed is 30. 00r/min. (3) through the semi continuous preparation of ZL111 alloy foam, the ZL111 alloy foam with uniform pore structure was successfully prepared. The average pore size of the alloy was 3-5mm and the porosity was 70-87%.. The process parameters of preparation of ZL111 alloy foam were obtained: alloy melting and thermal insulation temperature 610, Ca content 1.5wt%, alloy stirring time 12min, foaming. The agent is fed into the motor frequency 9Hz, the foam insulation temperature is 605 C, the foaming time 330s. (4) increases with the porosity, the ZL111 alloy foam's dense strain rises, the yield strength and the energy absorbability decrease. The ZL111 alloy foam with the porosity of 76%-85% is the highest yield strength of 12.1MPa, and the maximum energy absorption is 5.351 MJ/m3.

【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TB33

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本文編號：1802910