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聂明明,徐志锋,王振军,余欢,蔡长春,王德清.基体合金对连续Al2O3f/Al复合材料微观组织及拉伸强度的影响[J].稀有金属材料与工程(英文),2018,47(10):3063~3071.[Nie Mingming,Xu Zhifeng,Wang Zhenjun,Yu Huan,Cai Changchun and Wang Deqing.Effect of matrix alloy on microstructure and tensile strength of continuous Al2O3f/Al composite[J].Rare Metal Materials and Engineering,2018,47(10):3063~3071.]
Effect of matrix alloy on microstructure and tensile strength of continuous Al2O3f/Al composite
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Received:December 16, 2016  Revised:March 01, 2017
DOI:
Key words: matrix alloy  continuous Al2O3f/Al composite  density  microstructure  fiber damage  tensile strength
Foundation item:国家自然科学基金资助项目(51365043);轻合金加工科学与技术国防重点学科实验室开放基金资助项目(GF201401002);江西省自然科学基金资助项目(20151BAB206004);
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Nie Mingming,Xu Zhifeng,Wang Zhenjun,Yu Huan,Cai Changchun and Wang Deqing  
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Abstract:
      The vacuum gas pressure infiltration was performed for the continuous Al2O3f/Al composite with the volume fraction of 40%, of which the reinforced material was Nextel610-Al2O3 fiber, Al2O3 fibers were extracted using NaOH solution, the matrix alloys were 1A99, ZL210A, ZL301 and 7075 alloys, the effects of matrix alloy on the density, fiber damage and tensile strength of continuous Al2O3f/Al composites were studied. The results showed that different matrix alloys have obvious influence on the density and microstructure of the composites. The density of continuous Al2O3f/ZL301 composite is highest as 99.2%, and it has the least defect, the density of continuous Al2O3f/1A99 composite is lowest as 96.8%, the main reason for this difference is the wettability between the matrix and the fiber is different. The degree of interface reaction between different matrix and fiber is different. Eventually, the damage degree of the fiber is different. The tensile strength of continuous Al2O3f/1A99, Al2O3f/ZL210A, Al2O3f/ZL301 and Al2O3f/7075 were 465MPa, 479MPa, 680MPa and 389MPa, respectively. The defect, interfacial reaction degree and the fiber damage are the main factors to determine the tensile strength of the composite.