【作者】 龙文元； 罗燕； 方立高； 张丽攀；

【Author】 LONG Wenyuan LUO Yan FANG Ligao ZHANG Lipan (Department of Material Science and Engineering Nanchang Institute of Aeronautical Technology Nanchang)

【机构】 南昌航空工业学院材料科学与工程学院；

【摘要】 本文采用半固态搅拌铸造法制备铝合金／空心微珠复合材料,对不同铸造方法制备的空心微珠增强铝基复合材料的力学性能进行了研究,并对其拉伸断口形貌进行了扫描电镜分析。结果表明:复合材料的抗拉强度低于基体铝合金,随着空心微珠加入量的增加,复合材料的抗拉强度有所降低,密度减小,比强度增大,韧性降低,使复合材料的断裂形态从塑性断裂发展为脆性断裂。更多还原

【Abstract】 In this paper, cenospheres/Al MMC was fabricated by the stir casting. Mechanical property of cenospheres/Al MMC was studied. And its tensile fractography was observed by means of SEM. The results indicated that with increasing cenospheres volume fraction, the tensile strength and the density of the MMC decreased while the specific strength was increased. The fracture nature of the MMC was becoming fragile from ductile due to the addition of cenospheres.更多还原