两种Al2O3短纤维增强纯Al复合材料拉伸断裂过程与强化机理研究
RESEARCH ON THE FRACTURE PROCESS AND STRENGTH MECHANISM OF AI MATRIX COMPOSITES REINFORCED BY TWO KINDS OF Al2O3 SHORT FIBRES
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摘要: 选用国产Al2O4纤维与英国Saffil纤维怍为增强体,工业纯Al作为基体制成复合材料。在扫描电镜下,进行了微观断裂过程动态观察,并结合强度测定及断口分析探讨了不同情况下的断裂机理。Abstract: Metal matrix composite materials (MMCs)were prepared using commercial pure Al as matrix,and China made Al2O3, short fiber and English Saffil Al2O3 short fiber as reinforcement. Tensile strength of the MMCs was measured. In situ observation of micro-fracture process of the MMCs and fractography of the tensile tested specimens were carried out using SEM from the experimental results, and fracture mechanisms of the MMCs were also discussed.
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