Analyses of Structures and Fracture Appearance of Alumina/ Aluminum Silicon Alloy Composites

Liu Zheng  Liu Xiaomei

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Analyses of Structures and Fracture Appearance of Alumina/ Aluminum Silicon Alloy Composites
Issue 5, (1997)
Published： 1997 ，
DOI：

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[1]刘政,刘小梅.氧化铝/铝硅合金复合材料组织与断口形貌分析[J].特种铸造及有色合金,1997(05):12-14.

Liu Zheng Liu Xiaomei. Analyses of Structures and Fracture Appearance of Alumina/ Aluminum Silicon Alloy Composites. [J]. Special Casting & Nonferrous Alloys (5).(1997)
[1]刘政,刘小梅.氧化铝/铝硅合金复合材料组织与断口形貌分析[J].特种铸造及有色合金,1997(05):12-14. DOI：

Liu Zheng Liu Xiaomei. Analyses of Structures and Fracture Appearance of Alumina/ Aluminum Silicon Alloy Composites. [J]. Special Casting & Nonferrous Alloys (5).(1997) DOI：

摘要

利用挤压铸造制备氧化铝／铝硅合金复合材料。研究了复合材料的凝固组织和断口形貌。研究结果表明在复合材料中，纤维分布均匀，氧化铝纤维可作为硅相非自发形核的衬底；氧化铝纤维与铝合金基体之间的界面对材料性能影响很大。改善制备工艺应从控制界面反应和细化组织着手。

Abstract

The solidifying structures and fracture appearance of alumina/aluminum silicon alloy composites manufactured by squeeze casting are studied. The results of study indicate that the distribution of alumina fibers is uniform; the fibers can serve as the site for heterogeneous nucleation of silicon phase; and the interface between the fibers and aluminum alloy matrix has great effect on mechanical properties of the composites. Improving manufacturing techniques should be started with controlling interface reaction and fining the structure of the composites.