Effects of Cryogenic Treatment on Microstructure and Properties of Al<sub>2</sub>O<sub>3</sub> Particle and Fibre Hybrid Reinforced Aluminum Matrix Composites

Zhou Xun; Chen Wenge; Gu Chenqing; Luo Qiwen

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Effects of Cryogenic Treatment on Microstructure and Properties of Al₂O₃ Particle and Fibre Hybrid Reinforced Aluminum Matrix Composites
Issue 3, Pages: 185-187(2006)
Published： 2006 ，
DOI：

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[1]周勋,陈文革,谷臣清,罗启文.深冷处理对Al_2O_3陶瓷颗粒纤维增强铝基复合材料的影响[J].特种铸造及有色合金,2006(03):185-187+128.

Zhou Xun, Chen Wenge, Gu Chenqing, et al. Effects of Cryogenic Treatment on Microstructure and Properties of Al₂O₃ Particle and Fibre Hybrid Reinforced Aluminum Matrix Composites. [J]. Special Casting & Nonferrous Alloys (3):185-187(2006)
[1]周勋,陈文革,谷臣清,罗启文.深冷处理对Al_2O_3陶瓷颗粒纤维增强铝基复合材料的影响[J].特种铸造及有色合金,2006(03):185-187+128. DOI：

Zhou Xun, Chen Wenge, Gu Chenqing, et al. Effects of Cryogenic Treatment on Microstructure and Properties of Al₂O₃ Particle and Fibre Hybrid Reinforced Aluminum Matrix Composites. [J]. Special Casting & Nonferrous Alloys (3):185-187(2006) DOI：

摘要

采用预制件挤压铸造制备出Al2O3颗粒纤维双相增强Al基复合材料

采用X衍射仪和扫描电镜研究深冷处理对其显微组织及性能的影响。结果表明:复合材料经深冷处理后虽然硬度下降

但其抗拉强度提高

并表现出某些脆性断裂的特征。这与深冷处理前后Si相的变化有关。

Abstract

particle and fibre hybrid reinforced aluminum matrix composites were prepared by the extruding-infiltration method. Effects of cryogenic treatment on microstructure and mechanical properties of the composites were understood by X-ray and SEM. The results show that although the hardness is decreased

tensile strength of the composites is increased

showing somewhat brittle fracture

which is relevant to Si phase change before-and-after cryogenic treatment.