Aluminum matrix composites reinforced by in situ Al2O3 and Al3Zr particles fabricated via magnetochemistry reaction

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 11; pp. 2129 - 2133
• Main Author: 赵玉涛 张松利 陈刚
• Format: Journal Article
• Language: English
• Published: School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China 01.11.2010
• Subjects: A356合金; Al2O3; Al3Zr; 化学反应系统; 原位制备; 脉冲磁场; 铝基复合材料; in situ tensile; aluminum matrix composites; magnetochemistry reaction; Al3Zr; Al2O3
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60429-5

Aluminum matrix composites reinforced by in situ Al2O3 and Al3Zr particles are fabricated from A356-Zr（CO3）2 system via magnetochemistry reaction, and the morphologies, sizes and distributions of the in situ particles as well as the microstructures, mechanical mechanisms of the composites are investigated by XRD, SEM, TEM and in situ tensile tests. The results indicate that with the pulsed magnetic field assistance, the morphologies of the in situ particles are mainly with ball-shape, the sizes are in nanometer scale and the distributions in the matrix are uniform. The interfaces between the in situ particles and the aluminum matrix are net and no interfacial outgrowth is observed. These are due to the strong vibration induced by the applied magnetic field in the aluminum melt, which in turn, accelerates the melt reactions. The effects of the magnetic field on the above contributions are discussed in detail.