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Aging behavior of AlNp/2024Al composites fabricated by squeeze casting 被引量：1

Aging behavior of AlNp/2024Al composites fabricated by squeeze casting
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摘要 2024 aluminum matrix composites reinforced with different size AlN particles (0.5, 4 and 10μm) were fabricated by the squeeze-casting technology. The aging behavior and microstructure of AlNp/2024Al composites were investigated by Brinell hardness measurement and transmission electron microscopy (TEM). The results show that the precipitation sequence of AlNp/2024Al composites is similar to that of the matrix alloy aged at 160 and 190℃, but the age hardening rate of composites is improved, and the AlN particles with large size promote the precipitation process more obviously, in comparison with smaller AlN particles. With increasing temperature, the precipitation processes are accelerated, and the time to reach the peak hardness is shortened. The acceleration of the formation of GP region and phase S' in the composites is attributed to the interfaces (between particles and the matrix) and the high density of dislocations introduced by addition of AlN particles. 2024 aluminum matrix composites reinforced with different size AIN particles （0.5, 4 and 10 μm） were fabricated by the squeeze-casting technology. The aging behavior and microstructure of AINp/2024AI composites were investigated by Brinell hardness measurement and transmission electron microscopy （TEM）. The results show that the precipitation sequence of AINJ2024AI composites is similar to that of the matrix alloy aged at 160 and 190 ℃, but the age hardening rate of composites is improved, and the AIN particles with large size promote the precipitation process more obviously, in comparison with smaller AIN particles. With increasing temperature, the precipitation processes are accelerated, and the time to reach the peak hardness is shortened. The acceleration of the formation of GP region and phase S＇ in the composites is attributed to the interfaces （between particles and the matrix） and the high density of dislocations introduced by addition of AIN particles.
作者 武高辉 陈国钦 姜龙涛 栾佰峰 N.KONO T.HAITANI
机构地区 School of Materials Science and Engineering Department of Metallurgical Engineering
出处 《中国有色金属学会会刊：英文版》 CSCD 2006年第A03期1450-1454,共5页 Transactions of Nonferrous Metals Society of China
基金 Projects(59771014 50071019) supported by the National Natural Science Foundation of China
关键词 时效 铝 金属加工 铸造工艺 aluminum alloy metal matrix composite AIN particle squeeze casting aging behavior
分类号 TG249 [金属学及工艺—铸造]
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参考文献18

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同被引文献17

  • 1王秀芳,武高辉,姜龙涛,耿洪滨.冷热循环处理对SiCp/2024Al尺寸稳定性的影响[J].材料热处理学报,2006,27(1):23-27. 被引量：13
  • 2陈国钦,姜龙涛,武高辉,朱德志,修子扬.Fabrication and characterization of high dense Mo/Cu composites for electronic packaging applications[J].中国有色金属学会会刊：英文版,2007,17(A01):580-583. 被引量：3
  • 3Chong-Sung Park,Myung-Ho Kim,Chongmu Lee.A theoretical approach for the thermal expansion behavior of the particulate reinforced aluminum matrix composite Part I A thermal expansion model for composites with mono-dispersed spherical particles[J]. Journal of Materials Science . 2001 (14)
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中国有色金属学会会刊：英文版
2006年 第A03期

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