Fabrication of Al/Al2Cu in situ nanocomposite via friction stir processing

被引：37
作者：
Azizieh, M. [1 ]
Iranparast, D. [1 ]
Dezfuli, M. A. G. [1 ]
Balak, Z. [1 ]
Kim, H. S. [2 ]
机构：
[1] Islamic Azad Univ, Ahvaz Branch, Coll Engn, Dept Mat Sci & Engn, Ahvaz 6134937333, Iran
[2] Pohang Univ Sci & Technol POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2017年 / 27卷 / 04期
关键词：
friction stir processing; composite materials; hardness; microstructure; surface properties; ALUMINUM-ALLOY; REINFORCED ALUMINUM; MECHANICAL-PROPERTIES; HYBRID COMPOSITES; GRAIN-SIZE; MICROSTRUCTURE; PARTICLES; PROPERTY; EVOLUTION; PARAMETER;
D O I：
10.1016/S1003-6326(17)60089-X
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The aim of present work is fabrication of Al/Al2Cu in situ nanocomposite by friction stir processing (FSP) as well as investigation of FPS parameters such as rotational speed, travel speed, number of FSP passes, and pin profile on the microstructure, chemical reaction, and microhardness of Al based nanocomposite. The Al2Cu particles were formed rapidly due to mechanically activated effect of FSP as well as high heat generation due to Al-Cu exothermic reaction. The microstructure of the nanocomposites consisted of a finer grained aluminium matrix (similar to 15 mu m), unreacted Cu nanoparticles (similar to 40 nm), and reinforcement nanoparticles of Al2Cu. Irregular morphology of Al2Cu is attributed to the local melting during FSP. Pin diameter has a higher effect on the microstructure and hardness values. The hardness measurements exhibited enhancement by 57% compared with the base metal.
引用
收藏
页码：779 / 788
页数：10
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