期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 881, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.160504
关键词
Metal matrix composites; Interface; Microstructure; Nanoparticles
资金
- National Natural Science Foundation of China [51871087]
- Natural Science Foundation Key Project of Hebei Province [E2014202008, E2016202406]
This study improved the distribution of AlN and TiC nanoparticles in the matrix by preparing AlN-TiC/Al composite ribbons and adding them to an Al-Zn-Mn-Cu alloy, leading to a significant enhancement in the mechanical properties of the composite.
Compared with the particle reinforced aluminum matrix composites (PRAMCs) with single-phase reinforcing particles, hybrid aluminum matrix composites (HAMCs) have attracted many researchers in the world due to the well performance in industrial production and application, which achieved gratifying results. In this work, in-situ AlN and TiC nanoparticles were produced by high-energy ball milling. To improve the wettability with the aluminum matrix, AlN-TiC/Al composite ribbons were prepared by melt spun. Then, the ribbons were added to the Al-Zn-Mn-Cu alloy to prepare AlN-TiC/Al-Zn-Mn-Cu composite. Meanwhile, the ultrasonic vibration was used to ameliorate the distribution of AlN and TiC nanoparticles in the matrix. The results shown that AlN and TiC nanoparticles had a significant effect on the refinement and reinforcement of the composite. The ultimate tensile strength of the composite had a 10.6% increase, while the increase on the elongation is 20.0%. The excellent mechanical properties were mainly due to the dual-phase enhancement of in-situ AlN and TiC with two sizes of nanoparticles as well as the well-bonded interface between them and the matrix. Moreover, the improvement on the mechanical properties of the composite can benefit from the multiple strengthening mechanisms, including fine grain strengthening, coefficient of thermal expansion (CTE) mismatch strengthening and Orowan strengthening. The microstructure, orientation relationship, mechanical properties and strengthening mechanisms of the AlN-TiC/ Al-Zn-Mn-Cu composite were investigated. (c) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据