Effect of Micro- and Nano-SiC Particulate Reinforcements in Magnesium-Based Metal Matrix Composites

被引：14
作者：
Shen, Ming-Jie [1 ]
Ying, Tao [2 ]
Chen, Fu-Yu [1 ]
Hou, Jun-Ming [1 ]
机构：
[1] Shenyang Agr Univ, Coll Engn, Shenyang 110866, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2016年 / 25卷 / 06期
基金：
中国博士后科学基金;
关键词：
magnesium-based metal matrix composites; microstructure; tensile properties; MECHANICAL-PROPERTIES; GRAIN-SIZE; STRENGTH; MICROSTRUCTURE; FRACTURE;
D O I：
10.1007/s11665-016-2068-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of the volume ratios of micro and nano-SiC particles (SiCp) on the grain refinement, distribution of SiCp particle, and tensile properties of the as-cast AZ31B (Mg-3Al-1Zn-0.3Mn) magnesium-based metal matrix composites have been investigated. As the volume fraction of micron SiCp decreases to 9 vol.% and the nano-SiCp increases to 1 vol.%, excellent grain refinement effect is achieved. This is due to both the uniform distribution and refining effects of micro- and nano-SiCp. Moreover, the micron SiCp distribute along the grain boundaries, while nano-SiCp is mainly distributed around the micron SiCp. The room-temperature tensile results show that the optimal room-temperature yield and tensile strengths are achieved with a 9/1 ratio of micro to nano-SiCp, while the 9.5/0.5 ratio yielded the highest elongation.
引用
收藏
页码：2222 / 2229
页数：8
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