Microstructure and Properties of SiC<sub>p</sub>/6061 Aluminum Matrix Composites Prepared by Semi-solid Stirring Casting

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Microstructure and Properties of SiC_p/6061 Aluminum Matrix Composites Prepared by Semi-solid Stirring Casting
Vol. 35, Issue 6, Pages: 614-618(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.06.015

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[1]王辉,王顺成,郑开宏,王建华,陈学文.半固态搅拌铸造SiC_p/6061铝基复合材料的组织与性能[J].特种铸造及有色合金,2015,35(06):614-618.

Wang Hui, Wang Shuncheng, Zheng Kaihong, et al. Microstructure and Properties of SiC_p/6061 Aluminum Matrix Composites Prepared by Semi-solid Stirring Casting. [J]. Special Casting & Nonferrous Alloys 35(6):614-618(2015)
[1]王辉,王顺成,郑开宏,王建华,陈学文.半固态搅拌铸造SiC_p/6061铝基复合材料的组织与性能[J].特种铸造及有色合金,2015,35(06):614-618. DOI： 10.15980/j.tzzz.2015.06.015.

Wang Hui, Wang Shuncheng, Zheng Kaihong, et al. Microstructure and Properties of SiC_p/6061 Aluminum Matrix Composites Prepared by Semi-solid Stirring Casting. [J]. Special Casting & Nonferrous Alloys 35(6):614-618(2015) DOI： 10.15980/j.tzzz.2015.06.015.

摘要

采用半固态搅拌铸造方法制备了SiCp粒径为20

5

0μm的SiCp/6061铝基复合材料

研究了SiCp粒径对铝基复合材料显微组织、力学性能及耐磨性能的影响。结果表明

随着SiCp粒径增大

SiCp在铝基复合材料内的分散均匀性提高

但铝基复合材料的抗拉强度和伸长率下降。铝基复合材料的断裂机制为SiCp与基体合金之间界面脱粘和SiCp断裂共同作用。复合材料的耐磨性随着SiCp粒径的增大而逐渐提高

其磨损机理为粘着磨损和磨粒磨损共同作用

且随着SiCp粒径的增大

磨粒磨损作用起主导作用。

Abstract

The SiCp/6061 aluminum matrix composites with SiC particles in range of 20 to 50μm were prepared by semi-solid stirring casting.Effects of SiC particle size on the microstructure and properties of SiCp/6061 aluminum matrix composites were investigated.The results indicate that the dispersion uniformity of SiC particles in aluminum matrix composite is improved with increasing in SiC particle size

however

the tensile properties and elongation are decreased.Fracture mechanism of the composites is characterized by co-action of interfacial de-bonding and particle cracking.The particle crack plays a dominant role in crack mechanism with SiC particle size increase.With the increase of SiC particle size

wear resistance of SiCp/6061 aluminum matrix composites is increased.The friction and wear mechanism can be described by adhesive wear and abrasive particles wear

and the abrasive wear will play the dominant role with increasing in SiC particle size.

关键词

半固态搅拌铸造SiCp铝基复合材料耐磨性能

Keywords

Semi-solid Stirring CastingSiC ParticleAluminum Matrix CompositesWear Properties

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相关作者

Xie Jingpei 河南科技大学材料科学与工程学院

Wang Hang 河南科技大学材料科学与工程学院

Wang Aiqin 河南科技大学材料科学与工程学院

Hao Shiming 郑州大学物理工程学院

Zhu Hexiang Li Zoujian Zeng Guoxun Xiong Huang Yang Weijun 广东工业大学

黎祚坚广东工业大学

曾国勋广东工业大学

熊凰广东工业大学

相关机构

School of Materials Science and Engineering,Henan University of Science and Technology

Physical Engineering College of Zhengzhou University

Guangdong University of Technology

Harbin Institute of Technology

Southeast University

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