Effect of graphite powder as a forming filler on the mechanical properties of SiCp/Al composites by pressure infiltration

被引：0

作者：

Wei Cui ^{[1
]}

Hui Xu ^{[1
]}

Jian-hao Chen ^{[1
]}

Shu-bin Ren ^{[1
]}

Xin-bo He ^{[1
]}

Xuan-hui Qu ^{[1
,2
]}

机构：

[1] Institute for Advanced Materials and Technology, University of Science and Technology Beijing

[2] The State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing

来源：

InternationalJournalofMineralsMetallurgyandMaterials | 2016年 / 23卷 / 05期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

metal matrix composites; aluminum; silicon carbide; graphite; preparation; pressure infiltration; mechanical properties;

D O I：

暂无

中图分类号：

TB333 [金属－非金属复合材料];

学科分类号：

0805 ; 080502 ;

摘要：

(38vol% Si Cp + 2vol% Al;O;f)/2024 Al composites were fabricated by pressure infiltration. Graphite powder was introduced as a forming filler in preform preparation, and the effects of the powder size on the microstructures and mechanical properties of the final composites were investigated. The results showed that the composite with 15 μm graphite powder as a forming filler had the maximum tensile strength of 506 MPa, maximum yield strength of 489 MPa, and maximum elongation of 1.2%, which decreased to 490 MPa, 430 MPa, and 0.4%, respectively, on increasing the graphite powder size from 15 to 60 μm. The composite with 60 μm graphite powder showed the highest elastic modulus, and the value decreased from 129 to 113 GPa on decreasing the graphite powder size from 60 to 15 μm. The differences between these properties are related to the different microstructures of the corresponding composites, which determine their failure modes.

引用

页码：601 / 607

页数：7

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