颗粒尺寸对挤压铸造10SiC<sub>p</sub>/6061复合材料组织和性能的影响

姚杰; 王春涛; 朱刚; 赵海东

doi:10.15980/j.tzzz.2019.05.013

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颗粒尺寸对挤压铸造10SiC_p/6061复合材料组织和性能的影响
Effects of Particle Size on Microstructures and Properties of the 10SiC_p/6061 Composites by Squeezing Casting Process
2019年39卷第5期页码：511-515
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.05.013

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[1]姚杰,王春涛,朱刚,赵海东.颗粒尺寸对挤压铸造10SiC_p/6061复合材料组织和性能的影响[J].特种铸造及有色合金,2019,39(05):511-515.

Yao Jie, Wang Chuntao, Zhu Gang, et al. Effects of Particle Size on Microstructures and Properties of the 10SiC_p/6061 Composites by Squeezing Casting Process[J]. Special Casting & Nonferrous Alloys, 2019,39(5):511-515.
[1]姚杰,王春涛,朱刚,赵海东.颗粒尺寸对挤压铸造10SiC_p/6061复合材料组织和性能的影响[J].特种铸造及有色合金,2019,39(05):511-515. DOI： 10.15980/j.tzzz.2019.05.013.

Yao Jie, Wang Chuntao, Zhu Gang, et al. Effects of Particle Size on Microstructures and Properties of the 10SiC_p/6061 Composites by Squeezing Casting Process[J]. Special Casting & Nonferrous Alloys, 2019,39(5):511-515. DOI： 10.15980/j.tzzz.2019.05.013.

摘要

采用熔体搅拌技术制备了SiCp尺寸分别为20μm、20μm+50μm、50μm的10SiCp/6061复合材料

并在100MPa压力下挤压铸造成形

研究了颗粒尺寸对挤压铸造复合材料微观组织和力学性能的影响。结果表明

随着颗粒尺寸增加

10SiCp/6061复合材料的孔隙率不断降低

颗粒分布更加均匀

力学性能均逐渐降低

复合材料断裂模式由韧性断裂向韧脆混合断裂模式转变。

Abstract

6061-based metal matrix composites reinforced by 10% SiC particles with size of 20μm

20μm+50μm and 50μm were fabricated

respectively

by stirring casting and direct squeeze casting process under 100 MPa.The effects of particle size on microstructures and mechanical properties of the composites were investigated.The results reveal that with the increases of particle size

the porosity in the composites prepared is decreased gradually with more uniform distribution

and tensile strength

yield strength

elongation and hardness of the 10SiCp/6061 composites are decreased

meanwhile

the fracture mechanism of the composites prepared is transformed from ductile fracture to ductile-brittle mixed fracture.

关键词

金属基复合材料颗粒尺寸挤压铸造微观组织力学性能

Keywords

Metal Matrix CompositesParticle SizeSqueeze CastingMicrostructuresMechanical Properties

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颗粒尺寸对挤压铸造10SiCp/6061复合材料组织和性能的影响

Effects of Particle Size on Microstructures and Properties of the 10SiCp/6061 Composites by Squeezing Casting Process

DOI： 10.15980/j.tzzz.2019.05.013

摘要

Abstract

关键词

Keywords

references

颗粒尺寸对挤压铸造10SiC_p/6061复合材料组织和性能的影响

Effects of Particle Size on Microstructures and Properties of the 10SiC_p/6061 Composites by Squeezing Casting Process