SLM成形10%SiC颗粒增强铝基复合材料的工艺优化及性能

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Abstract In order to investigate the effect of selective laser melting (SLM) forming technology on 10%SiC particle reinforced AlSi10Mg composite material, the microstructure, relative density and physical properties of forming parts were studied by using different combination range of for-ming process parameters (scanning speed and scanning spacing). The results show that, under the same scanning power, when the scanning spacing increases from 0.05 mm to 0.14 mm, the density of composite samples formed by SLM first increases and then decreases. When the scanning speed increases from 700 mm/s to 1 700 mm/s, the density of composite samples also increases first and then decreases. When the laser power is 300 W, the thickness of powder layer is 0.03 mm, the scanning speed is 1 100 mm/s, and the scanning spacing is 0.11 mm, the relative density of 10%SiC particles reinforced AlSi10Mg composite material could reach 98.34%, and the brinell hardness was 189HBW. At the same time, there are few holes and cracks in the sample, SiC particles are uniformly distributed in the aluminum matrix, and there have a good interface reaction between SiC particles and aluminum matrix.

Key words： selective laser melting (SLM) silicon carbide relative density Brinell hardness

Published: 08 January 2021

CLC number:

TG148

Fund:This work was financially supported by the National Natural Science Foundation of China (51971166).

About author:: Kang Song, master candidate of Xi'an University of Technology, is mainly engaged in SLM forming aluminum matrix composite technology research and application analysis, additive manufacturing and other industry analysis and planning research. Zengyun Jian, doctor of Northwest Polytechnic University, postdoctoral fellow of Japan Institute of Cosmography, second professor, doctoral supervisor, “Three to Five Talents” of Shaanxi Province, director of Key Laboratory of Photoelectric Functional Materials and Devices of Shaanxi Province, outstanding teacher of Shanxi Province, Outstanding Young Teacher of Ministry of Education,5 National Natural Science Foundation Projects and 2 National 973 Special Projects. He has won 3 provincial and ministerial science and technology awards and 4 invention patents. As the first author, he has published more than 60 papers on academic journals such as Acta Materialia.

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	SONG Kang
	JIAN Zengyun
	WANG Weizhong
	CHEN Yan

Cite this article:

SONG Kang,JIAN Zengyun,WANG Weizhong, et al. Properties and Process Optimization of 10%SiC_p/AlSi₁₀Mg Composites by SLM[J]. Materials Reports, 2020, 34(Z2): 376-380.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2020/V34/IZ2/376

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