Cold spraying SiC/Al metal matrix composites: effects of SiC contents and heat treatment on microstructure, thermophysical and flexural properties

doi:10.1088/2053-1591/aaaeee

IMR OpenIR

	Cold spraying SiC/Al metal matrix composites: effects of SiC contents and heat treatment on microstructure, thermophysical and flexural properties
	Gyansah,L 1,2; Tariq,N H 1,2; Tang,J R 1,3; Qiu,X 1,3; Feng,B 1,2; Huang,J 1,3; Du,H 1; Wang,J Q 1; Xiong,T Y
	2018-02-23
发表期刊	Materials Research Express
ISSN	2053-1591
卷号	5 期号:2
摘要	Abstract In this paper, cold spray was used as an additive manufacturing method to fabricate 5 mm thick SiC/Al metal matrix composites with various SiC contents. The effects of SiC contents and heat treatment on the microstructure, thermophysical and flexural properties were investigated. Additionally, the composites were characterized for retention of SiC particulates, splat size, surface roughness and the progressive understanding of strengthening, toughening and cracking mechanisms. Mechanical properties were investigated via three-point bending test, thermophysical analysis, and hardness test. In the as-sprayed state, flexural strength increased from 95.3 MPa to 133.5 MPa, an appreciation of 40% as the SiC contents increased, and the main toughening and strengthening mechanisms were zigzag crack propagation and high retention of SiC particulates respectively. In the heat treatment conditions, flexural strength appreciated significantly compared to the as-sprayed condition and this was as a result of coarsening of pure Al splat. Crack branching, crack deflection and interface delamination were considered as the main toughening mechanisms at the heat treatment conditions. Experimental results were consistent with the measured CTE, hardness, porosity and flexural modulus.
关键词	cold spray flexural properties thermophyical properties SiC content crack propagation heat treatment
DOI	10.1088/2053-1591/aaaeee
语种	英语
WOS记录号	IOP:2053-1591-5-2-aaaeee
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80563
作者单位	1.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China 2.University of Chinese Academy of Sciences, Beijing, People’s Republic of China 100049 3.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, People’s Republic of China
推荐引用方式 GB/T 7714	Gyansah,L,Tariq,N H,Tang,J R,et al. Cold spraying SiC/Al metal matrix composites: effects of SiC contents and heat treatment on microstructure, thermophysical and flexural properties[J]. Materials Research Express,2018,5(2).
APA	Gyansah,L.,Tariq,N H.,Tang,J R.,Qiu,X.,Feng,B.,...&Xiong,T Y.(2018).Cold spraying SiC/Al metal matrix composites: effects of SiC contents and heat treatment on microstructure, thermophysical and flexural properties.Materials Research Express,5(2).
MLA	Gyansah,L,et al."Cold spraying SiC/Al metal matrix composites: effects of SiC contents and heat treatment on microstructure, thermophysical and flexural properties".Materials Research Express 5.2(2018).