Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites

doi:10.1007/s40195-021-01254-w

IMR OpenIR

	Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites
	Ma, Guonan 1,2; Wang, Dong 1; Xiao, Bolv 1; Ma, Zongyi 1
通讯作者	Wang, Dong(dongwang@imr.ac.cn)
	2021-06-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	13
摘要	15 vol.% SiC/Al-6.5Zn-2.8 Mg-1.7Cu (wt%) composites with varying particle sizes (3.5, 7.0, 14 and 20 mu m), i.e., C-3.5, C-7.0, C-14, and C-20, respectively, were fabricated by powder metallurgy (PM) method and subjected to microstructural examination. The effect of particle size on mechanical properties and fracture behaviors of the T6-treated composites was revealed and analyzed in detail. Element distribution and precipitates variations in the composites with varying particle sizes were emphatically considered. Results indicated that both tensile strength and plasticity of the T6-treated composites increased first and then decreased with particle size decreasing. The C-7.0 composite simultaneously exhibited the highest ultimate tensile strength (UTS) of 686 MPa and best elongation (El.) of 3.1%. The smaller-sized SiC particle would introduce more oxide impurities, which would react with the alloying element in the matrix to cause Mg segregation and depletion. According to strengthening mechanism analysis, the weakening of precipitation strengthening in the T6-treated C-3.5 composite was the main cause of the lower tensile strength. Additionally, the larger SiC particle, the more likely to fracture, especially in the composites with high yield strength. For the T6-treated C-20 composites, more than 75% SiC particles were broken up, resulting in the lowest plasticity. As decreasing particle size, the fracture behaviors of the T6-treated composites would change from particle fracture to matrix alloy fracture gradually.
关键词	Metal matrix composites Mechanical properties Particle size Fracture behaviors Strengthening mechanisms
资助者	National Key R & D Program of China ; National Natural Science Foundation of China
DOI	10.1007/s40195-021-01254-w
收录类别	SCI
语种	英语
资助项目	National Key R & D Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51771193] ; National Natural Science Foundation of China[51931009]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000656829500001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160304
专题	中国科学院金属研究所
通讯作者	Wang, Dong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Guonan,Wang, Dong,Xiao, Bolv,et al. Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:13.
APA	Ma, Guonan,Wang, Dong,Xiao, Bolv,&Ma, Zongyi.(2021).Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA	Ma, Guonan,et al."Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):13.