Strengthening Mechanisms and Mechanical Characteristics of Heterogeneous CNT/Al Composites by Finite Element Simulation

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	Strengthening Mechanisms and Mechanical Characteristics of Heterogeneous CNT/Al Composites by Finite Element Simulation
	Feng Hui 1; Yang Shu 1; Yang Shengyuan 1; Zhou Li 1; Zhang Junfan 2; Ma Zongyi 2
	2024
发表期刊	ACTA METALLURGICA SINICA(ENGLISH LETTERS)
ISSN	1006-7191
卷号	37 期号:12 页码:2106-2120
摘要	The refined explicit finite element scheme considering various strengthening mechanisms and damage modes is proposed for simulation of deformation processes and mechanical properties of carbon nanotube (CNT)-reinforced bimodal-grained aluminum matrix nanocomposites. Firstly, the detailed microstructure model is established by constructing the geometry models of CNTs and grain boundaries, which automatically incorporates grain refinement strengthening and load transfer effect. Secondly, a finite element formulation based on the conventional theory of mechanical-based strain gradient plasticity is developed. Furthermore, the deformation and fracture modes for the nanocomposites with various contents and distributions of coarse grains (CGs) are explored based on the scheme. The results indicate that ductility of the composites first increases and then decreases as the content of CGs rises. Moreover, the dispersed distribution exhibits better ductility than concentrated one. Additionally, grain boundaries proved to be the weakest component within the micromodel. A series of interesting phenomena have been observed and discussed upon the refined simulation scheme. This work contributes to the design and further development of CNT/Al nanocomposites, and the proposed scheme can be extended to various bimodal metal composites.
关键词	Mechanical properties Carbon nanotube (CNT) Bimodal metal matrix nanocomposites Refined explicit finite element simulation Microstructure design
语种	英语
WOS记录号	WOS:001313688000005
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179691
专题	中国科学院金属研究所
作者单位	1.School of Electromechanical and Automotive Engineering,Yantai University 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Feng Hui,Yang Shu,Yang Shengyuan,et al. Strengthening Mechanisms and Mechanical Characteristics of Heterogeneous CNT/Al Composites by Finite Element Simulation[J]. ACTA METALLURGICA SINICA(ENGLISH LETTERS),2024,37(12):2106-2120.
APA	Feng Hui,Yang Shu,Yang Shengyuan,Zhou Li,Zhang Junfan,&Ma Zongyi.(2024).Strengthening Mechanisms and Mechanical Characteristics of Heterogeneous CNT/Al Composites by Finite Element Simulation.ACTA METALLURGICA SINICA(ENGLISH LETTERS),37(12),2106-2120.
MLA	Feng Hui,et al."Strengthening Mechanisms and Mechanical Characteristics of Heterogeneous CNT/Al Composites by Finite Element Simulation".ACTA METALLURGICA SINICA(ENGLISH LETTERS) 37.12(2024):2106-2120.