A fracture mechanics model for gradient-structured materials

doi:10.1016/j.engfracmech.2024.110688

IMR OpenIR

	A fracture mechanics model for gradient-structured materials
	Li, X. T.1; Zhao, J. F.2; Zhang, Z. J.1,3; Zhang, P.1,3; Zhang, Z. F.1,3
通讯作者	Li, X. T.(xiaotaoli@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2025-01-23
发表期刊	ENGINEERING FRACTURE MECHANICS
ISSN	0013-7944
卷号	313 页码:10
摘要	Designing gradient structures effectively regulates material properties, achieving an optimal balance between strength and toughness, and enhancing material safety in service. However, there is no a good model for gradient-structured materials (GSM) complicates establishing the relationship between gradient parameters and toughness. This study takes gradient nano-grained materials as an example and for the first time a fracture mechanics model is established. The results obtained by the fracture mechanics model aligns well with the experimental observations and finite element simulations, confirming its effectiveness. It is revealed that the fracture resistance is higher when the crack propagates from coarse-grained to nano-grained (CG-to-NG) structures, while becomes lower for the NG-to-CG structures. Meanwhile, it is interesting to find that a smaller grain size gradient exhibits a higher toughness. The fracture mechanics model provides a qualitative analysis of the gradient structure's effect on toughness, offering theoretical guidance for the toughening design of GSM.
关键词	Gradient structure Fracture mechanics Toughness Grain size Crack growth
资助者	National Natural Science Foundation of China ; KC Wong Education Foundation ; International Joint Research Project of CAS ; IMR Outstanding Scholar Position ; IMR Innovation Fund
DOI	10.1016/j.engfracmech.2024.110688
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52401122] ; National Natural Science Foundation of China[52130002] ; National Natural Science Foundation of China[52321001] ; National Natural Science Foundation of China[52322105] ; National Natural Science Foundation of China[52261135634] ; KC Wong Education Foundation[GJTD-2020-09] ; International Joint Research Project of CAS[172GJHZ2022030MI] ; IMR Outstanding Scholar Position[E451A804] ; IMR Innovation Fund[2023-ZD01]
WOS研究方向	Mechanics
WOS类目	Mechanics
WOS记录号	WOS:001370566800001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181289
专题	中国科学院金属研究所
通讯作者	Li, X. T.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, X. T.,Zhao, J. F.,Zhang, Z. J.,et al. A fracture mechanics model for gradient-structured materials[J]. ENGINEERING FRACTURE MECHANICS,2025,313:10.
APA	Li, X. T.,Zhao, J. F.,Zhang, Z. J.,Zhang, P.,&Zhang, Z. F..(2025).A fracture mechanics model for gradient-structured materials.ENGINEERING FRACTURE MECHANICS,313,10.
MLA	Li, X. T.,et al."A fracture mechanics model for gradient-structured materials".ENGINEERING FRACTURE MECHANICS 313(2025):10.