Mechanism of crack evolution and strength failure in chemo-mechanical induced fracture

doi:10.1016/j.jmps.2023.105525

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Mechanism of crack evolution and strength failure in chemo-mechanical induced fracture
	Yin JJ(尹佳静); Yuan QZ(袁泉子)
刊名	JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
	2024-02-01
卷号	183 页码:14
关键词	chemo-mechanical coupling fracture corrosion crack tip energy evolution
ISSN号	0022-5096
DOI	10.1016/j.jmps.2023.105525
通讯作者	Yuan, Quanzi(yuanquanzi@lnm.imech.ac.cn)
英文摘要	Chemo-mechanical coupled fracture is ubiquitous among various application fields. Under-standing the mechanism of crack propagation is critical to the prediction and control of fracture behavior. In this paper, mechanical damage and chemical erosion have been investigated by a combination of experiments and theoretical analysis. We developed a theoretical model to analyze the interface evolution and the mechanical state of the crack tip in chemically active environments based on the transition-state theory. This model enables us to predict mechanical failure and chemical corrosion of materials exposed to external acid attack. Theoretical pre-dictions of the corrosion rate and fracture strength have been validated by fracture experiments performed in corrosive solutions of different concentrations. In particular, we discovered a non -monotonic and non-linear relationship between the degree of corrosion and fracture strength, which demonstrates that corrosion-induced crack tip blunting and mass loss of materials together affect the cracking critical state. We further conducted the thermodynamic analysis of a quasi -static cracked body to investigate the effect of corrosion on energy stored in the crack tip. Our theory-experiment-combined study reveals the mechanism of coupling chemical and mechanical damage, which provides significant insight into corrosion-induced fracture behavior in aggressive environments.
分类号	一类/力学重要期刊
资助项目	National Natural Science Foundation of China[12072346] ; National Natural Science Foundation of China[12032019] ; National Key Research and Development Program of China[2022YFA1203200]
WOS关键词	CORROSION-FATIGUE BEHAVIOR ; FILM RUPTURE MODEL ; TEMPERATURE ; TRANSITION ; AZ61
WOS研究方向	Materials Science ; Mechanics ; Physics
语种	英语
WOS记录号	WOS:001146996800001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China
其他责任者	Yuan, Quanzi
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94219]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Yin JJ,Yuan QZ. Mechanism of crack evolution and strength failure in chemo-mechanical induced fracture[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2024,183:14.
APA	尹佳静,&袁泉子.(2024).Mechanism of crack evolution and strength failure in chemo-mechanical induced fracture.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,183,14.
MLA	尹佳静,et al."Mechanism of crack evolution and strength failure in chemo-mechanical induced fracture".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 183(2024):14.