Prediction of the overall mechanical response of gradient nano-grained materials based on grain size distribution profile

doi:10.1016/j.ijsolstr.2022.111686

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	Prediction of the overall mechanical response of gradient nano-grained materials based on grain size distribution profile
	Yu, Li
刊名	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2022-07-01
卷号	248 页码:9
关键词	Constitutive modeling Grain size distribution Strength Ductility Gradient structured metals
ISSN号	0020-7683
DOI	10.1016/j.ijsolstr.2022.111686
通讯作者	Yu, Li(yuli@imech.ac.cn)
英文摘要	Inspired by the gradient structure of biological materials, various gradient nano-grained (GNG) materials, inside which grain size spans several orders of magnitude, have been manufactured in recent years. This kind of material often exhibits extra hardening ability and ultimately achieves synergetic strength and ductility. The extra hardening of GNG materials is closely related to the strain gradient formed during deformation. However, the analytical relation between the structural gradient, strain gradient is still unexplored. Besides, the previous works focused on only one type of GNG material, and the understanding of the effect of different kinds of microstructures is limited. This paper explores the analytical relations between the strain gradient and the average grain size, as well as the grain size gradient in GNG materials. The overall mechanical responses of GNG interstitial-free (IF) steel and GNG Ni are well predicted. The results verify that the extra hardening of GNG materials is dependent on their unique microstructures. The strength and ductility of GNG materials can be improved by adjusting the composition and distribution of coarse grains and nano-grains.
资助项目	National Natural Science Foundation of China[11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
WOS关键词	FATIGUE RESISTANCE ; STRAIN ; PLASTICITY ; DUCTILITY ; DEFORMATION ; STRENGTH
WOS研究方向	Mechanics
语种	英语
WOS记录号	WOS:000803791100005
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89528]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Yu, Li
作者单位	Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yu, Li. Prediction of the overall mechanical response of gradient nano-grained materials based on grain size distribution profile[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2022,248:9.
APA	Yu, Li.(2022).Prediction of the overall mechanical response of gradient nano-grained materials based on grain size distribution profile.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,248,9.
MLA	Yu, Li."Prediction of the overall mechanical response of gradient nano-grained materials based on grain size distribution profile".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 248(2022):9.