Exceptional ductility through interface-constrained grain growth for the ultrafine-scale Ni/Ni-W layered composites

doi:10.1016/j.ijplas.2024.103959

IMR OpenIR

	Exceptional ductility through interface-constrained grain growth for the ultrafine-scale Ni/Ni-W layered composites
	Liang, Fei 1; Wang, Zhe-Xuan 2; Li, Mei-Yue 1; Zhang, Bin 2; Luo, Xue-Mei 1; Zhu, Xiao-Fei 1; Zhang, Guang-Ping 1
通讯作者	Zhang, Bin(zhangb@atm.neu.edu.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
	2024-05-01
发表期刊	INTERNATIONAL JOURNAL OF PLASTICITY
ISSN	0749-6419
卷号	176 页码:15
摘要	Enhancing the strength of metallic laminates through decreasing the constituent layer thickness from micrometer to nanometer scale is usually accompanied by the degradation of ductility because plastic instability characterized by fatal shear bands inevitably occurs in the early stage of deformation. To overcome the strength-ductility trade-off dilemma, we designed a kind of metallic layered composites (LCs) consisting of nano-grained Ni (grain size: 21-37 nm) and ultrafine nano-grained Ni-W (grain size: 8 nm) constituent layers with layer thickness ranging from microns to tens of nanometers. We found that the strength and ductility of Ni/Ni-W LCs can be simultaneously enhanced by decreasing the layer thickness. Interface-constrained grain growth in the Ni layers with an initial layer thickness of less than 1 mu m enhances strain hardening ability. Thus, strain delocalization characterized by the formation of rectangular strain zones instead of crossed micro shear bands appears in the LCs. Based on the above mechanism, we obtained the optimum ratio of the layer thickness to the grain size for the nano-grained Ni layers as about 15:1, which corresponds to Ni0.25/Ni-W0.025 LCs with the highest tensile strength (1.9 GPa) and elongation to failure (5.5 %). These findings may provide a new path for the design principle of metallic LCs with multi-level microstructural and geometrical scales.
关键词	Layered composites Shear band Microstructural dimension Ductility Interface
资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; Fundamental Research Project of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.ijplas.2024.103959
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB0510303] ; National Natural Science Foundation of China (NSFC)[51971060] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18]
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:001217778300001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：10[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/321006/186086
专题	中国科学院金属研究所
通讯作者	Zhang, Bin; Zhang, Guang-Ping
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.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Liang, Fei,Wang, Zhe-Xuan,Li, Mei-Yue,et al. Exceptional ductility through interface-constrained grain growth for the ultrafine-scale Ni/Ni-W layered composites[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2024,176:15.
APA	Liang, Fei.,Wang, Zhe-Xuan.,Li, Mei-Yue.,Zhang, Bin.,Luo, Xue-Mei.,...&Zhang, Guang-Ping.(2024).Exceptional ductility through interface-constrained grain growth for the ultrafine-scale Ni/Ni-W layered composites.INTERNATIONAL JOURNAL OF PLASTICITY,176,15.
MLA	Liang, Fei,et al."Exceptional ductility through interface-constrained grain growth for the ultrafine-scale Ni/Ni-W layered composites".INTERNATIONAL JOURNAL OF PLASTICITY 176(2024):15.