Enhanced Mechanical Properties in Bulk Nanograined Ni with High-Density Fivefold Twins

doi:10.1002/smll.202410202

IMR OpenIR

	Enhanced Mechanical Properties in Bulk Nanograined Ni with High-Density Fivefold Twins
	Wang, Yujue 1,2; Zhou, Xin 3; Lu, Yang 4; Li, Xiuyan 1,5
通讯作者	Lu, Yang(ylu1@hku.hk) ; Li, Xiuyan(xyli@imr.ac.cn)
	2025-01-23
发表期刊	SMALL
ISSN	1613-6810
页码	9
摘要	Fivefold twins are extensively present in nanoparticles and nanowires, enhancing their performance in physical, chemical, and mechanical properties. However, a deep insight into the correlation between mechanical properties and fivefold twins in bulk nanograined materials is lacking due to synthesis difficulties. Here, a bulk fivefold-twinned nanograined Ni is synthesized via electrodeposition. The fivefold-twinned nanograins typically feature decahedral and icosahedral shapes similar to fivefold-twinned particles. The material exhibits a yield strength of approximate to 1.7 GPa under both compression and tension. Tensile samples achieve an ultimate strength of 2.15 GPa with 15% elongation to failure. The plastic deformation is accommodated by partial dislocation sliding on twin boundaries, splitting fivefold twins, and abnormally refining grains. The size dependence of nucleation stress for partial dislocation is responsible for strengthening and strain hardening. The results showcase the potential of incorporating fivefold twins into bulk nanocrystalline materials to tailor mechanical properties and applications across diverse fields.
关键词	fivefold twins nanograined Ni partial dislocation strain hardening
资助者	National Natural Science Foundation of China ; Chinese Academy of Sciences ; Hong Kong RGC General Research Fund ; Hong Kong Collaborative Research Fund ; Alexander von Humboldt-Stiftung Foundation
DOI	10.1002/smll.202410202
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Chinese Academy of Sciences[XDB0510000] ; Hong Kong RGC General Research Fund[11200623] ; Hong Kong Collaborative Research Fund[C7074-23G] ; Alexander von Humboldt-Stiftung Foundation ; [52225102]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001402546400001
出版者	WILEY-V C H VERLAG GMBH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180463
专题	中国科学院金属研究所
通讯作者	Lu, Yang; Li, Xiuyan
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Munster, Inst Mat Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany 3.Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany 4.Univ Hong Kong, Dept Mech Engn, Pokfulam, Hong Kong 999077, Peoples R China 5.Liaoning Acad Mat, 280 Chuangxin Rd, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yujue,Zhou, Xin,Lu, Yang,et al. Enhanced Mechanical Properties in Bulk Nanograined Ni with High-Density Fivefold Twins[J]. SMALL,2025:9.
APA	Wang, Yujue,Zhou, Xin,Lu, Yang,&Li, Xiuyan.(2025).Enhanced Mechanical Properties in Bulk Nanograined Ni with High-Density Fivefold Twins.SMALL,9.
MLA	Wang, Yujue,et al."Enhanced Mechanical Properties in Bulk Nanograined Ni with High-Density Fivefold Twins".SMALL (2025):9.