Strain-Induced Ultrahard and Ultrastable Nanolaminated Structure in Nickel

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	Strain-Induced Ultrahard and Ultrastable Nanolaminated Structure in Nickel
	X. C. Liu; H. W. Zhang; K. Lu
	2013
发表期刊	Science
ISSN	0036-8075
卷号	342 期号:6156 页码:337-340
摘要	Heavy plastic deformation may refine grains of metals and make them very strong. But the strain-induced refinement saturates at large strains, forming three-dimensional ultrafine-grained (3D UFG) structures with random orientations. Further refinement of this microstructure is limited because of the enhanced mobility of grain boundaries. Very-high-rate shear deformation with high strain gradients was applied in the top surface layer of bulk nickel, where a 2D nanometer-scale laminated structure was induced. The strongly textured nanolaminated structure (average lamellar thickness of 20 nanometers) with low-angle boundaries among the lamellae is ultrahard and ultrastable: It exhibits a hardness of 6.4 gigapascal-which is higher than any reported hardness of the UFG nickel-and a coarsening temperature of 40 kelvin above that in UFG nickel.
部门归属	[liu, x. c. ; zhang, h. w. ; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [lu, k.] nanjing univ sci & technol, herbert gleiter inst nanosci, nanjing 210094, jiangsu, peoples r china. ; lu, k (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; lu@imr.ac.cn
关键词	Dynamic Plastic-deformation Microstructural Parameters Copper Evolution Recrystallization Temperature Refinement Crystals Stresses Texture
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71380
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. C. Liu,H. W. Zhang,K. Lu. Strain-Induced Ultrahard and Ultrastable Nanolaminated Structure in Nickel[J]. Science,2013,342(6156):337-340.
APA	X. C. Liu,H. W. Zhang,&K. Lu.(2013).Strain-Induced Ultrahard and Ultrastable Nanolaminated Structure in Nickel.Science,342(6156),337-340.
MLA	X. C. Liu,et al."Strain-Induced Ultrahard and Ultrastable Nanolaminated Structure in Nickel".Science 342.6156(2013):337-340.