Fabrication of nano-sized grains by pulsed laser surface melting

doi:10.1088/0022-3727/43/9/095402

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	Fabrication of nano-sized grains by pulsed laser surface melting
	Wang CT; Zhou H; Lin PY; Sun N; Guo QC; Yu JX; Wang MX; Zhao Y; Ren LQ
发表期刊	Journal of Physics D-Applied Physics
	2010
卷号	43 期号:9 页码:95402
ISSN	0022-3727
摘要	In this work, the formation and characterization of nano-sized grains on the modified surfaces of GCr15 and H13 steels have been investigated. The material was processed by pulsed laser surface melting (LSM) under different depths of de-ionized water. The microstructures and phases of the melted zones were examined by x-ray diffraction, environmental field emission scanning electron microscopy and high resolution transmission electron microscopy. The results indicate that LSM under water can successfully fabricate nano-scaled grains on the surfaces of steel, due to the rapid solidification and crystallization by heterogeneous nucleation. The elemental segregation of chromium and activated heterogeneous nucleation mechanism of austenite in liquid metal play a key role in the formation of nano-sized grains at high cooling rates. This one-step technique provides us a new way to prepare uniform nano-scaled grains, and is of great importance for further understanding the growth of nano-materials under extreme conditions.
DOI	10.1088/0022-3727/43/9/095402
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000274664600013
关键词[WOS]	SOLID-LIQUID INTERFACE ; ND-YAG LASER ; RAPID SOLIDIFICATION ; TOOL STEEL ; CAST-IRON ; CORROSION BEHAVIOR ; NANOCRYSTALLINE CU ; STRUCTURAL MODEL ; WEAR-RESISTANCE ; MICROSTRUCTURE
WOS研究方向	Physics
WOS类目	Physics, Applied
项目资助者	Jilin University ; National Natural Science Fund of China [50635030] ; Science and Development Foundation of Jilin [20060196]
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43533
专题	非线性力学国家重点实验室
通讯作者	Wang CT
推荐引用方式 GB/T 7714	Wang CT,Zhou H,Lin PY,et al. Fabrication of nano-sized grains by pulsed laser surface melting[J]. Journal of Physics D-Applied Physics,2010,43,9,:95402.
APA	Wang CT.,Zhou H.,Lin PY.,Sun N.,Guo QC.,...&Ren LQ.(2010).Fabrication of nano-sized grains by pulsed laser surface melting.Journal of Physics D-Applied Physics,43(9),95402.
MLA	Wang CT,et al."Fabrication of nano-sized grains by pulsed laser surface melting".Journal of Physics D-Applied Physics 43.9(2010):95402.

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