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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
Source PublicationJournal of Physics D-Applied Physics
2010
Volume43Issue:9Pages:95402
ISSN0022-3727
AbstractIn 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.
DOI10.1088/0022-3727/43/9/095402
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Indexed BySCI
Language英语
WOS IDWOS:000274664600013
WOS KeywordSOLID-LIQUID INTERFACE ; ND-YAG LASER ; RAPID SOLIDIFICATION ; TOOL STEEL ; CAST-IRON ; CORROSION BEHAVIOR ; NANOCRYSTALLINE CU ; STRUCTURAL MODEL ; WEAR-RESISTANCE ; MICROSTRUCTURE
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
Funding OrganizationJilin University ; National Natural Science Fund of China [50635030] ; Science and Development Foundation of Jilin [20060196]
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43533
Collection非线性力学国家重点实验室
Corresponding AuthorWang CT
Recommended Citation
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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