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Study on the Structure and Properties of Surface Nanocrystallized Zr-4

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Abstract:

A nanostructured surface layer was obtained on the surface of Zr-4 by surface mechanical attrition treatment(SMAT). The structure and the properties of the SMAT sample were analyzed by means of the optical microscope, hardness and polarization curve testing. The results show that， when processing time for 5min, the average grain sizes on the surface layer can be refined to 23nm. The average grain size by SMAT-ed for 15min is 20nm, which is the smallest. The microhardness have a significant increase, the surface roughness also increase, and the corrosion resistance reduce in 1mol H2SO4 solution.

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Advanced Materials, ICAMMP 2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 415-417)

Pages:

660-665

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.415-417.660

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Online since:

December 2011

Authors:

Cong Hui Zhang, Da Li Liu, Xin Zhe Lan, Xi Cheng Zhao

Keywords:

Corrosion Resistance, Hardness, Microstructure, Surface Nanocrystallization, Zirconium-4

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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