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Study on Carbonitride Precipitating Process in Nb-V Micro-Alloyed Steel

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Abstract:

The carbonitrides precipitates in Nb-V micro-alloyed steels were investigated by 3DAP. Much difference in the composition and size of the precipitates were observed. It is proposed that the carbon atoms segregated first at the dislocation or vacancy, and the vanadium and niobium atoms diffused to these sites to form the V-C, V-Nb-C clusters, leading to the formation of (Nb,V)C complex phase. The composition becomes inhomogeneity as the precipitates grow up.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

114-117

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.114

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Online since:

June 2010

Authors:

Wen Qing Liu, Xiao Yong Zhu, Xiao Jiao Wang, Xiang Yuan Xiong

Keywords:

Carbonitride, Microalloyed Steel, Precipitation, Three-Dimensional Atom Probe (3DAP)

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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