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Effect of Slab Quality on the Microstructure and Performance of Q345C Hot Rolling Strip Used for Pipe Pile Foundation

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Abstract:

The Effect of slab quality on the microstructure and performance of Q345C hot rolling strip for pipe pile foundation were studied by SEM, EBSD, mechanical test and corrosion test. The results showed that the dendrite size of the slab had a great impact on the grain size of the steel. The fine grain structure can significantly improve the mechanical properties of the steel, but to some extent, reduce its corrosion resistance. In the early and later stage of the corrosion reaction, the coarse grain structure can improve the corrosion resistance. However, in the middle stage of the corrosion reaction, the grain size had no significant effect on the corrosion resistance. The rust layer included the inner layer and the outer layer, in which the inner layer was relatively compact, and they were mainly composed of the oxide of iron.

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Periodical:

Applied Mechanics and Materials (Volumes 204-208)

Pages:

1210-1214

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.204-208.1210

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Online since:

October 2012

Authors:

Hai He Luo, De Hui Zou, Zhi Fen Wang, Han Xiong Dong, Zhong Bo Dong

Keywords:

Corrosion Resistance, Mechanical Property, Microstructure, Q345C, Slab Quality

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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