Study on Mechanical Properties Anisotropy of X80 Pipeline Steel

Qiang Duan; Jun Yan; Guo Hui Zhu; Qing Wu Cai

doi:10.4028/www.scientific.net/AMR.803.413

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 803Study on Mechanical Properties Anisotropy of X80...

Study on Mechanical Properties Anisotropy of X80 Pipeline Steel

Abstract:

The microstructure of X80 pipeline steel in different directions were observed by SEM technique and its effective grain size and misorientation were statistically analyzed by EBSD system. Based on these results, the mechanical properties at 0°, 45° and 90° to the rolling direction of X80 pipeline steel were studied. The results show that, owing to finer grain size and less low-angle grain boundaries, strengths and impact toughness of X80 pipeline steel at 90° direction are optimal. While the pipeline steel possesses finer grain size, more high-angle grain boundaries and less low-angle grain boundaries, the crack propagation is effectively suppressed, then its impact toughness is improved.

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Periodical:

Advanced Materials Research (Volume 803)

Pages:

413-418

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.803.413

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Online since:

September 2013

Authors:

Qiang Duan, Jun Yan, Guo Hui Zhu, Qing Wu Cai

Keywords:

Anisotropy, Grain Size, Misorientation, Pipeline Steel

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