Effect of Hot Rolling Parameters on Texture and Anisotropy of X65MO offshore pipeline steel

DOI

10.2991/icmea-17.2018.69How to use a DOI?

Keywords

X65MO; offshore pipeline steel; texture; anisotropy; hot rolling parameters

Abstract

In this study, optical microscope (OM), tensile test, X-ray diffraction(XRD) method were used to investigate the effect of hot rolling parameters on texture and tensile properties of X65MO offshore pipeline steel. Result of microstructure observation reveals that the anisotropy of mechanical properties of X65MO submarine pipeline steel is not due to the different growing direction of grains, but to the different crystal orientations - texture. And the texture mainly consists of near {112}<110>, {111}<112> and {001}<110> for hot rolled X65MO offshore pipeline steel, which depends on the texture of austenite and its revolution during phase transformation process. Increasing the finishing rolling temperature can reduce the density of {112}<110> texture dramatically and correspondingly reduce the anisotropy, while higher deformation will increase {112}<110> component and intensify the anisotropy of strength. Reason analysis suggests that the key point is to reduce the copper texture and increase the others instead. Optimized finishing rolling temperature and transfer bar thickness were recom-mended based on the investigation.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Tao Niu
AU  - Chenggang An
AU  - Xin-lang Wu
AU  - Caixia Zhang
AU  - Chen Yu
PY  - 2018/02
DA  - 2018/02
TI  - Effect of Hot Rolling Parameters on Texture and Anisotropy of X65MO offshore pipeline steel
BT  - Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)
PB  - Atlantis Press
SP  - 303
EP  - 308
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmea-17.2018.69
DO  - 10.2991/icmea-17.2018.69
ID  - Niu2018/02
ER  -