Process, Microstructure and Mechanical Properties of X90 Pipeline Steel

Bin Guo; Jin Qiao Xu; Lei Cui; Qing Feng Wang

doi:10.4028/www.scientific.net/MSF.850.894

Paper Titles

Numerical and Experimental Study of Temperature Rise Effect on Copper during Equal Channel Angular Pressing
p.864

Toughness of X80 Grade Pipe Steel Girth Welds by Curved Wide Plate Testing
p.873

Engineering Critical Assessment for the Flaws in the Pipeline Steel Girth Weld
p.881

Stress Analysis for the Tie-in Girth Weld of X90 Pipeline
p.889

Process, Microstructure and Mechanical Properties of X90 Pipeline Steel
p.894

Constraint Effect on the Ductile Fracture Behavior of High-Strength Pipeline Steels
p.899

Simulated HAZ Continuous Cooling Transformation of X90 Pipeline Steel
p.905

Bending and Tempering Process of L415M Hot Induction Bend Used in Low Temperatures Areas
p.910

Continuous Cooling Phase Transformation Rules of High Nb X80 Pipeline Steel
p.916

HomeMaterials Science ForumMaterials Science Forum Vol. 850Process, Microstructure and Mechanical Properties...

Process, Microstructure and Mechanical Properties of X90 Pipeline Steel

Abstract:

This paper provided a detailed description of X90 pipeline steel developed in Wuhan Iron and Steel Corporation (WISCO), including its metallurgical design, manufacturing process, structural characteristics and mechanical properties. Some key issues such as the cooling rate and rolling parameters were addressed for the development of X90 pipeline steel. The experimental results showed that the manufacturing process of controlled rolling (for austenite refining) + relaxation (for ferrite phase transformation) +ultrafast accelerated cooling could guarantee very fine microstructure and excellent mechanical properties. The X90 pipeline steel developed in WISCO has a good match of high strength and excellent toughness. Mechanical properties of X90 coils, plates and corresponding SSAW and LSAW pipes comprehensively meet the technical requirements of China National Petroleum Corporation (CNPC).

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Periodical:

Materials Science Forum (Volume 850)

Pages:

894-898

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.850.894

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Online since:

March 2016

Authors:

Bin Guo, Jin Qiao Xu, Lei Cui, Qing Feng Wang

Keywords:

Pipeline Steel, TMCP, WISCO, X90

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