Results 31 to 40 of about 81 (55)
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Simulated HAZ Continuous Cooling Transformation of X90 Pipeline Steel
Materials Science Forum, 2016In this paper, the simulation heat affected zone (HAZ) continuous cooling transformation (SHCCT) curve of X90 pipeline steel was drew by using Gleeble 3500 simulator. The results show that the trend of hardening of the weld HAZ of X90 pipeline steel was moderate, and softening tendency was not significant. When cooling rate was between 1°C/s and 10°C/s,
Yu Liu, Ai Qing Ma, Bin Feng
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Process, Microstructure and Mechanical Properties of X90 Pipeline Steel
Materials Science Forum, 2016This 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.
Qing Feng Wang
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Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2011
Abstract The effect of welding thermal cycle simulation on the microstructure and mechanical properties of X90 pipeline steel was investigated by means of microstructure analysis, tensile- and Charpy impact-tests. At the heat input of 15 kJ/cm, the microstructure of coarse-grained heat affected zone is mainly composed of lath bainite and granular ...
Wengui Zhao +3 more
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Abstract The effect of welding thermal cycle simulation on the microstructure and mechanical properties of X90 pipeline steel was investigated by means of microstructure analysis, tensile- and Charpy impact-tests. At the heat input of 15 kJ/cm, the microstructure of coarse-grained heat affected zone is mainly composed of lath bainite and granular ...
Wengui Zhao +3 more
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Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2018
Abstract In the present study, the simulated coarse-grained heat-affected zones (CGHAZs) of X90 pipeline steel were produced using a Gleeble 3500 simulator under different heat inputs (HIs) varying from 10 to 50 kJ/cm to study the effect of HI on grain boundary evolution and toughness properties in CGHAZ of X90 pipeline steel.
Peishan Zhou +4 more
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Abstract In the present study, the simulated coarse-grained heat-affected zones (CGHAZs) of X90 pipeline steel were produced using a Gleeble 3500 simulator under different heat inputs (HIs) varying from 10 to 50 kJ/cm to study the effect of HI on grain boundary evolution and toughness properties in CGHAZ of X90 pipeline steel.
Peishan Zhou +4 more
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Microstructure and Properties of Weld CGHAZ under Different Heat Input for X90 Pipeline Steel
Materials Science Forum, 2016Two kinds of industry trial X90 pipeline steels which have different chemical composition were chosen as test objects, and the grain coarsening, microstructural characteristics and the variation rules of low-temperature impact toughness in weld CGHAZ of this two steel under different welding heat input were studied by physical thermal simulation ...
Liu Qing Yang +4 more
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Effect of post-weld heat treatment on corrosion resistance of X90 pipeline steel joints
International Journal of Materials ResearchAbstract In order to improve the corrosion resistance of welded joints, X90 pipeline steel joints were subjected to post-weld heat treatment at 610 °C, 640 °C, and 670 °C (holding time was 1 h). Through electrochemical corrosion and full immersion corrosion experiments, the corrosion resistance of welded joints under various conditions ...
Xiaowen Chen, De-Fen Zhang
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Development of Higher Ductility and Lower Strain Aging Sensitivity X90/X100 Pipeline Steel
2014High grade pipeline steel which is based on multi-phase microstructure concept has excellent mechanical properties, such as large uniform elongation, low yield ratio and low strain aging sensitivity. The results of industrial trial show that the multi-phase X90/X100 pipeline plate steels and longitudinal submerge arc welded linepipe have excellent ...
Chengjia Shang +2 more
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Journal of Pipeline Systems Engineering and Practice, 2018
AbstractIn this paper, true stress–strain curves of two natural gas pipeline steels, API-5L X65 and X90, were studied using the three-dimensional digital image correlation (3D-DIC) technique.
Lingzhen Kong
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AbstractIn this paper, true stress–strain curves of two natural gas pipeline steels, API-5L X65 and X90, were studied using the three-dimensional digital image correlation (3D-DIC) technique.
Lingzhen Kong
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Failure Analysis of X90 Pipeline Steel under Microbial Corrosion Environment
Journal of Failure Analysis and Prevention, 2022Yarong Zhang +3 more
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Preparation of a biomimetic superhydrophobic ZnO coating on an X90 pipeline steel surface
New Journal of Chemistry, 2015ZnO coating with upright micro–nano structures was fabricated via electrodeposition and hydrothermal treatment. After it was modified by fluorination, the ZnO coating presented superhydrophobicity with the water CA of 157.59° and the SA was less than 10°.
Li Hao, Yu Sirong, Han Xiangxiang
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