Results 41 to 50 of about 101 (57)
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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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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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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 ...
Defen Zhang, Xiaowen Chen, Dezhi Zeng
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Transactions of the Indian Institute of Metals, 2019
In this work, X90 pipeline steel was welded by shielded metal arc welding with root and submerged arc welding with calk and cap. After that, the joint was tempered at 550 °C and 600 °C. Subsequently, the microstructure and mechanical properties were investigated by optical microscope, scanning electron microscope (SEM) and Vickers hardness tester.
Defen Zhang +5 more
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In this work, X90 pipeline steel was welded by shielded metal arc welding with root and submerged arc welding with calk and cap. After that, the joint was tempered at 550 °C and 600 °C. Subsequently, the microstructure and mechanical properties were investigated by optical microscope, scanning electron microscope (SEM) and Vickers hardness tester.
Defen Zhang +5 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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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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Transactions of the Indian Institute of Metals, 2018
In this work, hybrid laser-arc welding process was applied to X90 pipeline steel which has wide potential applications in the future pipeline project. The effect of different laser power (1.0, 1.5 and 2.5 kW) on microstructure and mechanical properties of weld joints was investigated.
Mei Yang +7 more
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In this work, hybrid laser-arc welding process was applied to X90 pipeline steel which has wide potential applications in the future pipeline project. The effect of different laser power (1.0, 1.5 and 2.5 kW) on microstructure and mechanical properties of weld joints was investigated.
Mei Yang +7 more
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International Journal of Pressure Vessels and Piping, 2018
Abstract The X90 pipeline steels containing Nb and Ti elements have been produced by special critical-tempering rolling process (CTRP) and conventional thermomechanical controlled process (TMCP) respectively. Microstructure was investigated with field emission scanning electron microscopy (FESEM) and field emission transmission electron microscopy ...
J.M. Zhang, C.Y. Huo, Q.R. Ma, Y.R. Feng
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Abstract The X90 pipeline steels containing Nb and Ti elements have been produced by special critical-tempering rolling process (CTRP) and conventional thermomechanical controlled process (TMCP) respectively. Microstructure was investigated with field emission scanning electron microscopy (FESEM) and field emission transmission electron microscopy ...
J.M. Zhang, C.Y. Huo, Q.R. Ma, Y.R. Feng
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Volume 3: Materials and Joining; Risk and Reliability, 2014
Along with the increasing demand of oil and natural gas by various world economies, the operating pressure of the pipeline is also increasing. Large diameter heavy wall X80 pipeline steel is widely used in the long distance high pressure oil and gas transportation in China today.
Guodong Zhang +4 more
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Along with the increasing demand of oil and natural gas by various world economies, the operating pressure of the pipeline is also increasing. Large diameter heavy wall X80 pipeline steel is widely used in the long distance high pressure oil and gas transportation in China today.
Guodong Zhang +4 more
openaire +1 more source