Results 71 to 80 of about 354 (112)

Quantification of the temperature threshold of hydrogen embrittlement in X90 pipeline steel

Materials Science and Engineering: A, 2021
Abstract In the current research, the dependence of hydrogen embrittlement (HE) on the temperature in X90 steel is studied through experimental tests and molecular dynamics simulations. Slow strain rate tests (SSRT) were applied to X90 specimens in the air and the simulated groundwater solution (called NS4), respectively. The fracture morphologies of
Xiao Xing, Ran Cheng, Gan Cui, Jianguo Liu, Jinxin Gou, Chao Yang, Zili Li, Feng Yang   +7 more
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Process, Microstructure and Mechanical Properties of X90 Pipeline Steel

Materials Science Forum, 2016
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.
Bin Guo, Jin Qiao Xu, Lei Cui, Qing Feng Wang   +3 more
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PROPERTIES AND MICROSTRUCTURE OF THIRD GENERATION X90 PIPELINE STEEL

Acta Metallurgica Sinica, 2013
The mechanical properties and microstructure of the TG (third generation) X90 pipeline steels which have been industrially trial-produced were investigated. The results showed that the microstructure of the 18.4 mm thick X90 pipeline steels consist of quasi-polygonal ferrite, lath bainite and M/A (martenite/austenite) island.
Dianxiu XIA, Xuelin WANG, Xiucheng LI, Yang YOU, Chenjia SHAN   +4 more
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Simulated HAZ Continuous Cooling Transformation of X90 Pipeline Steel

Materials Science Forum, 2016
In 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, 2015
ZnO 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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Microstructure and Properties of Weld CGHAZ under Different Heat Input for X90 Pipeline Steel

Materials Science Forum, 2016
Two 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, Yong Li Sui, Pei Pei Xia, Hai Hong Zhao, Zhang Hua Yin   +4 more
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Effect of simulated welding thermal cycle on microstructure and mechanical properties of X90 pipeline steel

Materials Science and Engineering: A, 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, Wei Wang, Shaohui Chen, Jinbo Qu   +3 more
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Microstructure and Toughness of Weld CGHAZ Under Different Heat Input for X90 High Strength Pipeline Steel

Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, 2016
Two kinds of industry trial X90 pipeline steel which had different chemical composition were chosen as experimental materials, and the grain coarsening, microstructure evolution 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 ...
Liuqing Yang, Yongli Sui, PeiPei Xia, Die Yang, Yongqing Zhang   +4 more
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Relationship Between Microstructure and Mechanical Properties of X90 Pipeline Steel

2018
The relationship between microstructure and mechanical properties of X90 pipeline steel was investigated. The results showed that X90 pipeline steel consists of granular bainite and M/A island. The mechanical properties including tensile and impact properties are influenced by the polygonal ferrite.
Xiang Zhang, Fang Yang
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Development of Higher Ductility and Lower Strain Aging Sensitivity X90/X100 Pipeline Steel

2014
High 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, Xuelin Wang, Dianxiu Xia, Weihua Sun   +3 more
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