Results 181 to 190 of about 2,359 (228)

Constitutive relationship of hot deformation of X80 pipeline steel

2010 International Conference on Mechanic Automation and Control Engineering, 2010
In order to realize numerical simulation of hot rolling and establish the hot deformation process parameters for X80 pipeline steel, the flow stress behavior of X80 pipeline steel during hot deformation was investigated in the temperature range of 900–1100°C and strain rate of 0.01–1s−1 on Gleeble-3500 thermo-simulation machine.
null Ma Bo, null Peng Yan, null Liu Yun-fei, null Jia Bin   +3 more
openaire   +1 more source

Passivation process of X80 pipeline steel in bicarbonate solutions

International Journal of Minerals, Metallurgy, and Materials, 2011
The passivation process of X80 pipeline steel in bicarbonate solutions was investigated using potentiodynamic, dynamic electrochemical impedance spectroscopy (DEIS), and Mott-Schottky measurements. The results show that the shape of polarization curves changes with HCO 3 − concentration. The critical
Jian-long Zhou, Xiao-gang Li, Cui-wei Du, Ying Pan, Tao Li, Qian Liu   +5 more
openaire   +1 more source

Microstructure characteristics and mechanical properties of X80 pipeline steels

Journal of Wuhan University of Technology-Mater. Sci. Ed., 2012
The relation between microstructure characteristics and mechanical properties of X80 pipeline steels was investigated using optical microscopy, scanning electron microscopy, etc. It is shown that the structure consists of polygonal ferrite (PF), quasi-polygonal ferrite (QPF), acicular ferrite (AF), and granular bainitic ferrite (GF).
Min Zhou, Linxiu Du, Yanfeng Zhao, Xianghua Liu   +3 more
openaire   +1 more source

Study on Mechanical Properties Anisotropy of X80 Pipeline Steel

Advanced Materials Research, 2013
The microstructure of X80 pipeline steel in different directions were observed by SEM technique and its effective grain size and misorientation were statistically analyzed by EBSD system. Based on these results, the mechanical properties at 0°, 45° and 90° to the rolling direction of X80 pipeline steel were studied.
Qiang Duan, Jun Yan, Guo Hui Zhu, Qing Wu Cai   +3 more
openaire   +1 more source

Control of Element and Inclusion for X80 Pipeline Steel

Advanced Materials Research, 2013
According to the present situation of production X80 pipeline steel, the performance requirements of X80 pipeline steel, and the effect and control technology of various elements in steel, and the size and shape control technology of inclusions are reviewed.
Qi Chun Peng, Lei Qiu, Jian Zou, Zhi Bo Tong   +3 more
openaire   +1 more source

Electrochemical behaviour of X80 pipeline steel with alumina coating

Surface Engineering, 2015
X80 pipeline steel was firstly aluminised at a relative low temperature then treated by a microarc oxidation process. Electrochemical behaviour of X80 pipeline steel before and after the combined treatment was evaluated by electrochemical tests in different solution. Results show that ceramics coating composed of α-Al2O3 and γ-Al2O3 can be obtained on
M. Huang, M-X. Zhang, Y. Wang, P. Zhang, A-J. Xu   +4 more
openaire   +1 more source

Study on Microstructure and Properties of X80 Pipeline Steel

Advanced Materials Research, 2014
Experimental methods, such as OM, SEM and X-EDS, were used to study the microstructure of X80 pipeline steel. It mainly consists of fine acicular ferrite (AF). X80 pipeline steel possesses high strength and impact energy at-30°C approaches to 400J.
Xiang Dong Huo, Feng Dong, Lie Jun Li
openaire   +1 more source

Effect of Pseudomonas sp. on simulated tidal corrosion of X80 pipeline steel

Bioelectrochemistry, 2023
Microbiologically influenced corrosion of pipeline steel in seawater has long been concerned by scholars all over the world, but there were few reports on the microorganism effect on marine tidal corrosion of steels. In this work, the effect of Pseudomonas sp. on static tidal corrosion of X80 pipeline steel were systematically studied using weight-loss,
Xiaobao, Zhou, Hui, Su, Qin, Wang, Zhen, Zhong, Zhi, Li, Tangqing, Wu   +5 more
openaire   +2 more sources

Development mechanism of internal local corrosion of X80 pipeline steel

Journal of Materials Science & Technology, 2020
Abstract The occurrence and development mechanism of internal local corrosion has always been a controversial topic, and especially under flow conditions. In this paper, an improved high shear force loop was experimentally used, and local flow field is induced by simulating corrosion defects on the surface of X80 pipeline steel specimens.
Zhuowei Tan, Liuyang Yang, Dalei Zhang, Zhenbo Wang, Frank Cheng, Mingyang Zhang, Youhai Jin   +6 more
openaire   +1 more source

Corrosion inhibition of deposit-covered X80 pipeline steel in seawater containing Pseudomonas stutzeri

Bioelectrochemistry, 2022
Under-deposit corrosion, a typical corrosion type, is a major threat to the safe running of pipeline steel in marine environment. Under-deposit corrosion behaviour and mechanism still require further investigation, especially when there is participation of microorganisms.
Haixian, Liu, Zhengyu, Jin, Zhi, Wang, Hongfang, Liu, Guozhe, Meng, Hongwei, Liu   +5 more
openaire   +2 more sources