Results 21 to 30 of about 1,080 (202)

Texture Dependent Mechanical Anisotropy of X80 Pipeline Steel

Advanced Engineering Materials, 2010
AbstractPipeline steel grades API X80 are used for oil and gas transport. The most important mechanical properties of these steel grades are strength and fracture toughness. A remarkable directional anisotropy of toughness and strength were often observed in the plates.
N. Sanchez Mouriño, R. Petrov, J.‐ho Bae, K. Kim, L. A. I. Kestens   +4 more
openaire   +2 more sources

Determination of low temperature toughness index of X80 unequaldiameter tee in stations of China-Russia Eastern Gas Pipeline

You-qi chuyun, 2020
To address the fracture control problem of X80 unequal-diameter tee used in China-Russia Eastern Gas Pipeline under low temperature environment (－45 ℃), the finite element model for X80 unequal-diameter tee with defects was built taking into ...
Zeguang YOU, Wenwei ZHANG, Cheng WANG, Weiqing FU   +3 more
doaj   +2 more sources

Effect of Nb Content and Second Heat Cycle Peak Temperatures on Toughness of X80 Pipeline Steel. [PDF]

Materials (Basel), 2023
The microstructure evolution and variation of impact toughness in the heat-affected zone (HAZ) of X80 pipeline steel with different Nb content under different peak temperatures in the secondary thermal cycle were studied through welding thermal ...
Chen Y, Yang Y, He X, Chi Q, Qi L, Li W, Li X.   +6 more
europepmc   +2 more sources

Simulation analysis of X80 pipeline steel welding

Metalurgija, 2023
In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding. The peak temperature of different passes was compared, and the change trend of temperature field in the welding ...
Li, M. M., Ji, H. C., Lin, Q. S., Wu, C. D., Cai, S.   +4 more
openaire   +4 more sources

STUDY OF DYNAMIC FRACTURE OF X80 NATURAL GAS PIPELINE

Jixie qiangdu, 2018
A finite element model of the dynamic fracture in a full size gas pipeline is established based on the cohesive zone model. The dynamic crack growth of X80 pipeline steel was simulated using this model and the quantitative relationship between the crack growth rate and the internal pressure predicted is in agreement with the existing semi-empirical ...
LV JinJie, ZHAO JunHua, YU PeiShi
openaire   +3 more sources

Mechanical Properties of High-Nb X80 Steel Weld Pipes for the Second West-to-East Gas Transmission Pipeline Project

Advances in Materials Science and Engineering, 2017
The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline. In order to reduce the cost of the steel pipe, the high-Nb X80 pipeline steels with the different alloying systems have been ...
Gui-ying Qiao, Xiao-wei Chen, Zhi-en Zhang, Xiu-lin Han, Xu Wang, Bo Liao, Fu-ren Xiao   +6 more
doaj   +2 more sources

Investigating the mechanism of X80 pipeline failure under landslide impact [PDF]

Vibroengineering Procedia
As energy demand continues to grow and environmental issues become more severe, the development and utilization of clean energy natural gas are becoming increasingly important. This paper focuses on the impact mechanism of landslide disasters on pipelines, analyzing how landslide displacement, width, pipeline wall thickness, and internal pressure ...
Pengcheng Pei, Shuai Huang, Yang Zhou, Qingyun Xu, Biao Zhou, Yubing Gao, Haixia Zhao, Jingwei Liu, Xinyue Zhang   +8 more
openaire   +2 more sources

Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld. [PDF]

Materials (Basel), 2022
As an important component of strain-based design, the tensile strain capacity (TSC) concept has been extensively used for pipelines that experience expectable plastic strain for both installation and service. However, some stress-based designed pipelines
Chen H, Dai L, Xuan H, Gao X, Yang K, Wang L, Chi Q, Huo C.   +7 more
europepmc   +2 more sources

Influence of riboflavin on the corrosion of X80 pipeline steel by Sulfate reducing bacteria

Materials Research Express, 2023
The sulfate reducing bacteria(SRB) is commonly attached to the surface of buried pipeline steel, and the electron shuttle in the corrosion medium can promote the release of electrons from iron oxidation through the bacterial cell wall into the cytoplasm ...
Lei Fu, Ke Jian, Li Lin, Zhengguo Wang, Hang Yang, Yunrong Luo, Shisen Yan, Daqian Zhu   +7 more
doaj   +2 more sources

Modeling the Crack Interference in X80 Oil and Gas Pipeline Weld

Materials, 2023
Based on the numerical simulation method of the virtual crack closure technique (VCCT), an interference model was established to investigate the physical problem of two interacting cracks of different sizes in the welding zone of oil and gas pipelines.
Wei Cui, Zhongmin Xiao, Qiang Zhang, Jie Yang, Ziming Feng   +4 more
openaire   +4 more sources