Controlled Rolling of X80 Pipeline Steel in the Austenite Recrystallization Temperature Region and Its Effect on the Microstructure and Mechanical properties

2021 ◽  
pp. 2100331
Author(s):  
Xiaoguang Zhou ◽  
Hua Li ◽  
Qiyuan Chen ◽  
Zhenyu Liu
Keyword(s):  
Mechanical Properties ◽  
Temperature Region ◽  
Pipeline Steel ◽  
Controlled Rolling ◽  
Recrystallization Temperature ◽  
X80 Pipeline Steel ◽  
Microstructure And Mechanical Properties ◽  
Austenite Recrystallization

scholarly journals Effects of Cooling Paths on Through-Thickness Microstructure and Mechanical Properties of Heavy Gauge X80 Pipeline Steel

2017 ◽  
Vol 30 (5) ◽  
pp. 483-492
Author(s):  
Xu-Dong Li ◽  
Cheng-Ning Li ◽  
Guo Yuan ◽  
Guo-Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Pipeline Steel ◽  
X80 Pipeline Steel ◽  
Microstructure And Mechanical Properties

scholarly journals Effect of controlled rolling/controlled cooling parameters on microstructure and mechanical properties of the novel pipeline steel

2014 ◽  
Vol 2 (3) ◽  
pp. 265-274 ◽  
Author(s):  
Min Jiang ◽  
Li-Na Chen ◽  
Jin He ◽  
Guang-Yao Chen ◽  
Chong-He Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Pipeline Steel ◽  
Controlled Rolling ◽  
The Novel ◽  
Controlled Cooling ◽  
Microstructure And Mechanical Properties

scholarly journals Effect of heat treatment on the microstructure and mechanical properties of a low-carbon X80 pipeline steel

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
B.C. Acosta-Cinciri ◽  
N.M. López-Granados ◽  
J.A. Ramos-Banderas ◽  
C.A. Hernández-Bocanegra ◽  
P. Garnica-González ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Pipeline Steel ◽  
American Petroleum Institute ◽  
The Other ◽  
Low Carbon ◽  
Electron Backscattered Diffraction ◽  
X80 Pipeline Steel ◽  
Microstructure And Mechanical Properties ◽  
Treatment Conditions

Abstract In this work, the effect of heat treatment conditions on the microstructure and mechanical properties of an American Petroleum Institute (API) X80 steel with a low carbon content of ~0.02% wt., destined for the manufacture of pipelines and pipeline transmission systems by welding, was investigated. Samples were heat treated under different conditions and then were characterized by scanning electron microscopy (SEM), orientation image microscopy (OIM), and electron backscattered diffraction (EBSD). The results showed that when the steel is fastly cooled from the austenitic field (990°C), the mechanical properties increase significantly [ultimate tensile strength (UTS) >1,100 MPa, yield strength (YS) 900 MPa, and elongation 27%] due to the high percentage of martensite (M) present in the microstructure (95%). In contrast, when the cooling rate decreases and the treatment conditions remain at/or above the bainitic/martensitic transformation (from 990°C to 600°C and 450°C), the mechanical properties are decreased by almost 50% because of the decrease in the percentage of martensite (18%). However, the percentage of elongation increases significantly (38%) due to the presence of other micro-constituents resulting from the phase transformation. On the other hand, the best combination of mechanical properties (UTS above 800 MPa and YS between 610 MPa and 720 MPa) was obtained when the steel acquired a dual-phase microstructure [(martensite/austenite)-(ferrite/martensite)] since the amount of martensite is conserved between 45% and 82%, in combination with the other micro-constituent present in the steel that allows us to achieve elongation percentages close to 30%.

Effect of Ti-enriched Carbonitride on Microstructure and Mechanical Properties of X80 Pipeline Steel

2010 ◽  
Vol 26 (9) ◽  
pp. 803-809 ◽  
Author(s):  
Wei Deng ◽  
Xiuhua Gao ◽  
Dewen Zhao ◽  
Linxiu Du ◽  
Di Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Pipeline Steel ◽  
X80 Pipeline Steel ◽  
Microstructure And Mechanical Properties

Microstructure and Mechanical Properties of X80 Pipeline Steel Backing Welded Joint by Fiber Laser-MAG Hybrid Welding

2013 ◽  
Vol 40 (4) ◽  
pp. 0403002
Author(s):  
雷正龙 Lei Zhenglong ◽  
檀财旺 Tan Caiwang ◽  
陈彦宾 Chen Yanbin ◽  
刘德健 Liu Dejian ◽  
胡席远 Hu Xiyuan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fiber Laser ◽  
Welded Joint ◽  
Pipeline Steel ◽  
Hybrid Welding ◽  
X80 Pipeline Steel ◽  
Microstructure And Mechanical Properties
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