3D cohesive modelling of hydrogen embrittlement in the heat affected zone of an X70 pipeline steel – Part II

2014 ◽  
Vol 39 (7) ◽  
pp. 3528-3541 ◽  
Author(s):  
Antonio Alvaro ◽  
Vigdis Olden ◽  
Odd Magne Akselsen
Keyword(s):  
Hydrogen Embrittlement ◽  
Heat Affected Zone ◽  
Pipeline Steel ◽  
Steel Part ◽  
X70 Pipeline Steel

Hydrogen embrittlement susceptibility of X70 pipeline steel weld under a low partial hydrogen environment

2020 ◽  
Vol 45 (43) ◽  
pp. 23739-23753 ◽  
Author(s):  
Thanh Tuan Nguyen ◽  
Naehyung Tak ◽  
Jaeyeong Park ◽  
Seung Hoon Nahm ◽  
Un Bong Beak
Keyword(s):  
Hydrogen Embrittlement ◽  
Pipeline Steel ◽  
Steel Weld ◽  
X70 Pipeline Steel ◽  
Hydrogen Environment

scholarly journals Role of Microstructure in Susceptibility of X70 Pipeline Steel to Hydrogen Embrittlement

2010 ◽  
Vol 654-656 ◽  
pp. 162-165 ◽  
Author(s):  
D. Hejazi ◽  
A.J. Haq ◽  
N. Yazdipour ◽  
D.P. Dunne ◽  
Frank J. Barbaro ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Fracture Surface ◽  
Heat Affected Zone ◽  
Pipeline Steel ◽  
Rolled Strip ◽  
Bend Tests ◽  
Point Bend ◽  
Hot Rolled ◽  
Surface Observations

In order to investigate the susceptibility of steels to hydrogen embrittlement as a function of their microstructure X70 steel was chosen in different conditions: normalized transfer bar, as-received hot rolled strip and heat affected zone (HAZ). Notched and fatigue pre-cracked samples were subjected to electrochemical hydrogen charging to achieve 2 ppm hydrogen content. Three point bend tests were conducted on as-received and hydrogen charged samples. The results showed that HAZ samples are more susceptible to hydrogen embrittlement than the others. This was supported by fracture surface observations.

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