Volume 4, Issue 1 (Journal OF Welding Science and Technology of Iran 2018)                   2018, 4(1): 29-41 | Back to browse issues page

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Talebi Hanzaei A, Marashi P, Ranjbarnodeh E, Hamdollahzadeh A. The Effect of Hydrogen Content and Welding Conditions on the Hydrogen Induced Cracking of the API X70 Steel Weld. Journal title 2018; 4 (1) :29-41
URL: http://jwsti.iut.ac.ir/article-1-213-en.html
The Effect of Hydrogen Content and Welding Conditions on the Hydrogen Induced Cracking of the API X70 Steel Weld
A. Talebi Hanzaei, P. Marashi, E. Ranjbarnodeh, A. Hamdollahzadeh
Abstract:   (4933 Views)
In this study, first,diffusible hydrogen of cellulosic electrode E8010-P1 and low hydrogen electrode E8018-G was measured by mercury displacement method according to ISO3690. Then,the effect of preheating and post-heating on the sensitivity to hydrogen inducedcold cracking in welding of 18mm API5L X70 steel with these electrodes was investigated according to ISO17642-2. The results of visual inspection, penetrant test,metallographic examination, and hardness test showed that welding with cellulosic electrode leads to cracking unless both preheating and post-heating are applied.While in the case of low hydrogen electrode, cracking occurs only if no preheating or post-heating is applied.
 
Keywords: Hydrogen Inducedcold Cracking, Preheating, Post-heating, Diffusible Hydrogen, API X70 Steel.
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Type of Study: Research | Subject: Special
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