Inhibitory effect of oxygen on hydrogen‐induced fracture of A333 pipe steel

Inhibitory effect of oxygen on hydrogen‐induced fracture of A333 pipe steel
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氧对A333管钢氢致断裂的抑制作用

DOI:
10.1111/ffe.12994
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发表时间:
2019
影响因子:
3.7
通讯作者:
Furtado Jader
Furtado Jader
中科院分区:
材料科学2区
文献类型:
--
作者:
Komoda Ryosuke;Kubota Masanobu;Staykov Aleksandar;Ginet Patrick;Barbier Francoise;Furtado Jader

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通过对A333管线钢在氢气中断裂韧性的试验,研究了氢气环境中氧作为杂质对A333管线钢氢环境脆化的影响。氢气中的氧含量为100、10和0.1vppm。在氢和0.1-vppm氧中观察到J-Δ曲线显著降低。在一定的负荷条件下,100 vppm的氧可完全抑制氢的脆化作用。在氢与10-vppm氧的情况下,最初氢的脆化作用被完全抑制,然后出现。确认了I-vppm的氧降低了氢的脆化作用。这一结果可以用Somerday等人提出的HEE预测模型来解释。
The effect of oxygen contained in hydrogen gas environment as an impurity on hydrogen environment embrittlement (HEE) of A333 pipe steel was studied through the fracture toughness tests in hydrogen gases. The oxygen contents in the hydrogen gases were 100, 10, and 0.1 vppm. A significant reduction in theJ‐Δacurve was observed in the hydrogen with 0.1‐vppm oxygen. Under given loading conditions, the embrittling effect of hydrogen was completely inhibited by 100 vppm of oxygen. In the case of the hydrogen with 10‐vppm oxygen, initially the embrittling effect of hydrogen was fully inhibited, and then subsequently appeared. It was confirmed that 1‐vppm oxygen reduced the embrittling effect of hydrogen. The results can be explained by the predictive model of HEE proposed by Somerday et al.
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