焊接氢致裂纹是金属氢损伤在焊接中的一种表征。

Welding hydrogen induced crack (HIC) is a kind of hydrogen damage of metal during welding of high strength low alloy steel.

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在役焊接过程中，管内流动介质的快速冷却，易使接头出现氢致裂纹。

Because of the fast cooling of flowing medium, the hydrogen cracking occurs easily under in-service welding.

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