氢致裂纹是指金属材料处在含氢的介质中(如硫化氢的水溶液)，在电化学腐蚀过程中析出的氢进入金属材料内部而产生阶梯型裂纹,这些裂纹的生长发育最终使金属材料(如管道钢)发生开裂。
...国产X70管线钢及其焊缝的氢致裂纹 Hydrogen-induced crack of domestic X70 pipeline steels-作者：李云涛,杜则裕,陶勇寅,熊林玉, , 熊林玉, 期刊- 核心期刊 ISSN : 0253-360X(2004)05-10...
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高湿度能增大氢致裂纹和应力腐蚀开裂倾向。
High environment humidity increases the susceptibility to hydrogen induced cracking and stress corrosion cracking.
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.
对于天然气输送管道，需研制抗氢致裂纹的专用管线钢管；
For the natural gas transmission pipeline, the special steel pipe that can resist hydrogen cracking should be developed.
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