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| The influence of microstructure on hydrogen induced cracks susceptibility and hydrogen trapping efficiency for X80 pipeline steel |
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Cite this article:
. The influence of microstructure on hydrogen induced cracks susceptibility and hydrogen trapping efficiency for X80 pipeline steel. Chin J Mater Res, 2010, 24(5): 508-512.
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Abstract Abstract: The X80 pipeline steel based on acicular ferrite was used in this article. Different heat treatment was done on X80 pipeline steel to got different microstructure such as poly ferrite and lath martensite . The HIC behavior of different microstructure of X80 steel was investigated by the hydrogen-induced cracking (HIC) susceptibility test and hydrogen permeation in H2S environment. The result indicates that the HIC susceptibility of different microstructure X80 steel is in the order of: water-quenching> air-cooling>original. Hydrogen trapping efficiency of steel is one of the main factors of HIC sensitive. The more the value of hydrogen flux J∞, hydrogen diffusion coefficient Doff, the fewer pipelines steel is prone to HIC.
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Received: 09 June 2010
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| Fund: National Natural Science Foundation of China |
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